Dust removal structure and plate cutting device

Abstract

The utility model discloses a dust removal structure and a plate cutting device, the dust removal structure comprises a coaming assembly, a cutter shaft, a blade and a dust removal assembly, the coaming assembly comprises a top plate and a side plate; the top plate and the side plates jointly limit an internal space; the cutter shaft is arranged in the internal space; the blade is assembled on the cutter shaft; the dust removal assembly comprises a top dust removal opening, a side dust removal opening and a dust suction pipe, the top dust removal opening is formed in the top plate, the side dust removal opening is formed in the side plate, and the dust suction pipe communicates with the top dust removal opening and the side dust removal opening. The top dust removal opening, the side face dust removal opening and the dust suction pipe are arranged, the dust suction pipe is communicated with the top dust removal opening and the side face dust removal opening, and therefore chippings carried on the blade can enter the dust removal openings and be sucked away by the dust suction pipe connected with a negative pressure device no matter the chippings move towards the top plate or the side plate. Compared with the prior art, the dust collection effect is more thorough, meanwhile, power of the negative pressure device does not need to be increased, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing machinery, in particular to a dust removal structure and a plate cutting device. Background Art

[0002] In order to produce and process aluminum substrates, enterprises need to cut aluminum substrates into long strips of light and embed light beads in the long strips of light. In the prior art method, an automated cutting device is usually used to cut aluminum substrates. However, since the existing cutting device generates debris splashing during the cutting process of the substrate, the debris is drawn into the device and causes damage to the device, affecting the normal use of the cutting device and increasing the cost of subsequent operation and maintenance. Therefore, the cutting device in the prior art method has the problem of difficulty in recovering the cutting debris when cutting the plate.

[0003] A Chinese patent with publication number CN219901338U discloses a plate cutting device with a dust removal function. The plate cutting device is provided with a panel around a cutting blade, an opening is provided at the top of the panel, a dust cover is installed at the opening, and a suction pipe is connected to the top opening of the dust cover, and the suction pipe is connected to a negative pressure device to achieve the effect of sucking out flying dust.

[0004] However, as the blades in the enclosure rotate at high speed, their strong rotational force exerts a tangential force on the debris attached to the blades. Part of the tangential force causes a large amount of debris on the blades to move toward the side panels of the enclosure and attach to the side panels. The suction pipe set on the top of the enclosure is difficult to remove this part of the debris or flying dust without increasing the power of the negative pressure device. Utility Model Content

[0005] The embodiments of the utility model provide a dust removal structure and a plate cutting device, aiming to solve the problem of incomplete dust removal in the prior art methods.

[0006] In a first aspect, an embodiment of the utility model provides a dust removal structure, which includes: a panel assembly, including a top panel and a side panel, wherein the top panel and the side panel together define an internal space;

[0007] A knife shaft is disposed in the internal space, and the knife shaft is connected to the side plate via a bearing;

[0008] a blade, mounted on the blade shaft, wherein the blade shaft drives the blade to rotate in the internal space; and

[0009] The dust removal assembly includes a top dust removal port, a side dust removal port and a dust suction pipe. The edge of the top plate is concave to form the top dust removal port, and the upper edge of the side plate is concave to form the side dust removal port. The side plate forming the side dust removal port is perpendicular to the blade, and the dust suction pipe is connected to the top dust removal port and the side dust removal port at the same time. The dust suction pipe sucks out debris in the enclosure assembly by connecting to a negative pressure device.

[0010] In some embodiments, the dust removal assembly further includes a dust cover, which is disposed at the top dust removal port and the side dust removal port, and the dust suction pipe is connected to the dust cover.

[0011] In some embodiments, the dust cover includes a plurality of inclined side walls, and the plurality of side walls are sequentially connected to form an air flow channel, and the air flow channel is connected to the dust suction pipe.

[0012] In some embodiments, the side wall is inclined so that the cross-sectional size of the dust cover gradually decreases from the position of the enclosure assembly to the position of the dust removal pipe.

[0013] In some embodiments, the blade shaft includes an active end and a supporting end opposite to the active end, and an opening whose size is greater than or equal to the size of the blade is provided on the side panel near the supporting end, and the dust removal structure also includes a supporting end module, and the supporting end module is connected to the enclosure assembly to close the opening.

[0014] In some embodiments, the support end is tapered, the support end module includes an axis core that cooperates with the support end, the inner wall of the axis core is also tapered, and the support end fits against the inner wall of the axis core.

[0015] In some embodiments, the shaft core includes a cylindrical second main body portion and a second limiting portion, the second limiting portion is arranged at one end of the second main body portion, and the edge of the second limiting portion protrudes from the outer wall surface of the second main body portion; the support end module also includes a bearing assembly and a compression spring, the bearing assembly is assembled on the second main body portion, the compression spring is sleeved on the second main body portion, and one end of the compression spring is in contact with the second limiting portion, and the other end of the compression spring is in contact with the bearing assembly; the compression spring is in a compressed state.

[0016] In some embodiments, the support end module also includes an end cover, a cylindrical support seat, and an inner dust cover. The size of the end cover matches the size of the opening. A circular through hole is provided in the middle of the end cover. The support seat is passed through the circular through hole on the end cover. The shaft core is passed through the support seat. The inner dust cover blocks the gap between one end of the shaft core close to the support end and the support seat.

[0017] In some embodiments, the support end module also includes an outer dust cover, and the bearing assembly includes a bearing, a bearing locking ring and a bearing end cover; the bearing is sleeved on the second main body, the inner ring of the bearing is connected to the second main body, the bearing locking ring is threadedly connected to the end of the second main body away from the support end to fix the bearing on the second main body, the bearing end cover is sleeved on the bearing locking ring and is threadedly connected to the outer dust cover, and the outer dust cover is abutted against the support seat, so that the bearing end cover and the outer dust cover together block the gap between the bearing locking ring and the support seat.

[0018] In the second aspect, an embodiment of the utility model also provides a plate cutting device, wherein the plate cutting device includes the dust removal structure as described in the first aspect above, and the plate cutting device also includes a driving structure and a transmission structure; the driving structure is connected to the transmission structure, and the transmission structure is connected to the knife shaft.

[0019] The dust removal structure provided by the utility model is provided with a top dust removal port formed on the top plate, a side dust removal port formed on the side plate, and a dust suction pipe, the dust suction pipe is connected to the negative pressure device, and the dust suction pipe is also connected to the top dust removal port and the side dust removal port at the same time, and the side plate is perpendicular to the blade, so that the debris carried by the blade can enter the dust removal port and be sucked away by the dust suction pipe regardless of whether it moves toward the top plate or the side plate. Compared with the plate cutting device of the prior art, the dust removal effect of the dust removal component is more thorough, and the power of the negative pressure device does not need to be increased, which saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a partial explosion structure of a dust removal structure provided by an embodiment of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of a partial axial section of a cutter shaft, a nut and a supporting end module of a dust removal structure provided in an embodiment of the utility model;

[0023] Figure 3 A schematic structural diagram of a combination of a dust removal assembly and a dust removal assembly of a dust removal structure provided in an embodiment of the utility model;

[0024] Figure 4 for Figure 1 An enlarged structural schematic diagram of a support base of the dust removal structure shown;

[0025] Figure 5 for Figure 1 An enlarged structural schematic diagram of the shaft core of the dust removal structure shown.

[0026] Figure numbers: enclosure assembly 1; side panel 11; top panel 12; opening 13; blade shaft 2; active end 21; support end 22; nut 3; support end module 4; end cover 41; handle 42; support seat 43; first main body 431; first part 4311; second part 4312; first limiting part 432; shaft core 44; second main body 441; second limiting part 442; compression spring 45; bearing 461 assembly 46; bearing 461; bearing locking ring 462; bearing end cover 463; inner dust cover 47; outer dust cover 48; dust removal assembly 5; top dust removal port 51; side dust removal port 52; dust suction pipe 53; dust cover 54; connecting plate 6; pressure strip 7. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0029] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0030] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] In this example, see Figures 1 to 3As shown in the figure, the embodiment of the utility model provides a dust removal structure for dust removal during the plate cutting process. The dust removal structure may include a panel assembly 1, a knife shaft 2, a blade (not shown in the figure), a nut 3, a support end module 4 and a dust removal assembly 5. The panel assembly 1 separates the blade from the environment outside the panel assembly 1 to prevent the debris generated by cutting from splashing, and also protects the operator from being cut by the rotating blade. The knife shaft 2 is arranged in the space inside the panel assembly 1 as a base for the blade to be installed. The blade is assembled on the knife shaft 2, and the blade can be a plurality of disc-shaped blades with serrations. The rotation of the knife shaft 2 can drive the blade to rotate, thereby cutting the plate, and the plate can be an aluminum substrate. The nut 3 is arranged on one side of the blade, and the nut 3 is connected to the knife shaft 2 by a thread to fix the blade on the knife shaft 2. The support end module 4 is connected to the panel assembly 1. The dust removal assembly 5 absorbs the flying dust or debris generated in the panel assembly 1 by connecting a negative pressure device. The flying dust or debris is generated by the high-speed operation of the blade to cut the plate.

[0032] In some embodiments, the enclosure assembly 1 may include a side panel 11, a top panel 12, and an opening 13. The top panel 12 and the side panel 11 together limit an internal space, and the blade shaft 2 is arranged in the internal space, and the blade shaft 2 and the side panel 11 are connected by a bearing 461, so that the blade shaft 2 can rotate relative to the side panel 11. The side panel 11 can be set to four pieces, and the four side panels 11 are connected in sequence, and the top panel 12 is set on the top of the side panel 11; the side panel 11 and the top panel 12 of the enclosure assembly 1 can also be integrally formed. The opening 13 is set on the side panel 11, and the size of the opening 13 is greater than or equal to the size of the blade, so that when the blade is disassembled or installed, the blade can pass through the opening 13. After the blade is installed, the support end module 4 is connected to the enclosure assembly 1 to close the opening 13; the opening 13 can be formed by the lower edge of the side panel 11 being recessed upward, or it can be set in the middle of the side panel 11.

[0033] In some embodiments, the knife shaft 2 may include an active end 21 and a supporting end 22. The supporting end 22 is conically arranged. The active end 21 and the supporting end 22 are arranged opposite to each other. The active end 21 passes through the corresponding side plate 11 to extend outside the side plate 11. The end cross-sectional shape of the active end 21 is polygonal, specifically a quadrilateral or a hexagon, so that the operator can use a wrench to cooperate with the active end 21 during disassembly.

[0034] The active end 21 of the blade shaft 2 and the side plate 11 are connected via a bearing 461, so that the blade shaft 2 can rotate relative to the side plate 11; the support end module 4 supports the support end 22 of the blade shaft 2, so that the blade shaft 2 can maintain high precision and stability under high-speed rotation, thereby improving the service life of the blade shaft 2. The distance from the nut 3 to the support end 22 is smaller than the distance from the nut 3 to the active end 21, and the opening 13 is arranged on the side plate 11 near the support end 22, that is, the opening 13 and the nut 3 are arranged on the same side of the blade, and on the side closer to the support end 22, so that when disassembling, the nut 3 and the blade are taken out from the opening 13 near the support end 22, and when installing, the reverse operation is sufficient.

[0035] In some embodiments, the support end module 4 may include an end cover 41, a handle 42, a support seat 43, a shaft core 44, a compression spring 45, a bearing 461 assembly 46, an inner dust cover 47 and an outer dust cover 48, wherein the support seat 43, the shaft core 44, the bearing 461 assembly 46, the compression spring 45, the inner dust cover 47 and the outer dust cover 48 are all coaxially arranged with the knife shaft 2. The end cover 41 is the main body of the support end module 4, and its size matches the size of the opening 13 on the side plate 11, and is used to close the opening 13. The end cover 41 and the side plate 11 are connected by a screw connection, and a circular through hole is provided in the middle of the end cover 41. The handle 42 is arranged on the end cover 41, and the handle 42 is arranged on the side of the end cover 41 away from the side plate 11, and the number of the handle 42 can be set to a pair; the handle 42 is used for the operator to hold the support end module 4, so as to facilitate the movement of the support end module 4 during disassembly or installation. The support seat 43 is cylindrical and is passed through the circular through hole of the end cover 41. The shaft core 44 is passed through the support seat 43. The shaft core 44 is also cylindrical and the inner wall of the shaft core 44 is conical. The conical inner wall fits with the conical support end 22 so that the shaft core 44 can rotate with the rotation of the knife shaft 2. The bearing 461 assembly 46 is assembled on the shaft core 44, and the bearing 461 assembly 46 is also arranged in the cylindrical support seat 43. The compression spring 45 is sleeved on the shaft core 44. The compression spring 45 is in a compressed state, and the elastic force generated by it can make the shaft core 44 fit fully with the support end 22. A through hole is provided in the center of the inner dust cover 47. The inner wall of the through hole is threadedly connected to one end of the shaft core 44 close to the support end 22. The inner dust cover 47 is also sleeved on the support seat 43, which is used to prevent the debris or flying dust generated by cutting from entering the support end module 4. The outer dust cover 48 is assembled on the end of the shaft core 44 away from the support end 22 to prevent external dust from entering into the support end module 4.

[0036] See also Figure 4Specifically, the support seat 43 may include a cylindrical first main body portion 431 and a first limiting portion 432, the first limiting portion 432 is arranged on the outer peripheral surface of the first main body portion 431 and protrudes from the outer peripheral surface of the first main body portion 431, and the side of the first limiting portion 432 away from the supporting end 22 abuts against the side of the end cover 41 close to the supporting end 22; in this way, the first limiting portion 432 separates the outer peripheral surface of the first main body portion 431 into a first part 4311 and a second part 4312, the first part 4311 is used for the inner dust cover 47 to be sleeved, and the second part 4312 passes through the circular through hole in the middle of the end cover 41.

[0037] See also Figure 5 The shaft core 44 may include a cylindrical second main body portion 441 and a second limiting portion 442, the second limiting portion 442 is arranged at one end of the second main body portion 441, and the edge of the second limiting portion 442 protrudes from the outer wall surface of the second main body portion 441; the above-mentioned bearing assembly 46 is assembled on the second main body portion 441, and the bearing 461 assembly 46 is spaced a distance from the second limiting portion 442; the above-mentioned compression spring 45 is sleeved on the second main body portion 441 and is located between the bearing 461 assembly 46 and the second limiting portion 442, one end of the compression spring 45 contacts the second limiting portion 442, and the other end of the compression spring 45 contacts the bearing 461 assembly 46, and the compression spring 45 is in a compressed state, so that the elastic force generated by the compression spring 45 in the axial direction can apply a thrust to the second limiting portion 442, and the tapered inner wall of the auxiliary shaft core 44 fits with the tapered support end 22, further ensuring the concentricity of the support end module 4 and the knife shaft 2.

[0038] The bearing assembly 46 includes a bearing 461, a bearing locking ring 462 and a bearing end cover 463; the bearing 461 is sleeved on the second main body 441, the inner ring of the bearing 461 is connected to the second main body 441, and the bearing locking ring 462 and the end of the second main body 441 away from the support end 22 are connected by threads to fix the bearing 461 on the second main body 441. The bearing end cover 463 is sleeved on the bearing locking ring 462, abuts against the support seat 43, and is connected to the outer dust cover 48 by threads to prevent external dust from entering the bearing 461 assembly 46 and affecting the working performance of the bearing 461.

[0039] The support end module 4 is a pre-assembled module. When installing or removing it and the side plate 11, it is only necessary to install or remove the screw connection between the two, which is convenient and quick, making the installation and removal of the blade more efficient.

[0040] In some embodiments, the dust removal assembly 5 may include a top dust removal port 51, a side dust removal port 52, a dust suction pipe 53, and a dust cover 54. The top dust removal port 51 is formed by the concave edge of the top plate 12 of the enclosure assembly 1, and the side dust removal port 52 is formed by the concave upper edge of the side plate 11. The top dust removal port 51 and the side dust removal port 52 intersect to expand the scope of dust removal. The top plate 12 forming the top dust removal port 51 is perpendicular to the blade, and the side plate 11 forming the side dust removal port 52 is also perpendicular to the blade, so that the top dust removal port 51 and the side dust removal port 52 are both facing the tangent direction of the blade rotation, so that the debris carried by the blade can enter the dust removal port regardless of whether it moves toward the top plate 12 or the side plate 11, so that the dust removal effect of the dust removal assembly 5 is more thorough, and the power of the negative pressure device does not need to be increased, saving costs.

[0041] The dust suction pipe 53 is connected to the top dust removal port 51 and the side dust removal port 52 at the same time; the dust suction pipe 53 is connected to the negative pressure device to suck out the debris or flying dust in the enclosure assembly 1. The dust cover 54 is arranged at the top dust removal port 51 and the side dust removal port 52, and the dust suction pipe 53 is connected to the dust cover 54.

[0042] In some embodiments, the dust cover 54 may include a plurality of inclined side walls, which are sequentially connected to form an airflow channel, and the airflow channel is connected to the dust collection pipe 53. The inclination of the side walls of the dust cover 54 gradually reduces the cross-sectional size of the dust cover 54 from the position of the enclosure assembly 1 to the position of the dust collection pipe. The inclined side wall has two advantages. First, the inclination of the side wall can avoid the driving structure (not shown in the figure) above the enclosure assembly 1, so that the arrangement of the dust collection pipe 53 is not affected by the position of the driving structure; second, the inclination of the side wall gradually reduces the cross-sectional size of the dust cover 54 from the position of the enclosure assembly 1 to the position of the dust collection pipe, which helps to converge the airflow and gradually reduces the size of the airflow channel inside it, so that the gas pressure of the airflow inside it from the enclosure assembly 1 to the dust collection pipe 53 increases, thereby strengthening the gas power, improving the dust collection effect of the dust collection assembly, and making the dust collection more thorough.

[0043] The dust removal structure provided by the utility model is provided with a top dust removal port 51 formed on the top plate 12, a side dust removal port 52 formed on the side plate 11, and a dust suction pipe 53, the dust suction pipe 53 is connected to the negative pressure device, and the dust suction pipe 53 is also connected to the top dust removal port 51 and the side dust removal port 52 at the same time, and the side plate 11 is perpendicular to the blade, so that the debris carried by the blade can enter the dust removal port and be sucked away by the dust suction pipe 53 regardless of whether it moves toward the top plate 12 or the side plate 11. Compared with the plate cutting device of the prior art, the dust removal effect of the dust removal component 5 is more thorough, and the power of the negative pressure device does not need to be increased, which saves costs.

[0044] The utility model embodiment also discloses a plate cutting device, which also includes the above-mentioned dust removal structure, connecting plate 6, pressure strip 7, driving structure and transmission structure; the connecting plate 6 is arranged on the outer wall of the side plate 11, and the pressure strip 7 is arranged at the lower end of the connecting plate 6. The pressure strip 7 can be arranged in parallel, and the pressure strip 7 is correspondingly arranged at the gap between adjacent blades; the pressure strip 7 generates downward pressure due to its own elastic force, and the pressure strip 7 can be used to press the plate to be cut, ensuring that the plate remains flat during the cutting process, so that each blade can accurately cut the plate below it, thereby improving the cutting effect of the plate. The driving structure is connected to the transmission structure, and the transmission structure is connected to the active end 21 of the knife shaft 2, wherein the driving structure can be a motor, and the transmission structure can be a crawler or a chain; in this way, the driving structure and the transmission structure cooperate to drive the knife shaft 2 to rotate, and then drive the blade to rotate, and then complete the cutting of the plate.

[0045] The plate cutting device is mainly used in the fields of aluminum substrate processing and building material cutting in industrial production in actual use scenarios. In aluminum substrate processing plants, workers need to cut large pieces of plate to meet customer needs. However, a large amount of fine flying chips and flying dust will be generated when cutting the plate, which will not only bring a dirty and messy impact to the working environment, but also may cause potential harm to the health of workers. In addition to the cutting function, the plate cutting device is also equipped with a powerful dust removal component 5, including a top dust removal port 51, a side dust removal port 52, a dust cover 54 and a dust suction pipe 53. The dust cover 54 is installed at the top dust removal port 51 and the side dust removal port 52 of the dust removal component 5, and the dust suction pipe 53 is connected to the dust cover 54. By connecting the negative pressure device, the flying dust generated in the plate cutting device is quickly sucked in and removed, effectively controlling the diffusion of the flying dust. Compared with the prior art, the dust collection is more thorough and the dust removal effect is better. In actual use, when the knife shaft 2 and the blade start to operate, the dust removal component 5 starts. The fine debris and flying dust generated in the enclosure assembly 1 will be sucked into the dust cover 54 and transmitted to the negative pressure device through the dust suction pipe 53 for filtration and removal. In this way, the working area is always kept clean and the flying dust will not spread into the surrounding environment. The use effect of this plate cutting device is significant. It reduces the flying dust generated during the cutting process and keeps the working environment clean. Workers can operate in fresh air, which improves work efficiency and comfort. Secondly, by timely removing flying dust, this device protects the health and safety of workers and reduces the risk of inhaling fine particles.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dust removal structure, characterized in that: include: The enclosure assembly (1) comprises a top plate (12) and a side plate (11), wherein the top plate (12) and the side plate (11) together define an internal space; A knife shaft (2) is arranged in the internal space, and the knife shaft (2) is connected to the side plate (11) via a bearing (461); A blade is mounted on the blade shaft (2), and the blade shaft (2) drives the blade to rotate in the internal space; as well as A dust removal assembly (5) comprises a top dust removal port (51), a side dust removal port (52) and a dust suction pipe (53); the edge of the top plate (12) is concave to form the top dust removal port (51); the upper edge of the side plate (11) is concave to form the side dust removal port (52); the side plate (11) forming the side dust removal port (52) is perpendicular to the blade; the dust suction pipe (53) is connected to the top dust removal port (51) and the side dust removal port (52); the dust suction pipe (53) sucks away debris in the enclosure assembly (1) by connecting to a negative pressure device.

2. The dust removal structure according to claim 1, characterized in that: The dust removal assembly (5) further comprises a dust cover (54), wherein the dust cover (54) is arranged at the top dust removal port (51) and the side dust removal port (52), and the dust suction pipe (53) is connected to the dust cover (54).

3. The dust removal structure according to claim 2, characterized in that: The dust cover (54) comprises a plurality of inclined side walls, the plurality of side walls being sequentially connected to form an air flow channel, and the air flow channel is connected to the dust suction pipe (53).

4. The dust removal structure according to claim 3, characterized in that: The side wall is inclined so that the cross-sectional dimension of the dust cover (54) gradually decreases from the position of the enclosure assembly (1) to the position of the dust suction pipe (53).

5. The dust removal structure according to claim 1, characterized in that: The blade shaft (2) comprises an active end (21) and a supporting end (22) opposite to the active end (21); an opening (13) having a size greater than or equal to the size of the blade is provided on the side panel (11) near the supporting end (22); the dust removal structure further comprises a supporting end module (4); the supporting end module (4) is connected to the enclosure assembly (1) to close the opening (13).

6. The dust removal structure according to claim 5, characterized in that: The support end (22) is conical, and the support end module (4) includes an axis core (44) that cooperates with the support end (22). The inner wall of the axis core (44) is also conical, and the support end (22) fits the inner wall of the axis core (44).

7. The dust removal structure according to claim 6, characterized in that: The shaft core (44) includes a cylindrical second main body (441) and a second limiting portion (442), wherein the second limiting portion (442) is arranged at one end of the second main body (441), and the edge of the second limiting portion (442) protrudes from the outer wall surface of the second main body (441); the support end module (4) module also includes a bearing assembly (46) and a compression spring (45), wherein the bearing assembly (46) is assembled on the second main body (441), and the compression spring (45) is sleeved on the second main body (441), and one end of the compression spring (45) is in contact with the second limiting portion (442), and the other end of the compression spring (45) is in contact with the bearing assembly (46); the compression spring (45) is in a compressed state.

8. The dust removal structure according to claim 7, characterized in that: The support end module (4) further comprises an end cover (41), a cylindrical support seat (43), and an inner dust cover (47); the size of the end cover (41) matches the size of the opening (13); a circular through hole is provided in the middle of the end cover (41); the support seat (43) is passed through the end cover (41) through the circular through hole; the shaft core (44) is passed through the support seat (43); and the inner dust cover (47) blocks the gap between the end of the shaft core (44) close to the support end (22) and the support seat (43).

9. The dust removal structure according to claim 8, characterized in that: The support end module (4) further comprises an outer dust cover (48); the bearing assembly (46) comprises a bearing (461), a bearing locking ring (462) and a bearing end cover (463); the bearing (461) is sleeved on the second main body (441); the inner ring of the bearing (461) is connected to the second main body (441); the bearing locking ring (462) is screwed to the end of the second main body (441) away from the support end (22). The bearing (461) is connected by a thread to fix the bearing (461) on the second main body (441); the bearing end cover (463) is sleeved on the bearing locking ring (462) and is connected to the outer dust cover (48) by a thread; the outer dust cover (48) abuts against the support seat (43), so that the bearing end cover (463) and the outer dust cover (48) together block the gap between the bearing locking ring (462) and the support seat (43).

10. A plate cutting device, characterized in that: The plate cutting device comprises the dust removal structure according to any one of claims 1 to 9, and the plate cutting device further comprises a driving structure and a transmission structure; the driving structure is connected to the transmission structure, and the transmission structure is connected to the knife shaft (2).

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