Continuous cutting device for steel structure profile machining and cutting method of continuous cutting device

Abstract

The invention relates to the technical field of steel structure profile cutting machining devices, and provides a continuous cutting device for steel structure profile machining and a cutting method.The continuous cutting device comprises a conveying frame, a blowing mechanism is installed on the outer wall of the conveying frame, and the blowing mechanism comprises a frame plate fixedly installed on the outer wall of the conveying frame; the outer wall of the frame plate is fixedly connected with a first motor, an output shaft of the first motor is fixedly connected with a rotating rod through a coupler, one end of the rotating rod is fixedly connected with a cam, and the blowing mechanism further comprises a sleeve fixedly installed on the outer wall of the conveying frame. By starting a first motor, a cam fixedly connected with one end of a rotating rod can rotate, so that the cam extrudes a bearing plate, a piston fixedly connected with one end of a movable rod is driven to slide along a sleeve, and exhausted air is conveyed into a blowing plate through a first air guide pipe; and the effect of conveniently blowing dust attached to the surface of the steel structure profile is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure profile cutting and processing devices, and in particular to a continuous cutting device for steel structure profile processing and a cutting method thereof. Background Art

[0002] Steel structure profiles are metal materials used to build steel buildings, bridges, towers and other engineering structures. They usually have specific shapes, sizes and mechanical properties. The continuous cutting device for steel structure profile processing is a device specifically used for continuous cutting of steel structure profiles. It usually uses various cutting technologies, such as flame cutting, plasma cutting, laser cutting, etc., to quickly melt or vaporize steel structure profiles in local areas through high temperature and high energy beams, thereby achieving the purpose of cutting. During the cutting process, the cutting device moves continuously along the preset path of the steel structure profile, and the cutting tool continues to work to complete the continuous cutting operation of the profile;

[0003] To this end, the patent with the authorization announcement number CN112743162B discloses a new type of steel rapid cutting device for steel structure processing, including a cutting operation box, the outer wall of which is fixedly mounted with a first motor, the output shaft of the first motor extends to the interior of the cutting operation box and is fixedly connected with a first rotating rod, and the end of the first rotating rod away from the output shaft of the first motor is rotatably connected to the inner wall of the cutting operation box through a bearing. The trash can can be clamped by the two first L-shaped rods, and can be contacted with the trash can by the contact plate, and then the first motor is started to make the trash can tip over to dump the trash inside the cutting operation box. The automatic loading and tipping mechanism of the entire garbage truck is very stable when working, so that the trash can is not easy to fall out when tipping over, which reduces a lot of unnecessary troubles for the garbage disposal staff;

[0004] The above-mentioned existing technical solutions have the following defects: it is inconvenient to clean the dust attached to the surface of the steel structure profile before cutting, which results in the inability to remove the dust in a timely and convenient manner during the cutting process. Due to the lack of appropriate cleaning methods, the attached dust will produce a series of adverse effects as the cutting process proceeds. For example, dust may enter the key components of the cutting equipment, accelerate the wear of the equipment, and reduce the service life of the equipment; at the same time, dust may also be mixed into the incision of the steel structure profile after cutting, affecting the quality of the incision, reducing the accuracy and performance of the product, and causing many inconveniences to the subsequent processing procedures. Summary of the invention

[0005] The object of the present invention is to provide a continuous cutting device for steel structure profiles and a cutting method thereof, so as to solve the defect that the existing continuous cutting device for steel structure profiles is inconvenient to clean the dust attached to the surface of the steel structure profiles before cutting and processing.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A continuous cutting device for steel structure profiles, including a conveying frame;

[0007] A blowing mechanism is installed on the outer wall of the conveying frame. The blowing mechanism includes a frame plate fixedly installed on the outer wall of the conveying frame. A first motor is fixedly connected to the outer wall of the frame plate. The output shaft of the first motor is fixedly connected to a rotating rod through a coupling. One end of the rotating rod is fixedly connected to a cam. The blowing mechanism also includes a sleeve fixedly installed on the outer wall of the conveying frame. A piston is movably connected inside the sleeve. One side of the piston is fixedly connected to a movable rod. One end of the movable rod is fixedly connected to a receiving plate;

[0008] A first air duct is fixedly connected to the outer wall of the sleeve. One end of the first air duct is fixedly connected to a blowing plate. A first one-way valve is installed on the top of the sleeve. A second one-way valve is installed on the bottom of the sleeve;

[0009] A laser cutting machine is installed on the top of the conveying frame. A laser cutting head is movably installed on one side of the laser cutting machine. A collection box is installed on one side of the conveying frame.

[0010] Preferably, the cam forms a rotating structure with the frame plate through the rotating rod. The cam is movably connected to the receiving plate. The first one-way valve is symmetrically arranged with respect to the central axis of the sleeve. The second one-way valve is symmetrically arranged with respect to the central axis of the sleeve.

[0011] Preferably, the sleeve is of a slotted design. The sleeve and the piston form a sliding structure. A spring is fixedly connected to one side of the receiving plate. The spring is sleeved on the outer wall of the movable rod.

[0012] Preferably, a cleaning mechanism is fixedly connected to the outer wall of the sleeve. The cleaning mechanism includes a second air duct fixedly installed on the top of the sleeve. One end of the second air duct is fixedly connected to a sealing insertion tube. A rotating shaft is snap-fitted on the outer wall of the sealing insertion tube. A cleaning roller is fixedly connected to the outer wall of the rotating shaft. A brush is fixedly connected to the outer wall of the cleaning roller. Air blowing holes are formed inside the cleaning roller.

[0013] Preferably, the rotating shaft is of a hollow design. The rotating shaft and the sealing insertion tube form a rotating structure.

[0014] Preferably, the cleaning roller forms a rotating structure with the conveying frame through the rotating shaft. The brushes are arranged in a circular array with respect to the central axis of the cleaning roller.

[0015] Preferably, a first synchronous pulley is fixedly connected to the outer wall of the rotating shaft. A synchronous belt is installed on the outer wall of the first synchronous pulley. A second synchronous pulley is installed on the inner wall of the synchronous belt. The first synchronous pulley is meshed and connected with the synchronous belt. The synchronous belt is meshed and connected with the second synchronous pulley.

[0016] Preferably, a feeding mechanism is fixedly connected to the outer wall of the conveying frame. The feeding mechanism includes a second motor fixedly installed on one side of the conveying frame. The output shaft of the second motor is fixedly connected with a movable shaft through a coupling. A conveying roller is fixedly connected to the outer wall of the movable shaft. A gear is fixedly connected to the outer wall of the movable shaft. A toothed belt is installed on the outer wall of the gear.

[0017] Preferably, the conveying roller is rotationally connected to the conveying frame through the movable shaft. The gear is meshed and connected with the toothed belt. The gears are arranged at equal intervals along the inner wall of the toothed belt.

[0018] A cutting method for a continuous cutting device for steel structure profiles includes the following steps:

[0019] S1. Start the first motor, which can cause the cam fixedly connected to one end of the rotating rod to rotate, so that the cam squeezes the bearing plate, driving the piston fixedly connected to one end of the movable rod to slide along the sleeve, enabling air to enter the sleeve through the second one-way valve and discharging from the first one-way valve as the piston moves. When the piston slides back, the air will be discharged through the first one-way valve on the other side, and the discharged air is conveyed to the blowing plate through the first air duct. When the steel structure profile is conveyed past the bottom of the blowing plate, the dust is blown away.

[0020] S2. When the air in the sleeve is compressed, it will be conveyed to the rotating shaft installed at one end of the sealing insertion pipe through the second air duct, and then the air is discharged through the air blowing holes opened inside the cleaning roller, which can clean the dust on the steel structure profile.

[0021] S3. When the movable shaft rotates, it can drive the second synchronous pulley to rotate. Under the action of the synchronous belt, the first synchronous pulley can be rotated, causing the rotating shaft to rotate, and then driving the brush fixedly connected to the outer wall of the cleaning roller to clean the steel structure profile.

[0022] S4. Start the second motor, which can cause the movable shaft to rotate, driving the gear to rotate. Under the action of the toothed belt, multiple gears can be rotated, thereby driving multiple conveying rollers to rotate, and the steel structure profile can be stably fed.

[0023] A continuous cutting device for steel structure profiles and its cutting method provided by the present invention have the following advantages:

[0024] By setting up a purging mechanism, a first air duct, a purging plate, a first one-way valve and a second one-way valve, and starting the first motor, the cam fixedly connected to one end of the rotating rod can be rotated, so that the cam squeezes the receiving plate, driving the piston fixedly connected to one end of the movable rod to slide along the sleeve, enabling air to enter the sleeve through the second one-way valve, and discharging from the first one-way valve along with the movement of the piston, and making the discharged air be conveyed to the purging plate through the first air duct. When the steel structure profile is conveyed past the bottom of the purging plate, the dust is purged, achieving the effect of facilitating the purging of the dust adhering to the surface of the steel structure profile;

[0025] Furthermore, under the action of the spring, the piston can slide reciprocally. When the piston slides back, the air will be discharged through the first one-way valve on the other side, further improving the efficiency of purging the dust on the steel structure profile;

[0026] Furthermore, when the air in the sleeve is compressed, it will be conveyed through the second air duct to the rotating shaft installed at one end of the sealing insertion tube, and then the air is discharged through the air blowing holes opened inside the cleaning roller, and the dust on the steel structure profile can be purged;

[0027] Furthermore, when the movable shaft rotates, it can drive the second synchronous pulley to rotate. Under the action of the synchronous belt, the first synchronous pulley can be made to rotate, causing the rotating shaft to rotate, and then driving the brush fixedly connected to the outer wall of the cleaning roller to clean the steel structure profile, further improving the quality of cleaning the dust adhering to the surface of the steel structure profile, and thus improving the precision of cutting and processing the steel structure profile;

[0028] By setting up a feeding mechanism, and starting the second motor, the movable shaft can be rotated to drive the gear to rotate. Under the action of the toothed belt, multiple gears can be made to rotate, thereby driving multiple conveyor rollers to rotate, and the steel structure profile can be stably fed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0030] Figure 2 is the front view schematic diagram of the present invention;

[0031] Figure 3 is the top view schematic diagram of the purging mechanism of the present invention;

[0032] Figure 4 is the three-dimensional cross-sectional view of the sleeve of the present invention;

[0033] Figure 5 is the three-dimensional view of the cam of the present invention;

[0034] Figure 6 is the top view schematic diagram of the cleaning mechanism of the present invention;

[0035] Figure 7 Stereoscopic sectional view of the cleaning roller of the present invention;

[0036] Figure 8 Stereogram of the purging plate of the present invention;

[0037] Figure 9 Top view schematic diagram of the present invention;

[0038] Figure 10 Top view schematic diagram of the feeding mechanism of the present invention.

[0039] Explanation of the reference numerals in the figure: 1, transfer rack; 2, purging mechanism; 21, rack plate; 22, first motor; 23, rotating rod; 24, cam; 25, sleeve; 26, piston; 27, movable rod; 28, receiving plate; 3, first air duct; 4, purging plate; 5, cleaning mechanism; 51, second air duct; 52, sealing insertion tube; 53, rotating shaft; 531, first synchronous pulley; 532, synchronous belt; 533, second synchronous pulley; 54, cleaning roller; 55, brush; 56, air blowing holes; 6, feeding mechanism; 61, second motor; 62, movable shaft; 63, transfer roller; 64, gear; 65, toothed belt; 7, laser cutting machine; 8, laser cutting head; 9, collection box; 10, first one-way valve; 11, second one-way valve. Detailed implementation manners

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1-10 , a continuous cutting device for steel structure profiles provided by the present invention includes a transfer rack 1.

[0042] Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8As shown in the figure, a purging mechanism 2 is installed on the outer wall of the conveying rack 1. The purging mechanism 2 includes a rack plate 21 fixedly installed on the outer wall of the conveying rack 1. A first motor 22 is fixedly connected to the outer wall of the rack plate 21. The output shaft of the first motor 22 is fixedly connected to a rotating rod 23 through a coupling. One end of the rotating rod 23 is fixedly connected to a cam 24. The purging mechanism 2 further includes a sleeve 25 fixedly installed on the outer wall of the conveying rack 1. A piston 26 is movably connected inside the sleeve 25. One side of the piston 26 is fixedly connected to a movable rod 27. One end of the movable rod 27 is fixedly connected to a receiving plate 28. A first air duct 3 is fixedly connected to the outer wall of the sleeve 25. One end of the first air duct 3 is fixedly connected to a purging plate 4. A first one-way valve 10 is installed at the top of the sleeve 25, and a second one-way valve 11 is installed at the bottom of the sleeve 25. The cam 24 forms a rotating structure with the rack plate 21 through the rotating rod 23. The cam 24 is movably connected to the receiving plate 28. The first one-way valve 10 is symmetrically arranged with respect to the central axis of the sleeve 25, and the second one-way valve 11 is symmetrically arranged with respect to the central axis of the sleeve 25. The sleeve 25 is of a slotted design. The sleeve 25 and the piston 26 form a sliding structure. A spring is fixedly connected to one side of the receiving plate 28, and the spring is sleeved on the outer wall of the movable rod 27.

[0043] By starting the first motor 22, the cam 24 fixedly connected to one end of the rotating rod 23 can be rotated, so that the cam 24 squeezes the receiving plate 28, driving the piston 26 fixedly connected to one end of the movable rod 27 to slide along the sleeve 25, enabling air to enter the sleeve 25 through the second one-way valve 11 and being discharged from the first one-way valve 10 along with the movement of the piston 26. The discharged air is conveyed to the purging plate 4 through the first air duct 3. When the steel structure profile is conveyed past the bottom of the purging plate 4, the dust is purged. Under the action of the spring, the piston 26 can slide reciprocally. When the piston 26 slides back, the air will be discharged through the first one-way valve 10 on the other side, further improving the efficiency of purging the dust on the steel structure profile.

[0044] Refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 and Figure 7As shown in the figure, a cleaning mechanism 5 is fixedly connected to the outer wall of the sleeve 25. The cleaning mechanism 5 includes a second air duct 51 fixedly installed at the top of the sleeve 25. One end of the second air duct 51 is fixedly connected to a sealing insertion tube 52. A rotating shaft 53 is snap-fitted on the outer wall of the sealing insertion tube 52. A cleaning roller 54 is fixedly connected to the outer wall of the rotating shaft 53. A brush 55 is fixedly connected to the outer wall of the cleaning roller 54. An air blowing hole 56 is opened inside the cleaning roller 54. The rotating shaft 53 is of a hollow design. The rotating shaft 53 and the sealing insertion tube 52 form a rotating structure. The cleaning roller 54 forms a rotating structure with the conveying frame 1 through the rotating shaft 53. The brushes 55 are arranged in a circular array centered on the central axis of the cleaning roller 54. A first synchronous pulley 531 is fixedly connected to the outer wall of the rotating shaft 53. A synchronous belt 532 is installed on the outer wall of the first synchronous pulley 531. A second synchronous pulley 533 is installed on the inner wall of the synchronous belt 532. The first synchronous pulley 531 is meshed with the synchronous belt 532. The synchronous belt 532 is meshed with the second synchronous pulley 533.

[0045] When the air in the sleeve 25 is compressed, it will be conveyed through the second air duct 51 to the rotating shaft 53 installed at one end of the sealing insertion tube 52, and then the air will be discharged through the air blowing holes 56 opened inside the cleaning roller 54, which can blow the dust on the steel structure profiles. When the movable shaft 62 rotates, it can drive the second synchronous pulley 533 to rotate. Under the action of the synchronous belt 532, the first synchronous pulley 531 can be rotated, so that the rotating shaft 53 rotates, and then the brush 55 fixedly connected to the outer wall of the cleaning roller 54 can clean the steel structure profiles.

[0046] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 9 and Figure 10 As shown in the figure, a laser cutting machine 7 is installed on the top of the conveying frame 1. A laser cutting head 8 is movably installed on one side of the laser cutting machine 7. A collection box 9 is installed on one side of the conveying frame 1. A feeding mechanism 6 is fixedly connected to the outer wall of the conveying frame 1. The feeding mechanism 6 includes a second motor 61 fixedly installed on one side of the conveying frame 1. The output shaft of the second motor 61 is fixedly connected to a movable shaft 62 through a coupling. A conveying roller 63 is fixedly connected to the outer wall of the movable shaft 62. A gear 64 is fixedly connected to the outer wall of the movable shaft 62. A toothed belt 65 is installed on the outer wall of the gear 64. The conveying roller 63 forms a rotating structure with the conveying frame 1 through the movable shaft 62. The gear 64 is meshed with the toothed belt 65. The gears 64 are arranged at equal intervals on the inner wall of the toothed belt 65.

[0047] By starting the second motor 61, the movable shaft 62 can be rotated to drive the gear 64 to rotate. Under the action of the toothed belt 65, multiple gears 64 can be rotated, thereby driving multiple conveying rollers 63 to rotate, enabling stable feeding of the steel structure profiles. When the steel structure profiles are conveyed to the lower part of the laser cutting machine 7, start the laser cutting machine 7, control the laser cutting head 8 to move to the required cutting position, and start the laser cutting head 8 to cut the steel structure profiles, and make the cutting waste fall into the collection box 9 for collection.

[0048] A cutting method for a continuous cutting device for processing steel structure profiles, comprising the following steps:

[0049] S1. By starting the first motor 22, the cam 24 fixedly connected to one end of the rotating rod 23 can be rotated, so that the cam 24 presses on the bearing plate 28, driving the piston 26 fixedly connected to one end of the movable rod 27 to slide along the sleeve 25, enabling air to enter the sleeve 25 through the second one-way valve 11 and discharging from the first one-way valve 10 along with the movement of the piston 26. When the piston 26 slides back, the air will be discharged through the first one-way valve 10 on the other side, and the discharged air is conveyed to the blowing plate 4 through the first air duct 3. When the steel structure profiles are conveyed past the bottom of the blowing plate 4, the dust is blown away;

[0050] S2. When the air in the sleeve 25 is compressed, it will be conveyed to the rotating shaft 53 installed at one end of the sealing insertion tube 52 through the second air duct 51, and then the air is discharged through the air blowing holes 56 formed inside the cleaning roller 54, which can clean the dust on the steel structure profiles;

[0051] S3. When the movable shaft 62 rotates, it can drive the second synchronous wheel 533 to rotate. Under the action of the synchronous belt 532, the first synchronous wheel 531 can be rotated, causing the rotating shaft 53 to rotate, and then driving the brush 55 fixedly connected to the outer wall of the cleaning roller 54 to clean the steel structure profiles;

[0052] S4. By starting the second motor 61, the movable shaft 62 can be rotated to drive the gear 64 to rotate. Under the action of the toothed belt 65, multiple gears 64 can be rotated, thereby driving multiple conveying rollers 63 to rotate, enabling stable feeding of the steel structure profiles.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A continuous cutting device for processing steel structure profiles, comprising a conveyor frame (1); Features: The outer wall of the conveying frame (1) is installed with a purge mechanism (2), and the purge mechanism (2) comprises a frame plate (21) fixedly installed on the outer wall of the conveying frame (1), and the outer wall of the frame plate (21) is fixedly connected with a first motor (22), and the output shaft of the first motor (22) is fixedly connected with a rotating rod (23) through a coupling, and one end of the rotating rod (23) is fixedly connected with a cam (24), and the purge mechanism (2) also comprises a sleeve (25) fixedly installed on the outer wall of the conveying frame (1), and the sleeve (25) is movably connected with a piston (26) inside, and one side of the piston (26) is fixedly connected with a movable rod (27), and one end of the movable rod (27) is fixedly connected with a receiving plate (28); The outer wall of the sleeve (25) is fixedly connected to a first air guide pipe (3), one end of the first air guide pipe (3) is fixedly connected to a purge plate (4), a first one-way valve (10) is installed on the top of the sleeve (25), and a second one-way valve (11) is installed on the bottom of the sleeve (25); A laser cutting machine (7) is installed on the top of the conveying frame (1), a laser cutting head (8) is movably installed on one side of the laser cutting machine (7), and a collection box (9) is installed on one side of the conveying frame (1).

2. A continuous cutting device for processing steel structure profiles according to claim 1, characterized in that: The cam (24) forms a rotating structure with the frame plate (21) through a rotating rod (23), and the cam (24) is movably connected to the receiving plate (28). The first one-way valve (10) is symmetrically arranged with respect to the central axis of the sleeve (25), and the second one-way valve (11) is symmetrically arranged with respect to the central axis of the sleeve (25).

3. The continuous cutting device for processing steel structure profiles according to claim 1, characterized in that: The sleeve (25) is of slotted design, and the sleeve (25) and the piston (26) form a sliding structure. A spring is fixedly connected to one side of the receiving plate (28), and the spring is sleeved on the outer wall of the movable rod (27).

4. The continuous cutting device for processing steel structure profiles according to claim 1, characterized in that: The outer wall of the sleeve (25) is fixedly connected to a cleaning mechanism (5), and the cleaning mechanism (5) comprises a second air duct (51) fixedly mounted on the top of the sleeve (25), one end of the second air duct (51) is fixedly connected to a sealing insert (52), a rotating shaft (53) is snap-fittedly mounted on the outer wall of the sealing insert (52), a cleaning roller (54) is fixedly connected to the outer wall of the rotating shaft (53), a brush (55) is fixedly connected to the outer wall of the cleaning roller (54), and an air blowing hole (56) is provided inside the cleaning roller (54).

5. The continuous cutting device for processing steel structure profiles according to claim 4, characterized in that: The rotating shaft (53) is of hollow design, and the rotating shaft (53) and the sealing insert (52) form a rotating structure.

6. The continuous cutting device for processing steel structure profiles according to claim 4, characterized in that: The cleaning roller (54) forms a rotating structure with the conveying frame (1) via a rotating shaft (53), and the brushes (55) are arranged in a ring shape with the central axis of the cleaning roller (54) as the center.

7. The continuous cutting device for processing steel structure profiles according to claim 4, characterized in that: A first synchronous wheel (531) is fixedly connected to the outer wall of the rotating shaft (53); a synchronous belt (532) is installed on the outer wall of the first synchronous wheel (531); a second synchronous wheel (533) is installed on the inner wall of the synchronous belt (532); the first synchronous wheel (531) is meshedly connected with the synchronous belt (532); and the synchronous belt (532) is meshedly connected with the second synchronous wheel (533).

8. The continuous cutting device for processing steel structure profiles according to claim 1, characterized in that: The outer wall of the conveying frame (1) is fixedly connected to a feeding mechanism (6), and the feeding mechanism (6) comprises a second motor (61) fixedly mounted on one side of the conveying frame (1); the output shaft of the second motor (61) is fixedly connected to a movable shaft (62) via a coupling; the outer wall of the movable shaft (62) is fixedly connected to a conveying roller (63); the outer wall of the movable shaft (62) is fixedly connected to a gear (64); and the outer wall of the gear (64) is mounted with a toothed belt (65).

9. The continuous cutting device for processing steel structure profiles according to claim 8, characterized in that: The conveying roller (63) forms a rotating structure with the conveying frame (1) through a movable shaft (62), the gear (64) is meshedly connected with the toothed belt (65), and the gears (64) are arranged at equal intervals on the inner wall of the toothed belt (65).

10. A cutting method of a continuous cutting device for processing steel structure profiles, comprising the following steps, characterized in that: S1. Starting the first motor (22) can rotate the cam (24) fixedly connected to one end of the rotating rod (23), so that the cam (24) squeezes the receiving plate (28), driving the piston (26) fixedly connected to one end of the movable rod (27) to slide along the sleeve (25), so that air enters the sleeve (25) through the second one-way valve (11) and is discharged from the first one-way valve (10) as the piston (26) moves. When the piston (26) slides back, the air is discharged through the first one-way valve (10) on the other side, and the discharged air is transported to the purge plate (4) through the first air duct (3). When the steel structure profile is transported through the bottom of the purge plate (4), the dust is blown away; S2. When the air in the sleeve (25) is compressed, it is transported to the rotating shaft (53) installed at one end of the sealing insert (52) through the second air duct (51), and then the air is discharged through the blowing hole (56) opened inside the cleaning roller (54), so as to clean the dust on the steel structure profile; S3. When the movable shaft (62) rotates, the second synchronous wheel (533) can be driven to rotate. Under the action of the synchronous belt (532), the first synchronous wheel (531) can be rotated, so that the rotating shaft (53) rotates, thereby driving the brush (55) fixedly connected to the outer wall of the cleaning roller (54) to clean the steel structure profile; S4. Starting the second motor (61) can cause the movable shaft (62) to rotate, driving the gear (64) to rotate. Under the action of the toothed belt (65), multiple gears (64) can be rotated, thereby driving multiple conveying rollers (63) to rotate, so that the steel structure profile can be stably fed.

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