Laser printer with automatic cleaning device

Abstract

The invention discloses a laser printer with an automatic cleaning device, relates to the technical field of laser printers, and aims to solve the technical problems that the interior of a paper feeding channel is narrow and dust on the inner side wall is inconvenient to clean, the laser printer comprises a printer main body, a dust brushing assembly and a dust suction assembly, and the printer main body comprises the paper feeding channel; the dust collection assembly comprises a dust collection box, a dust collection plate is arranged above the dust collection box, a dust collection channel is formed in the bottom of the dust collection plate, the dust brushing assembly comprises a plurality of brushing plates, a first worm, a second worm and a rotating motor, the multiple brushing plates are connected and fixed through two fixing rods, the fixing rods are sleeved with sliding pieces, the first worm is in meshed connection with a worm wheel, and the worm wheel is coaxially connected with a third gear. The circumferential side wall of the third gear is meshed with a toothed belt, the inner side wall of the toothed belt is meshed with a fourth gear, a sliding block is arranged in a groove in the circumferential side wall of the second worm, and the side wall of the sliding block is connected with a sliding piece. The paper feeding device has the advantage that dust and stains on the inner side wall of the paper feeding channel can be effectively cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of laser printers, and more particularly to a laser printer with an automatic cleaning device. Background Art

[0002] A laser printer is a common printing device that uses laser technology and electrostatic principles to achieve high-quality text and image printing. When it works, the print data sent by the computer is converted into electrical signals to control the emission of the laser beam. The laser beam is irradiated onto a rotating photosensitive drum through a series of optical components, and the surface of the photosensitive drum is selectively exposed according to the print data, so that a "latent image" with static electricity is formed on its surface. Then, toner with an opposite charge to the surface of the photosensitive drum is adsorbed to the exposed area on the photosensitive drum to form a visible toner image. Next, the paper is fed in through the paper feed mechanism and comes into contact with the photosensitive drum. The toner is transferred from the photosensitive drum to the paper under the action of static electricity. Finally, the paper passes through the fixing assembly, and through heating and pressurization, the toner is firmly attached to the paper to complete the printing process. Laser printers have the advantages of fast printing speed, high print quality, high resolution, and low noise. They are suitable for printing a large number of documents and for occasions with high requirements for print quality.

[0003] The paper feed channel of a laser printer is the path that paper takes from a paper box or paper feed tray into the printer until it reaches the printing position. In the process of paper entering the printer, it may carry dust and paper scraps, thereby dirtying the paper feed channel. In addition, the entrance of the paper feed channel is exposed to the outside space, which is easy to enter with dust, causing dust and impurities to adhere to the inner wall of the paper feed channel. Usually, the paper feed channel is cleaned manually, using a rag or a cleaning brush. However, the paper feed channel is relatively narrow and long, which makes it inconvenient to clean the inside. In view of this, we propose a laser printer with an automatic cleaning device. Summary of the invention

[0004] The object of the present invention is to provide a laser printer with an automatic cleaning device to solve the technical problem that the inside of a paper feed channel is narrow and it is inconvenient to clean the dust on the inner wall.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a laser printer with an automatic cleaning device, comprising a printer body, a dust brush assembly and a dust suction assembly;

[0006] The printer body includes a paper feed channel;

[0007] The dust collection assembly comprises a dust collection box arranged on the side wall of the printer body, a dust collection plate is arranged above the dust collection box, and a dust collection channel is arranged at the bottom of the dust collection plate;

[0008] The inner cavity of the dust suction channel is connected to a dust suction pipe 1, the output end of the dust suction pipe 1 is provided with a dust suction fan, the output end of the dust suction fan is connected to a dust suction pipe 2, and the output end of the dust suction pipe 2 is connected to the inside of the dust collecting box;

[0009] The top surface of the dust box is provided with two fixing frames and a motor bracket, the top surface of the fixing frame is connected with a cleaning bracket and a dust suction pipe bracket, and the inner side wall of the cleaning bracket is provided with an arc bin;

[0010] The dust brush assembly comprises a plurality of brush plates arranged in the cleaning bracket, the plurality of brush plates are connected and fixed by two fixing rods, and the fixing rod sleeve is provided with a sliding sheet;

[0011] The dust brush assembly also includes a rotating motor arranged in the motor bracket, the output end of the rotating motor is connected to a gear 1, the output end of the gear 1 is meshed with a gear 2, the side wall of the gear 2 is connected to a rotating shaft, the circumferential side wall of the rotating shaft is rotatably connected to two support blocks, the two ends of the rotating shaft are connected to a worm 1, the worm 1 is meshed with a worm wheel, the worm wheel is coaxially connected to a gear 3, the circumferential side wall of the gear 3 is meshed with a toothed belt, the inner side wall of the toothed belt is meshed with a gear 4, and the side wall of the gear 4 is connected to a worm 2;

[0012] A sliding block is provided in the groove of the two circumferential side walls of the worm, the side walls of the sliding block are connected to the sliding sheet, and the sliding sheet is slidably matched with the two circumferential side walls of the worm through the sliding block;

[0013] The second worm is arranged in the arc bin and is rotatably connected with the cleaning bracket.

[0014] Preferably, a drawer is provided on the side wall of the dust box, and a pull rod is provided on the side wall of the drawer.

[0015] Preferably, the top surface of the dust box is arranged as an inclined surface, and the bottom surface of the fixing frame is arranged as an inclined surface with the same inclination as the top surface of the dust box.

[0016] Preferably, the symmetrical side walls of the brush plate are provided with a plurality of soft bristles, the plurality of brush plates are arranged in an array, and the soft bristles on the side walls of the plurality of brush plates are arranged in a staggered manner.

[0017] Preferably, the other end of the brush plate is connected to the side wall of the dust collecting plate, and the other two symmetrical side walls of the dust collecting plate are provided with soft bristles with the same structure as the side wall of the brush plate.

[0018] Preferably, the shaft of the worm gear is fixed between the dust box and the fixed frame, and the bottoms of the two support blocks are connected to the top surface of the dust box.

[0019] Preferably, a circular ring is provided on the side wall of the dust suction pipe frame, and the dust suction pipe 1 is provided inside the circular ring.

[0020] Preferably, the cleaning support is arranged above the paper feeding channel.

[0021] Preferably, the plurality of brush plates and the dust collecting plates are arranged at the same inclination angle as the paper feed channel, and their shapes are matched with the inner cavity of the paper feed channel.

[0022] Preferably, the method for using a laser printer with an automatic cleaning device comprises the following steps:

[0023] S1. Clean the paper feed channel. Take out the remaining printing paper in the paper feed channel and check whether there are other foreign objects inside the paper feed channel and clean it.

[0024] S2, dust brushing, works by rotating the motor to drive gear one and gear two to rotate, gear two drives the rotating shaft to rotate, the rotating shaft drives the worm ones at both ends to rotate synchronously, further making the two worm ones drive the worm wheels to rotate respectively, the worm wheels drive the coaxially connected gear three to rotate, gear three drives gear four to rotate through the toothed belt, further drives the two worm twos to rotate synchronously, so that the slider moves downward along the groove on the circumferential side wall of the worm two, further making the sliding plate drive multiple brush plates to move into the paper feed channel, at this time, multiple soft hairs on the side wall of the brush plate brush the inner wall of the paper feed channel, brush the dust and stains attached to the inner wall of the paper feed channel to the bottom of the paper feed channel, further by rotating the motor in the opposite direction, drive the brush plate to move upward in the paper feed channel, brush the inner wall of the paper feed channel again, through repeated brushing, the dust and stains on the inner wall of the paper feed channel can be effectively cleaned;

[0025] S3, dust collection, the dust in the paper feed channel is sucked into the dust collection pipe 1 through the dust collection channel at the bottom of the dust collection plate through the dust collection fan, and then guided into the dust collection box through the dust collection pipe 2, so that the dust cleaned by the dust brush assembly can be sucked into the dust collection box in a centralized manner;

[0026] S4. Dust disposal: Pull out the drawer on the side wall of the dust box and clean the dust inside the drawer to facilitate next use.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention works by rotating the motor to drive gear one and gear two to rotate, gear two drives the rotating shaft to rotate, and the rotating shaft drives the worm ones at both ends to rotate synchronously, further making the two worm ones respectively drive the worm wheels to rotate, the worm wheels drive the coaxially connected gear three to rotate, and the gear three drives the gear four to rotate through the toothed belt, further driving the two worm twos to rotate synchronously, so that the slider moves downward along the groove of the circumferential side wall of the worm two, and further making the sliding sheet drive multiple brush plates to move into the paper feed channel. At this time, the brush plate brushes the inner wall of the paper feed channel to brush off the dust and stains attached to the inner wall of the paper feed channel, and further drives the brush plate to move upward in the paper feed channel by rotating the motor in the opposite direction, and brushes the inner wall of the paper feed channel again. Through repeated brushing, the dust and stains on the inner wall of the paper feed channel can be effectively cleaned, thereby solving the problem that the inside of the paper feed channel is narrow and it is inconvenient to clean the dust on the inner wall.

[0029] 2. The present invention also operates the dust suction fan to suck the dust in the paper feed channel into the dust suction pipe 1 through the dust suction channel at the bottom of the dust suction plate, and then guides it into the dust collecting box through the dust suction pipe 2, so that the dust cleaned by the dust brush component can be sucked into the dust collecting box in a concentrated manner, and the dust brush component can be operated synchronously, so that the stains and dust on the inner wall of the paper feed channel can be cleaned while the dust is cleaned out of the paper feed channel, thereby further improving the cleaning effect of the paper feed channel and further solving the problem that dust is easily accumulated in the paper feed channel and is inconvenient to clean.

[0030] 3. The present invention also ensures that the soft bristles on the side walls of multiple brush plates are arranged in a staggered manner, thereby ensuring that the soft bristles have relatively independent activity space, which is conducive to brushing work. At the same time, the staggered arrangement can ensure that the soft bristles can brush the inner wall of the paper feed channel in all directions, further improving the cleaning effect of the dust on the inner wall of the paper feed channel, and further solving the problem of dust accumulation inside the paper feed channel and inconvenience in cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention from a viewing angle;

[0032] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second perspective;

[0033] Figure 3 A schematic diagram of the dust collecting box top structure from a first perspective of the present invention;

[0034] Figure 4 A schematic diagram of the dust box top structure from a second perspective of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the dust brush assembly of the present invention;

[0036] Figure 6 It is a schematic diagram of the brush plate structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the transmission structure of the dust brush assembly of the present invention;

[0038] Figure 8 It is a schematic diagram of the slider structure of the present invention.

[0039] Description of the numbers in the figure:

[0040] 1. Printer body; 2. Dust brush assembly; 3. Dust suction assembly;

[0041] 101. Paper feeding channel;

[0042] 201, brush plate; 202, fixed rod; 203, sliding plate; 204, rotating motor; 205, gear 1; 206, gear 2; 207, rotating shaft; 208, supporting block; 209, worm 1; 210, worm wheel; 211, gear 3; 212, toothed belt; 213, gear 4; 214, worm 2; 215, slider; 216, soft hair;

[0043] 301, dust collecting box; 3011, drawer; 3012, pull rod; 302, dust suction fan; 303, dust suction pipe 2; 304, dust suction pipe 1; 305, dust suction plate; 306, dust suction channel;

[0044] 401, fixing bracket; 402, motor bracket; 403, cleaning bracket; 4031, arc bin; 404, dust suction pipe bracket; 4041, circular ring. DETAILED DESCRIPTION

[0045] like Figures 1 to 8 As shown, the present invention relates to a laser printer with an automatic cleaning device, comprising 1. A laser printer with an automatic cleaning device, characterized in that it comprises a printer body 1, a dust brush assembly 2 and a dust suction assembly 3;

[0046] In an embodiment of the present invention, the printer body 1 includes a paper feed channel 101, and the dust collection component 3 includes a dust collection box 301 arranged on the side wall of the printer body 1. The side wall of the dust collection box 301 is provided with a drawer 3011, and the side wall of the drawer 3011 is provided with a pull rod 3012. By pulling out the drawer 3011 on the side wall of the dust collection box 301, the dust in the drawer 3011 is cleaned up for the next use. A dust collection plate 305 is arranged above the dust collection box 301, and a dust collection channel 306 is arranged at the bottom of the dust collection plate 305. The inner cavity of the dust collection channel 306 is connected to a dust collection pipe 304, and a dust collection fan 302 is arranged at the output end of the dust collection pipe 304. The dust collection fan 302 is provided at the output end of the dust collection pipe 304. The output end of 02 is connected with a dust suction pipe 2 303, and the output end of the dust suction pipe 2 303 is connected to the inside of the dust box 301. The top surface of the dust box 301 is provided with two fixing frames 401 and a motor bracket 402. The top surface of the fixing frame 401 is connected with a cleaning bracket 403 and a dust suction pipe bracket 404. The inner side wall of the cleaning bracket 403 is provided with an arc bin 4031. The side wall of the dust suction pipe bracket 404 is provided with a ring 4041. The dust suction pipe 1 304 is provided in the ring 4041. The dust brush assembly 2 includes a plurality of brush plates 201 arranged in the cleaning bracket 403. The plurality of brush plates 201 are connected and fixed by two fixing rods 202. The fixing rods 202 are sleeved with a sliding sheet 203.

[0047] The dust brush assembly 2 also includes a rotating motor 204 disposed in the motor bracket 402, the output end of the rotating motor 204 is connected to a gear 1 205, the output end of the gear 1 205 is meshed with a gear 206, the side wall of the gear 206 is connected to a rotating shaft 207, the circumferential side wall of the rotating shaft 207 is rotatably connected to two support blocks 208, the two ends of the rotating shaft 207 are connected to a worm 1 209, the worm 1 209 is meshed with a worm wheel 210, and the worm wheel 210 is coaxially connected to a gear 3 2 11. The circumferential side wall of gear three 211 is meshed with a toothed belt 212, the inner side wall of the toothed belt 212 is meshed with a gear four 213, the side wall of gear four 213 is connected to a worm two 214, a slider 215 is provided in the groove of the circumferential side wall of the worm two 214, the side wall of the slider 215 is connected to the sliding piece 203, the sliding piece 203 is slidably matched with the circumferential side wall of the worm two 214 through the slider 215, and the worm two 214 is provided in the arc bin 4031 and is rotatably connected to the cleaning bracket 403;

[0048] The present invention works by rotating the motor 204, driving the gear 1 205 and the gear 2 206 to rotate, the gear 206 drives the rotating shaft 207 to rotate, the rotating shaft 207 drives the worm 1 209 at both ends to rotate synchronously, further making the two worm 1s 209 drive the worm wheel 210 to rotate respectively, the worm wheel 210 drives the coaxially connected gear 3 211 to rotate, the gear 3 211 drives the gear 4 213 to rotate through the toothed belt 212, further driving the two worm 2s 214 to rotate synchronously, so that the slider 215 is rotated along the circumferential side of the worm 214. The groove of the wall moves downward, further causing the sliding sheet 203 to drive the multiple brush plates 201 to move into the paper feed channel 101. At this time, the brush plates 201 brush the inner wall of the paper feed channel 101 to brush off the dust and stains attached to the inner wall of the paper feed channel 101. The motor 204 is further rotated in the reverse direction to drive the brush plates 201 to move upward in the paper feed channel 101, and the inner wall of the paper feed channel 101 is brushed again. Through repeated brushing, the dust and stains on the inner wall of the paper feed channel 101 can be effectively cleaned;

[0049] The present invention also operates the dust suction fan 302 to suck the dust in the paper feed channel 101 into the dust suction pipe 1 304 through the dust suction channel 306 at the bottom of the dust suction plate 305, and then guides it into the dust collecting box 301 through the dust suction pipe 2 303, so that the dust cleaned by the dust brush component 2 can be sucked into the dust collecting box 301 in a concentrated manner, and the dust brush component 2 can be operated synchronously, so that the stains and dust on the inner wall of the paper feed channel 101 can be cleaned while the dust is cleaned out of the paper feed channel 101, thereby further improving the cleaning effect of the paper feed channel 101.

[0050] As another embodiment of the present invention, the top surface of the dust box 301 is set as an inclined surface, the bottom surface of the fixing frame 401 is set as an inclined surface with the same inclination as the top surface of the dust box 301, the axis of the worm wheel 210 is fixed between the dust box 301 and the fixing frame 401, the bottoms of the two support blocks 208 are connected to the top surface of the dust box 301, the cleaning bracket 403 is set above the paper feed channel 101, and multiple brush plates 201 and dust suction plates 305 are set at the same inclination angle as the paper feed channel 101, and the shape is matched with the inner cavity of the paper feed channel 101, which is convenient for entering and exiting the inner cavity of the paper feed channel 101. By setting the top surface of the dust box 301 as an inclined surface, it is ensured that the worm wheel 210 has an inclination angle, which can cooperate with the worm 214 in the arc bin 4031 on the side wall of the cleaning bracket 403 to perform transmission work.

[0051] As another embodiment of the present invention, a plurality of soft bristles 216 are provided on the symmetrical side walls of the brush plate 201, and the plurality of brush plates 201 are arranged in an array, and the soft bristles 216 on the side walls of the plurality of brush plates 201 are arranged in a staggered manner, and the other end of the brush plate 201 is connected to the side wall of the dust collecting plate 305, and the other two symmetrical side walls of the dust collecting plate 305 are provided with soft bristles 216 with the same structure as the side walls of the brush plate 201. The present invention ensures that the soft bristles 216 have relatively independent activity space by designing the soft bristles 216 on the side walls of the plurality of brush plates 201 to be arranged in a staggered manner, which is conducive to the brushing work. At the same time, the staggered arrangement can ensure that the soft bristles 216 brush the inner wall of the paper feed channel 101 in all directions, thereby further improving the cleaning effect of the dust on the inner wall of the paper feed channel 101.

[0052] Working principle: This embodiment provides a laser printer with an automatic cleaning device. When in use, the remaining printing paper in the paper feed channel 101 is taken out, and whether there are other foreign objects in the paper feed channel 101 is checked and cleaned. The motor 204 is rotated to drive the gear 1 205 and the gear 2 206 to rotate, and the gear 2 206 drives the shaft 207 to rotate. The shaft 207 drives the worm 1 209 at both ends to rotate synchronously, and further makes the two worm 1s 209 respectively drive the worm wheel 210 to rotate, and the worm wheel 210 drives the coaxially connected gear 3 211 to rotate, and the gear 3 211 drives the gear 4 213 to rotate through the toothed belt 212, and further drives the two worm 2s 214 to rotate synchronously, so that the slider 215 moves downward along the groove of the circumferential side wall of the worm 2 214, and further makes the sliding sheet 203 drive multiple brush plates 201 to move into the paper feed channel 101. At this time, the brush plates 20 The multiple soft bristles 216 on the side wall of the paper feeding channel 101 brush the inner wall of the paper feeding channel 101, and the dust and stains attached to the inner wall of the paper feeding channel 101 are brushed off to the bottom of the paper feeding channel 101. The motor 204 is further rotated in the opposite direction to drive the brush plate 201 to move upward in the paper feeding channel 101, and the inner wall of the paper feeding channel 101 is brushed again. Through repeated brushing, the dust and stains on the inner wall of the paper feeding channel 101 can be effectively cleaned. The dust suction fan 302 works to suck the dust in the paper feeding channel 101 into the dust suction pipe 1 304 through the dust suction channel 306 at the bottom of the dust suction plate 305, and then guide it into the dust collecting box 301 through the dust suction pipe 2 303, so that the dust cleaned by the dust brush assembly 2 can be sucked into the dust collecting box 301 in a concentrated manner. By pulling out the drawer 3011 on the side wall of the dust collecting box 301, the dust in the drawer 3011 is cleaned, which is convenient for next use.

[0053] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A laser printer with an automatic cleaning device, characterized in that: It comprises a printer body (1), a dust brushing component (2) and a dust suction component (3); The printer body (1) comprises a paper feed channel (101); The dust collection assembly (3) comprises a dust collection box (301) arranged on the side wall of the printer body (1), a dust collection plate (305) is arranged above the dust collection box (301), and a dust collection channel (306) is arranged at the bottom of the dust collection plate (305); The inner cavity of the dust suction channel (306) is connected to a dust suction pipe 1 (304), the output end of the dust suction pipe 1 (304) is provided with a dust suction fan (302), the output end of the dust suction fan (302) is connected to a dust suction pipe 2 (303), and the output end of the dust suction pipe 2 (303) is connected to the interior of the dust collecting box (301); The top surface of the dust collecting box (301) is provided with two fixing frames (401) and a motor bracket (402); the top surface of the fixing frame (401) is connected with a cleaning bracket (403) and a dust suction pipe bracket (404); and the inner side wall of the cleaning bracket (403) is provided with an arc bin (4031); The dust brush assembly (2) comprises a plurality of brush plates (201) arranged in the cleaning bracket (403); the plurality of brush plates (201) are connected and fixed via two fixing rods (202); and the fixing rods (202) are sleeved with sliding sheets (203); The dust brush assembly (2) also includes a rotating motor (204) arranged in the motor bracket (402), the output end of the rotating motor (204) is connected to a gear 1 (205), the output end of the gear 1 (205) is meshed with a gear 2 (206), the side wall of the gear 2 (206) is connected to a rotating shaft (207), the circumferential side wall of the rotating shaft (207) is rotatably connected to two support blocks (208), the two ends of the rotating shaft (207) are connected to a worm 1 (209), the worm 1 (209) is meshed with a worm wheel (210), the worm wheel (210) is coaxially connected to a gear 3 (211), the circumferential side wall of the gear 3 (211) is meshed with a toothed belt (212), the inner side wall of the toothed belt (212) is meshed with a gear 4 (213), and the side wall of the gear 4 (213) is connected to a worm 2 (214); A sliding block (215) is provided in the groove of the circumferential side wall of the second worm gear (214); the side wall of the sliding block (215) is connected to the sliding plate (203); and the sliding plate (203) is slidably matched with the circumferential side wall of the second worm gear (214) through the sliding block (215); The second worm gear (214) is disposed in the arc bin (4031) and is rotationally connected to the cleaning bracket (403).

2. The laser printer with an automatic cleaning device according to claim 1, characterized in that: The side wall of the dust box (301) is provided with a drawer (3011), and the side wall of the drawer (3011) is provided with a pull rod (3012).

3. The laser printer with an automatic cleaning device according to claim 2, characterized in that: The top surface of the dust box (301) is arranged as an inclined surface, and the bottom surface of the fixing frame (401) is arranged as an inclined surface with the same inclination as the top surface of the dust box (301).

4. The laser printer with an automatic cleaning device according to claim 3, characterized in that: A plurality of soft bristles (216) are arranged on the symmetrical side walls of the brush plate (201); the plurality of brush plates (201) are arranged in an array; and the soft bristles (216) on the side walls of the plurality of brush plates (201) are arranged in a staggered manner.

5. The laser printer with an automatic cleaning device according to claim 4, characterized in that: The other end of the brush plate (201) is connected to the side wall of the dust collecting plate (305), and the other two symmetrical side walls of the dust collecting plate (305) are provided with soft bristles (216) having the same structure as the side walls of the brush plate (201).

6. The laser printer with an automatic cleaning device according to claim 5, characterized in that: The shaft of the worm wheel (210) is fixed between the dust box (301) and the fixing frame (401), and the bottoms of the two support blocks (208) are connected to the top surface of the dust box (301).

7. The laser printer with an automatic cleaning device according to claim 6, characterized in that: The side wall of the dust suction pipe frame (404) is provided with a circular ring (4041), and the dust suction pipe 1 (304) is arranged inside the circular ring (4041).

8. The laser printer with an automatic cleaning device according to claim 7, characterized in that: The cleaning support (403) is arranged above the paper feeding channel (101).

9. The laser printer with an automatic cleaning device according to claim 8, characterized in that: The plurality of brush plates (201) and the dust collecting plates (305) are arranged at the same inclination angle as the paper feeding channel (101), and their shapes are matched with the inner cavity of the paper feeding channel (101).

10. The method for using a laser printer with an automatic cleaning device according to claim 9, characterized in that: The following steps are involved: S1, cleaning the paper feed channel, taking out the remaining printing paper in the paper feed channel (101), checking whether there are other foreign objects in the paper feed channel (101), and cleaning it; S2, dust brushing, by rotating the motor (204), driving the gear 1 (205) and the gear 2 (206) to rotate, the gear 2 (206) drives the rotating shaft (207) to rotate, the rotating shaft (207) drives the worm 1 (209) at both ends to rotate synchronously, further making the two worm 1s (209) respectively drive the worm wheel (210) to rotate, the worm wheel (210) drives the coaxially connected gear 3 (211) to rotate, the gear 3 (211) drives the gear 4 (213) to rotate through the toothed belt (212), further driving the two worm 2s (214) to rotate synchronously, so that the slider (215) moves along the groove of the circumferential side wall of the worm 2 (214) to The sliding sheet (203) further drives the plurality of brush plates (201) to move into the paper feed channel (101). At this time, the plurality of soft hairs (216) on the side wall of the brush plate (201) brush the inner wall of the paper feed channel (101), and the dust and stains attached to the inner wall of the paper feed channel (101) are brushed off to the bottom of the paper feed channel (101). The motor (204) is further rotated in the reverse direction to drive the brush plate (201) to move upward in the paper feed channel (101), and the inner wall of the paper feed channel (101) is brushed again. Through repeated brushing, the dust and stains on the inner wall of the paper feed channel (101) can be effectively cleaned; S3, dust collection, the dust collection fan (302) works to suck the dust in the paper feeding channel (101) into the dust collection pipe 1 (304) through the dust collection channel (306) at the bottom of the dust collection plate (305), and then guides the dust into the dust collection box (301) through the dust collection pipe 2 (303), so that the dust cleaned by the dust brush assembly (2) can be sucked into the dust collection box (301) in a centralized manner; S4, dust disposal, by pulling out the drawer (3011) on the side wall of the dust box (301), cleaning the dust in the drawer (3011) for convenience of next use.

Images