Cleaning knife integrated cleaning assembly

Abstract

The utility model relates to the technical field of printing equipment cleaning, in particular to a cleaning knife integrated cleaning assembly which comprises a mounting plate, the mounting plate is connected into a printer, the front end of the mounting plate is rotationally connected with a scraper, the scraper is used for cleaning carbon powder on the surface of a developing roller, a motor is mounted in the scraper, and a reciprocating lead screw is rotationally connected into the scraper. The end of the reciprocating lead screw is connected with an output shaft of the motor, the two ends of the scraper are slidably connected with collecting boxes, the top face of the scraper is slidably connected with a scraper, the scraper is in threaded connection with the reciprocating lead screw, openings are formed in the tops of the collecting boxes, and the stroke of the scraper is located between the separated ends of the two openings. A protection assembly for adjusting the matching angle of the mounting plate and the scraper is arranged at the joint of the mounting plate and the scraper. The reciprocating lead screw is driven by the motor to rotate to drive the scraper to do reciprocating rectilinear motion along the top surface of the scraper, so that residual carbon powder falls into the collecting box, the function of automatically removing the carbon powder on the top surface of the scraper is realized, the frequency of manual disassembly and cleaning is reduced, and the purpose of reducing the maintenance cost is achieved.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment cleaning technology, and in particular to an integrated cleaning component with a cleaning blade. Background Technology

[0002] As a core device for modern office work and information output, the image quality and operational stability of printers directly depend on the precise coordination of their internal key components. In laser printing technology, the developing roller is the core component responsible for evenly transferring toner onto the surface of the photosensitive drum, and its surface cleanliness directly affects the clarity and color gradation of the printed images. The cleaning blade, as a complementary component to the developing roller, removes residual toner from the surface of the developing roller through physical contact, and is a crucial auxiliary structure for maintaining the continuous and efficient operation of the printing system.

[0003] In existing technologies, cleaning blades are typically made of elastic metal sheets or polymer materials. Their working surface maintains linear contact with the developing roller surface, scraping away any residual toner that hasn't been transferred after printing. The removed toner then falls into a waste container at the bottom of the printer under gravity, completing the cleaning process.

[0004] However, in actual use, there is a gap between the bottom of the traditional cleaning blade and the printer body. This makes the scraped toner susceptible to vibration or airflow interference during its fall. Some toner does not completely enter the waste container but instead drifts to other areas inside the device. Due to the lack of an effective cleaning mechanism, the top surface of the cleaning blade is prone to forming a residue layer due to electrostatic adsorption or toner adhesion after long-term use. This not only reduces scraping efficiency but may also cause uneven stress on the surface of the developing roller due to toner accumulation, resulting in printing streaks or color spots. Once these problems are discovered, the device casing must be disassembled manually and the cleaning blade must be cleaned manually, which significantly increases equipment maintenance costs and downtime. Utility Model Content

[0005] To overcome the drawbacks of relying on manual maintenance, this invention provides an integrated cleaning component for cleaning knives, aiming to solve the aforementioned shortcomings.

[0006] An integrated cleaning component for a cleaning blade includes a mounting plate connected to a printer. A scraper is rotatably connected to the front end of the mounting plate. The scraper is used to clean toner from the surface of a developing roller. A motor is installed inside the scraper, and a reciprocating screw is rotatably connected inside the scraper. The end of the reciprocating screw is connected to the output shaft of the motor. Collection boxes are slidably connected to both ends of the scraper. A scraper blade is slidably connected to the top surface of the scraper. The scraper blade is threadedly connected to the reciprocating screw. An opening is provided at the top of the collection box. The stroke of the scraper blade is located between the two disjoint ends of the opening. A protective component is provided at the connection between the mounting plate and the scraper to adjust the engagement angle between the mounting plate and the scraper.

[0007] To further explain, the protective component includes a gear rod, with gear rings connected to both the left and right ends of the front side of the mounting plate. A spline is connected to the rotating shaft ends of the mounting plate and the scraper. The gear rod is slidably connected to the rear end of the scraper. The right end of the gear rod is keyed to the mounting plate. A spring is provided inside the right end of the gear rod, with one end connected to the gear rod and the other end connected to the spline. The gear rod meshes with the gear rings.

[0008] To further explain, the collection box is connected to a pin on the side facing the collection box, and the scraper has corresponding round holes on its left and right sides. The pin is slidably connected to the scraper, and the pin is interference-fitted with the round holes.

[0009] To further explain, the gear rod has a cross groove at its left end and a sealing plug at its right end.

[0010] To further explain, a distance detector is installed inside the top plate of the collection box, and the distance detector is used to detect the height of toner accumulation inside the collection box.

[0011] To further explain, a photosensitive detector is embedded in the top surface of the scraper.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The motor drives the reciprocating screw to rotate, which in turn drives the scraper to move in a reciprocating linear motion along the top surface of the scraper. Combined with the special design of the inclined surfaces on both sides of the scraper and the through hole in the middle, the residual toner falls into the collection box, thereby realizing the automatic removal function of toner from the top surface of the scraper, reducing the frequency of manual disassembly and cleaning, and achieving the purpose of reducing maintenance costs.

[0014] 2. Through the meshing of the gear rod and gear ring in the protective assembly, as well as the elastic reset mechanism of the spring and spline, the contact angle between the doctor blade and the developing roller can be precisely adjusted and self-locked, improving operational safety and efficiency.

[0015] 3. A photosensitive detector embedded in the top surface of the scraper monitors the surface toner coverage in real time. When the coverage reaches a preset threshold, a cleaning signal light is triggered. At the same time, a distance detector monitors the toner accumulation height in the collection box. When the height reaches the cleaning threshold, a cleaning signal light is triggered. This enables intelligent monitoring and early warning of the equipment status, reducing the need for regular manual inspections and making maintenance operations more targeted. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the motor and reciprocating lead screw of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the gear rod, gear ring, and spline of this utility model.

[0019] The markings in the attached diagram are: 1: mounting plate, 2: scraper, 3: motor, 4: reciprocating lead screw, 5: scraper, 6: collection box, 7: pin, 8: gear rod, 9: gear ring, 10: spring, 11: spline, 12: sealing plug, 13: distance detector, 14: photosensitive detector. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0021] Example: An integrated cleaning component for cleaning knives, such as Figures 1-3 As shown, the system includes a mounting plate 1, a scraper 2, a motor 3, a reciprocating screw 4, a scraper blade 5, a collection box 6, and protective components. The mounting plate 1 is connected to the inside of the printer. The scraper blade 2 is rotatably connected to the front end of the mounting plate 1. The scraper blade 2 is used to clean the toner on the surface of the developing roller. The length of the end of the scraper blade 2 away from the mounting plate 1 is greater than the length of the developing roller to ensure comprehensive cleaning coverage. The motor 3 is installed inside the scraper blade 2, and the reciprocating screw 4 is rotatably connected inside the scraper blade 2. The end of the reciprocating screw 4 is connected to the output shaft of the motor 3. The collection box 6 is slidably connected to both ends of the scraper blade 2. The top surface of the scraper 2 is slidably connected to the scraper 5, which is threadedly connected to the reciprocating screw 4. The speed of the motor 3 is set to 50-100 r / min to ensure the efficiency of toner pushing and to prevent toner from flying due to excessive speed. The scraper 5 has inclined surfaces on both sides and a through hole in the middle. The top of the collection box 6 has an opening, and the through hole overlaps with the opening. The stroke of the scraper 5 is between the two ends of the opening. A protective component is provided at the connection between the mounting plate 1 and the scraper 2 to adjust the angle of the mounting plate 1 and the scraper 2.

[0022] like Figure 2 and Figure 3 As shown, the protective assembly includes a gear rod 8, a gear ring 9, a spring 10, and a spline 11. The gear ring 9 is connected to both the left and right ends of the front side of the mounting plate 1. The spline 11 is connected to the rotating shaft ends of the mounting plate 1 and the scraper 2. The gear rod 8 is slidably connected to the rear end of the scraper 2. The right end of the gear rod 8 is keyed to the mounting plate 1. A spring 10 is installed inside the right end of the gear rod 8. One end of the spring 10 is connected to the gear rod 8, and the other end is connected to the spline 11. The gear rod 8 meshes with the gear ring 9 to ensure that the scraper 2 is away from the developing roller during cleaning, preventing toner from falling back and contaminating it.

[0023] like Figure 2As shown, it also includes a pin 7. The pin 7 is connected to the side of the collection box 6 facing the collection box 6. The scraper 2 has corresponding round holes on the left and right sides. The pin 7 is slidably connected to the scraper 2, and the pin 7 is interference-fitted with the round hole. The interference fit ensures that the collection box 6 is fixed and reliable.

[0024] like Figure 1 As shown, it also includes a sealing plug 12. A cross groove is opened at the left end of the gear rod 8, and a sealing plug 12 is provided at the right end of the gear rod 8. The sealing plug 12 prevents carbon powder from entering the cross groove of the gear rod 8.

[0025] like Figure 2 As shown, it also includes a distance detector 13. The distance detector 13 is installed in the top plate of the collection box 6. The distance detector 13 is used to detect the toner accumulation height in the collection box 6. The printer is equipped with a cleaning indicator light connected to the distance detector 13. The cleaning threshold triggered by the distance detector 13 is set to 2 / 3 of the height of the collection box 6.

[0026] like Figure 2 As shown, it also includes a photosensitive detector 14. The photosensitive detector 14 is embedded in the top surface of the scraper 2. The printer is equipped with a cleaning indicator light connected to the photosensitive detector 14. The coverage cleaning threshold of the photosensitive detector 14 is set to 50-70%.

[0027] The user pushes the two collection boxes 6 into the grooves on both sides of the scraper 2, achieving a secure connection through the interference fit between the pins 7 and the round holes on the side wall of the scraper 2. Then, the mounting plate 1 is fixed in the preset position inside the printer, and the end of the scraper 2 is adjusted to make slight contact with the surface of the developing roller. The bottom side of the scraper 2 continuously scrapes away residual toner from the roller surface through linear contact, with most of the toner falling into the waste box under gravity. However, some toner adheres to the edge of the scraper 2, causing slight deformation at the edge. The toner gradually accumulates and covers the surface of the photosensitive detector 14 embedded in the top surface of the scraper 2. When the toner coverage on the surface of the photosensitive detector 14 reaches the preset cleaning threshold, the resistance change of its internal photosensitive element triggers the circuit to conduct, illuminating the cleaning indicator light on the printer's operation panel, prompting the user to perform a cleaning operation.

[0028] The user must first open the side maintenance cover of the printer, use tweezers to pick up and remove the sealing plug 12, then insert a Phillips screwdriver into the Phillips groove at the left end of the gear rod 8 and push the gear rod 8 axially, causing the spline 11 at its right end to slide along the axis of the mounting plate 1 and compress the spring 10. At the same time, the gear rod 8 disengages from the gear ring 9. While keeping the screwdriver inserted, rotate the gear rod 8. Through the spline 11, the scraper 2 will rotate around the axis. Adjust the distance between the scraper 2 and the developing roller to a safe position and tilt the scraper 2 to ensure that toner does not fall back onto the surface of the developing roller during cleaning. After starting the motor 3, its output shaft drives the reciprocating screw 4 to rotate. The reciprocating screw 4 drives the scraper 5 to reciprocate linearly along the top surface of the scraper 2 through threaded transmission. The sloping design on both sides of the scraper 5 causes the toner to gather towards the center during the pushing process. When there is a large amount of toner, it gathers through the through hole in the center of the scraper 5 and falls down after the through hole aligns with the opening of the collection box 6. If there is a small amount of toner, it is directly pushed to the top opening of the collection box 6 and eventually falls into the collection box 6. After cleaning, turn off the motor 3, rotate the Phillips screwdriver in the opposite direction to reset the gear rod 8, remove the Phillips screwdriver, and the spring 10 pushes the spline 11 to spring back, and the gear rod 8 re-engages with the gear ring 9, restricting the rotational freedom of the scraper 2. Finally, press the sealing plug 12 into the Phillips groove on the left end of the gear rod 8 to prevent toner from entering and causing mechanical jamming.

[0029] When the distance detector 13 detects in real time that the toner accumulation height in the collector 6 reaches the preset cleaning threshold, the infrared beam it emits is blocked by the toner, causing a change in the intensity of the reflected signal, triggering the printer control module to illuminate the cleaning indicator light on the operation panel. The user needs to open the top cover of the printer, remove the mounting plate 1 as a whole, then pull the collector 6 to disengage the pin 7 from the side wall of the scraper 2, remove the collector 6, and empty the toner inside. During this process, it is recommended to manually clean the top surface of the scraper 2 and the surface of the scraper blade 5 using a soft brush. After cleaning, reinstall the collector 6 into the scraper 2 groove, ensuring that the pin 7 is fully embedded in the round hole, and finally re-fix the mounting plate 1 inside the printer. By regularly alternating between automatic cleaning and manual maintenance, the lifespan of components can be effectively extended and print quality stability can be guaranteed.

[0030] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A cleaning razor integrated cleaning assembly characterized by: The system includes a mounting plate (1) connected to the printer. A scraper (2) is rotatably connected to the front end of the mounting plate (1). The scraper (2) is used to clean the toner on the surface of the developing roller. A motor (3) is installed inside the scraper (2). A reciprocating screw (4) is rotatably connected inside the scraper (2). The end of the reciprocating screw (4) is connected to the output shaft of the motor (3). A collection box (6) is slidably connected to both ends of the scraper (2). A scraper plate (5) is slidably connected to the top surface of the scraper (2). The scraper plate (5) is threadedly connected to the reciprocating screw (4). An opening is provided on the top of the collection box (6). The stroke of the scraper plate (5) is located between the two opening ends. A protective component is provided at the connection between the mounting plate (1) and the scraper (2) to adjust the mating angle of the mounting plate (1) and the scraper (2).

2. The integrated cleaning assembly of claim 1, wherein: The protective assembly includes a gear rod (8), and gear rings (9) are connected to both the left and right ends of the front side of the mounting plate (1). Splines (11) are connected to the rotating shaft ends of the mounting plate (1) and the scraper (2). The gear rod (8) is slidably connected to the rear end of the scraper (2). The right end of the gear rod (8) is keyed to the mounting plate (1). A spring (10) is provided inside the right end of the gear rod (8). One end of the spring (10) is connected to the gear rod (8), and the other end is connected to the spline (11). The gear rod (8) meshes with the gear rings (9).

3. The integrated cleaning assembly of claim 2, wherein: The collection box (6) is connected to a pin (7) on one side facing the collection box (6). The scraper (2) has corresponding round holes on its left and right sides. The pin (7) is slidably connected to the scraper (2), and the pin (7) is interference-fitted with the round hole.

4. The integrated cleaning assembly of claim 3, wherein: The gear rod (8) has a cross groove at its left end and a sealing plug (12) at its right end.

5. The integrated cleaning assembly of claim 4, wherein: A distance detector (13) is installed inside the top plate of the collection box (6), and the distance detector (13) is used to detect the height of carbon powder accumulation inside the collection box (6).

6. A cleaning blade integrated cleaning assembly according to claim 5, wherein: A photosensitive detector (14) is embedded in the top surface of the scraper (2).

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