Cleaning scraper for printer powder box

Abstract

The utility model relates to the technical field of printers, and discloses a cleaning scraper for a printer powder box, which comprises a photosensitive drum and a cleaning frame, the cleaning frame is internally provided with a cleaning cavity, the inner wall of the cleaning cavity is provided with two symmetrically distributed mounting frames, the mounting frames are provided with limiting rods, and the limiting rods are slidably connected with guide blocks. The guide block is fixedly connected with the moving frame, and a waste box is arranged at the bottom of the cleaning frame. According to the photosensitive drum cleaning device, residual carbon powder on the photosensitive drum is cleaned through the arranged cleaning mechanisms, and when a large amount of carbon powder is attached to the scrapers of the cleaning mechanisms, the scrapers which are originally in contact with the photosensitive drum retreat into the cleaning cavity through the switching mechanism, and the scrapers of the other cleaning mechanism start to be in contact with the photosensitive drum; at the moment, the carbon powder attached to the surface of the scraper can be powerfully sucked through the annular ventilation frame and the material suction opening, and the carbon powder sucked from the scraper is fed into the waste material box to be stored.

Description

TECHNICAL FIELD

[0001] The utility model relates to a printer technology field, concretely is a kind of clean doctor for printer powder box. BACKGROUND

[0002] Printer powder box is the component for storing and supplying toner in laser printer and copying machine.Toner is a kind of powder composed of plastic particles, pigment and magnetic material, used to form image and text on paper.Main components: toner cartridge, photosensitive drum, doctor and waste powder bin, wherein doctor is used to remove toner not transferred on photosensitive drum, to keep photosensitive drum clean.

[0003] In prior art, Chinese patent publication No.CN219302879U discloses a clean doctor for printer powder box, by setting first doctor assembly, second doctor assembly and third doctor assembly, it has three doctors, which can better scrape off carbon powder on the surface of photosensitive drum.Although prior art can better scrape off carbon powder on photosensitive drum by setting three doctors, with the use of doctor, a large amount of carbon powder will also adhere to the surface of doctor, thereby affecting its cleaning effect on carbon powder on photosensitive drum, therefore, a clean doctor for printer powder box is proposed by those skilled in the art to solve the problems raised in the above background. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a clean doctor for printer powder box to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A clean doctor for printer powder box, comprising photosensitive drum and cleaning rack, cleaning cavity is opened in cleaning rack, two symmetrical installation racks are installed on the inner wall of cleaning cavity, limit rod is installed on installation rack, limit rod is connected with guide block in sliding mode, guide block is fixedly connected with moving frame, waste box is arranged at the bottom of cleaning cavity, further comprising:

[0007] Cleaning mechanism, the cleaning mechanism comprises knife rack connected with moving frame, knife rack is connected with doctor in sliding mode, elastic member connected with doctor is arranged in knife rack, the cleaning mechanism is used for cleaning residual carbon powder on photosensitive drum;

[0008] Conversion mechanism, the conversion mechanism is arranged in cleaning cavity, and is used for realizing transposition of two cleaning mechanisms;

[0009] Two annular ring-shaped ventilation racks are installed in cleaning cavity, a plurality of suction heads are installed on the inner wall of ring-shaped ventilation rack, and guide pipe is connected between two ring-shaped ventilation racks.

[0010] As a further embodiment of this utility model: the elastic element includes a sliding plate that is slidably disposed on the inner wall of the blade holder, the sliding plate being connected to the scraper, and a spring connected to the sliding plate is also disposed inside the blade holder.

[0011] As a further embodiment of this utility model: the conversion mechanism includes a rotating shaft rotatably disposed in the cleaning chamber and located in the middle of the two movable frames, a gear is mounted on the rotating shaft, racks that mesh with the gear are provided at the near ends of the two movable frames, and a motor connected to the rotating shaft is mounted on the outer wall of the cleaning frame.

[0012] As a further embodiment of this utility model: the waste box is provided with a waste chamber, the waste chamber is connected to the annular ventilation frame through a conveying pipe, the cleaning frame is provided with a suction pump connected to the waste chamber, and the waste chamber is provided with a filter screen.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a cleaning mechanism to clean the residual toner on the photosensitive drum, and the cleaned toner falls into the groove at the top of the waste box for collection. When a large amount of toner adheres to the scraper of the cleaning mechanism, the switching mechanism causes the scraper that was originally in contact with the photosensitive drum to retract into the cleaning chamber, while the scraper of another cleaning mechanism begins to contact the photosensitive drum. At this time, the toner adhering to the surface of the scraper can be strongly sucked up by the annular ventilation frame and the suction port, and the toner sucked up from the scraper is sent into the waste box for storage. By rotating the scrapers on the cleaning mechanism, the residual toner on the photosensitive drum can be continuously cleaned, and the toner adhering to the scraper can be cleaned in a concentrated manner, maintaining the cleaning effect of the scraper on the residual toner on the photosensitive drum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a cleaning scraper for a printer toner cartridge.

[0015] Figure 2 This is a cross-sectional view of the interior of the cleaning frame in a cleaning scraper for a printer toner cartridge.

[0016] Figure 3 This is a cross-sectional view of the interior of the blade holder in a cleaning scraper for a printer toner cartridge.

[0017] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0018] In the figure: 1, photosensitive drum; 2, cleaning frame; 3, cleaning cavity; 4, mounting frame; 5, limiting rod; 6, guide block; 7, moving frame; 8, knife holder; 9, sliding plate; 10, spring; 11, scraper; 12, rotating shaft; 13, gear; 14, rack; 15, motor; 16, annular ventilation frame; 17, suction head; 18, material guide pipe; 19, material conveying pipe; 20, waste box; 21, waste cavity; 22, filter screen; 23, suction pump. DETAILED DESCRIPTION

[0019] The technical scheme of the patent will be further described in detail in combination with specific embodiments.

[0020] Please refer to Figures 1-4 A cleaning scraper for a printer toner cartridge, comprising a photosensitive drum 1 and a cleaning frame 2, a cleaning cavity 3 is formed in the cleaning frame 2, two symmetrically distributed mounting frames 4 are mounted on the inner wall of the cleaning cavity 3, limiting rods 5 are mounted on the mounting frames 4, the limiting rods 5 are slidingly connected with guide blocks 6, the guide blocks 6 are fixedly connected with moving frames 7, and a waste box 20 is arranged at the bottom of the cleaning cavity 3.

[0021] A cleaning mechanism, the cleaning mechanism comprises a knife holder 8 connected with the moving frame 7, the knife holder 8 is slidingly connected with a scraper 11, an elastic member connected with the scraper 11 is arranged in the knife holder 8, and the cleaning mechanism is used for cleaning residual toner on the photosensitive drum 1.

[0022] A switching mechanism, the switching mechanism is arranged in the cleaning cavity 3 and is used for switching the two cleaning mechanisms.

[0023] Two annular ventilation frames 16 are mounted in the cleaning cavity 3, a plurality of suction heads 17 are mounted on the inner wall of the annular ventilation frame 16, and a material guide pipe 18 is connected between the two annular ventilation frames 16.

[0024] The residual toner on the photosensitive drum 1 is cleaned by the cleaning mechanism, and the cleaned toner falls into the groove at the top of the waste box 20, so that the toner is collected, and when a large amount of toner is attached to the scraper 11 of the cleaning mechanism, the scraper 11 originally in contact with the photosensitive drum 1 is retracted into the cleaning cavity 3 by the switching mechanism, and the scraper 11 of the other cleaning mechanism starts to contact the photosensitive drum 1, at this time, the toner attached to the surface of the scraper 11 can be strongly sucked by the annular ventilation frame 16 and the suction port, and the toner sucked from the scraper 11 is sent into the waste box 20 for storage, and the scraper 11 is alternately switched by the cleaning mechanism, so that the residual toner on the photosensitive drum 1 can be continuously cleaned, and the toner attached to the scraper 11 can be concentratedly cleaned, so that the cleaning effect of the scraper 11 on the residual toner on the photosensitive drum 1 is maintained.

[0025] In one case of the embodiment, the elastic member comprises a sliding plate 9 slidingly arranged on the inner wall of the knife holder 8, the sliding plate 9 is connected with the doctor blade 11, and the knife holder 8 is further provided with a spring 10 connected with the sliding plate 9.

[0026] In the embodiment, under the elastic force of the spring 10, the sliding plate 9 is subjected to the elastic force to the side of the doctor blade 11, so that the elastic connection between the doctor blade 11 and the photosensitive drum 1 is achieved, and when the doctor blade 11 is worn, the doctor blade 11 is still closely attached to the surface of the photosensitive drum 1 under the elastic force of the spring 10, so that the cleaning effect of the doctor blade 11 on the residual toner on the photosensitive drum 1 is maintained.

[0027] In one case of the embodiment, the conversion mechanism comprises a rotating shaft 12 rotatably arranged in the cleaning cavity 3 and located at the middle part of the two moving frames 7, the rotating shaft 12 is provided with a gear 13, the proximal end of the two moving frames 7 is provided with a rack 14 engaged with the gear 13, and the outer wall of the cleaning frame 2 is provided with a motor 15 connected with the rotating shaft 12.

[0028] In the embodiment, when the rotation of the two doctor blades 11 needs to be achieved, the motor 15 is started by an external controller, the motor 15 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the gear 13 to rotate, the gear 13 drives the rack 14 to move, the rack 14 drives the guide block 6 on the moving frame 7 to move along the limiting rod 5, so that the doctor blade 11 originally in contact with the photosensitive drum 1 moves to the right and separates from the photosensitive drum 1, and the doctor blade 11 originally separated from the photosensitive drum 1 moves to the left and contacts the photosensitive drum 1, so that the conversion of the doctor blade 11 is achieved, and the toner attached to the doctor blade 11 entering the cleaning cavity 3 can be sucked and cleaned.

[0029] In one case of the embodiment, the waste box 20 is provided with a waste cavity 21, the waste cavity 21 is connected with the annular ventilation frame 16 through the material conveying pipe 19, the cleaning frame 2 is provided with a material suction pump 23 connected with the waste cavity 21, and the waste cavity 21 is provided with a filter screen 22.

[0030] When the toner attached to the doctor blade 11 entering the cleaning cavity 3 is cleaned, the material suction pump 23 is started, the material suction pump 23 generates suction force, the toner on the surface of the doctor blade 11 is sucked through the discharging head on the annular ventilation frame 16, and enters the waste cavity 21 through the annular ventilation frame 16, the material guide pipe 18 and the material conveying pipe 19, and is intercepted through the filter screen 22, so that the centralized cleaning of the toner on the doctor blade 11 is achieved, the use effect is better, and the movable door opened on the side wall of the cleaning frame 2 facilitates the cleaning of the toner on the top of the waste box 20 and in the cleaning cavity 3.

[0031] The working principle of the utility model is: the cleaning mechanism is arranged on the residual carbon powder on the photosensitive drum 1 is cleaned, and the cleaning carbon powder will fall into the groove on the top of waste box 20, realize the collection of carbon powder, and when the scraper 11 of cleaning mechanism is attached with a large amount of carbon powder, the scraper 11 originally contacted with photosensitive drum 1 is retracted into cleaning cavity 3 through conversion mechanism, and the scraper 11 of another cleaning mechanism starts to contact with photosensitive drum 1, at this moment, the carbon powder attached on the surface of scraper 11 can be strongly sucked through annular ventilation frame 16 and suction port, and the carbon powder sucked from scraper 11 is sent into waste box 20 for storage, through the rotation of scraper 11 on the cleaning mechanism, the residual carbon powder on photosensitive drum 1 can be continuously cleaned, and the carbon powder attached on scraper 11 can be concentratedly cleaned, so that the cleaning effect of scraper 11 on the residual carbon powder on photosensitive drum 1 is maintained.

[0032] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

[0033] In addition, it should be understood that, although the present specification is described according to the embodiments, not every embodiment contains only one independent technical scheme, the description mode of the specification is only for the sake of clarity, the skilled in the art should regard the specification as a whole, and the technical scheme in each embodiment can also be combined to form other embodiments that the skilled in the art can understand.

Claims

1. A cleaning blade for a printer cartridge, comprising a photosensitive drum and a cleaning shelf, characterized by, The cleaning frame is internally provided with a cleaning cavity, the inner wall of the cleaning cavity is provided with two symmetrically distributed mounting frames, a limiting rod is mounted on the mounting frame, the limiting rod is slidingly connected with a guide block, the guide block is fixedly connected with a moving frame, the bottom of the cleaning frame is provided with a waste box, and further comprises: The cleaning mechanism comprises a tool holder connected with the moving frame, the tool holder is slidingly connected with a scraper, the tool holder is internally provided with an elastic member connected with the scraper, and the cleaning mechanism is used for cleaning residual carbon powder on the photosensitive drum. A conversion mechanism is arranged in the cleaning cavity and is used for realizing the transposition of the two cleaning mechanisms. Two annular ventilation frames are mounted in the cleaning cavity, the inner wall of the annular ventilation frame is provided with a plurality of material suction heads, and a material guide pipe is connected between the two annular ventilation frames.

2. A cleaning blade for a printer cartridge according to claim 1, wherein The elastic member comprises a sliding plate slidingly arranged on the inner wall of the tool holder, the sliding plate is connected with the scraper, and a spring connected with the sliding plate is further arranged in the tool holder.

3. The cleaning blade for a printer cartridge according to claim 1, wherein The conversion mechanism comprises a rotating shaft rotatingly arranged in the cleaning cavity and located at the middle part of the two moving frames, a gear is mounted on the rotating shaft, a rack engaged with the gear is arranged at the close end of the two moving frames, and a motor connected with the rotating shaft is mounted on the outer wall of the cleaning frame.

4. The cleaning blade for a printer cartridge according to claim 1, wherein A waste cavity is arranged in the waste box, the waste cavity is connected with the annular ventilation frame through a material conveying pipe, and a material suction pump connected with the waste cavity is arranged in the cleaning frame.

5. A cleaning blade for a printer cartridge according to claim 4, wherein, A filter screen is arranged in the waste cavity.

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