A cleaning blade for a selenium drum

Abstract

The utility model discloses a kind of cleaning scrapers for selenium drum, including knife rest and blade, blade includes connecting portion and working part, knife rest includes main frame body and auxiliary frame body;The both ends of main frame body are provided with limiting slot, let position hole and limiting hole, selenium drum frame is equipped with the bearing platform for placing main frame body, bearing platform includes with the horizontal plane and vertical plane of main frame body, the both ends of bearing platform are fixedly installed with bearing seat, bearing seat is equipped with the limiting block, internal thread hole and limiting column sequentially with limiting slot, let position hole and limiting hole cooperation, bearing seat is opposite internal thread hole and limiting column and is fixed with pad, the upper surface of pad is flush with the horizontal plane of bearing platform, pad is opposite internal thread hole and set up to avoid opening, lower locking bolt is threadedly connected with the internal thread hole of bearing seat;Auxiliary frame body is pressed in the upper of main frame body. The cleaning scraper for selenium drum has the advantages of improving the installation stability of knife rest, avoiding the rearward movement of knife rest, and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a cleaning scraper for toner cartridges. Background Technology

[0002] In the field of printing equipment, the toner cartridge is a core component, and its performance directly affects print quality and equipment stability. The cleaning blade, as a key component of the toner cartridge, plays a crucial role in removing incompletely transferred toner from the surface of the photosensitive drum, thus significantly impacting print quality.

[0003] Chinese patent CN103092043A discloses a cleaning scraper, including a blade holder and a blade. The blade has a connecting part connected to the blade holder and a working part that contacts the photosensitive drum. The working part of the blade is in close contact with the surface of the photosensitive drum. When the photosensitive drum enters the cleaning process, residual toner on the surface is scraped off by the working part of the blade and falls into the waste toner container, thereby effectively cleaning the surface of the photosensitive drum. Mounting holes are provided at both ends of the blade holder, and the blade holder is connected to the drum frame by two screws.

[0004] However, in actual use, the rotating photoconductor drum generates friction on the cleaning blade. This friction causes the cleaning blade to shift. Since the blade holder is only connected to the drum frame with two screws, the installation stability of the blade holder is poor. This causes the cleaning blade to gradually deviate from its initial installation position, resulting in uneven contact pressure between the working part of the blade and the surface of the photoconductor drum. Consequently, residual toner in some areas cannot be effectively scraped off, leading to defects such as background gray and streaks on the printed page. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a cleaning scraper for toner cartridges that improves the installation stability of the scraper holder, avoids the scraper holder from retracting and shifting, and has high reliability.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A cleaning scraper for a toner cartridge, detachably mounted inside the waste toner compartment of the toner cartridge frame near the photosensitive drum, includes a blade holder and a blade. The blade includes a connecting portion connected to the blade holder and a working portion that contacts the photosensitive drum. The working portion of the blade is in close contact with the surface of the photosensitive drum. The scraper is characterized in that...

[0008] The tool holder includes a main frame and an auxiliary frame;

[0009] The main frame is a plate structure. The lower outer side of the main frame is fixedly connected to the blade connection part. Both ends of the main frame are provided with limit grooves, clearance holes and limit holes. The toner cartridge frame is provided with a support platform for placing the main frame. The support platform includes a horizontal surface and a vertical surface that fits against the main frame. Both ends of the support platform are fixedly installed with support seats. Each support seat is provided with a limit block, an internal thread hole and a limit post that mate with the limit groove, clearance hole and limit hole in sequence. A pad is fixed to the support seat opposite the internal thread hole and the limit post. The upper surface of the pad is flush with the horizontal surface of the support platform. The pad has an clearance opening opposite the internal thread hole. The lower locking bolt passes through the clearance hole of the main frame and the clearance opening of the pad in sequence and is threadedly connected to the internal thread hole of the support seat.

[0010] The auxiliary frame is pressed on top of the main frame.

[0011] In the above technical solution, the blade holder is configured as a main frame and an auxiliary frame. The main frame achieves precise positioning through the cooperation of the limiting groove, the limiting block of the receiving seat, the limiting hole, and the limiting post, preventing offset during installation and limiting displacement of the main frame under force. The lower locking bolt passes through the clearance hole and the spacer opening to connect with the internal threaded hole, and the spacer fills the assembly gap, ensuring a tight fit between the main frame and the horizontal surface of the receiving platform, effectively dispersing the locking force and preventing local deformation of the main frame under force. The receiving platform includes a horizontal and a vertical surface that fits against the main frame, which can limit the main frame and transfer the force to the receiving platform when the main frame is under force. The auxiliary frame is pressed on top of the main frame, further enhancing the overall rigidity of the main frame and reducing the risk of warping of the main frame due to friction generated by the rotation of the photosensitive drum. From positioning, fixing, and rigidity reinforcement, the installation stability of the cleaning blade is improved from multiple dimensions, ensuring the contact accuracy between the working part of the blade and the surface of the photosensitive drum and avoiding the impact of installation offset on the cleaning effect.

[0012] Preferably, the auxiliary frame is an L-shaped structure, including a horizontal section and a vertical section. The horizontal section is pressed onto the upper surface of the main frame, and the vertical section is fitted with the vertical surface of the receiving platform.

[0013] Preferably, an internally threaded cylinder is fixedly installed on the receiving seat, and a through hole is provided through the main frame body directly opposite the internally threaded cylinder. Both ends of the auxiliary frame body are provided with through holes, and the upper locking bolt passes through the through holes and connects with the internally threaded hole.

[0014] Preferably, the upper inner side of the limiting block is provided with a guiding arc surface.

[0015] Preferably, the main frame is provided with a number of protruding ribs, and the lower end of the auxiliary frame is provided with a sliding groove that slides with the protruding ribs.

[0016] Preferably, a number of reinforcing blocks are fixedly installed at intervals along the length of the main frame, and the reinforcing blocks are attached to both sides of the auxiliary frame.

[0017] Preferably, the connecting part of the blade is connected to the main frame by adhesive.

[0018] In summary, this cleaning blade for toner cartridges offers advantages such as improved blade holder installation stability, prevention of blade holder displacement, and high reliability. It achieves precise blade holder installation through structures including limiting grooves, limiting blocks, limiting holes, and limiting posts; and constructs a double locking system through the cooperation of lower and upper locking bolts with internal threaded holes and internal threaded cylinders, enhancing connection strength. This effectively solves the problems of unstable installation and easy deformation under stress associated with traditional cleaning blades, ensuring that the working part of the blade maintains stable and precise contact with the photosensitive drum surface, significantly improving toner cleaning performance, reducing printing defects, extending the service life of the cleaning blade and toner cartridge, and lowering equipment maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a cleaning scraper for toner cartridges according to the present invention.

[0020] Figure 2 for Figure 1 Enlarged diagram of point D in the middle.

[0021] Figure 3 for Figure 1 The split diagram.

[0022] Figure 4 for Figure 2 Enlarged diagram of point E in the middle.

[0023] Figure 5 This is a schematic diagram showing the installation state of a cleaning scraper for a toner cartridge and a toner cartridge frame according to the present invention.

[0024] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0025] Figure 7 for Figure 5 A schematic diagram with the auxiliary frame removed.

[0026] Figure 8 for Figure 7 Enlarged diagram of point B.

[0027] Figure 9 This is a schematic diagram of the toner cartridge frame.

[0028] Figure 10 for Figure 9 Enlarged diagram of point C in the middle. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] like Figure 1-10 As shown, a cleaning scraper 1 for a toner cartridge is detachably mounted inside the waste toner compartment of the toner cartridge frame 2 near the photosensitive drum. It includes a blade holder and a blade 3. The blade includes a connecting portion connected to the blade holder and a working portion that contacts the photosensitive drum. The working portion of the blade is in close contact with the surface of the photosensitive drum. The feature is that...

[0031] The tool holder includes a main frame 4 and an auxiliary frame 5;

[0032] The main frame is a plate structure. The lower outer side of the main frame is fixedly connected to the blade connection part. Both ends of the main frame are provided with limit grooves 6, clearance holes 7 and limit holes 8. The toner cartridge frame is provided with a support platform for placing the main frame. The support platform includes a horizontal surface 9 and a vertical surface 10 that fits against the main frame. Both ends of the support platform are fixedly installed with support seats 11. Each support seat is provided with a limit block 12, an internal thread hole 13 and a limit post 14 that cooperate with the limit groove, clearance hole and limit hole in sequence. The support seat is fixed with a pad 15 facing the internal thread hole and the limit post. The upper surface of the pad is flush with the horizontal surface of the support platform. The pad has a clearance opening 16 facing the internal thread hole. The lower locking bolt 17 passes through the clearance hole of the main frame and the clearance opening of the pad in sequence and is threadedly connected to the internal thread hole of the support seat.

[0033] The auxiliary frame is pressed on top of the main frame.

[0034] In the above technical solution, the blade holder is configured as a main frame and an auxiliary frame. The main frame achieves precise positioning through the cooperation of the limiting groove, the limiting block of the receiving seat, the limiting hole, and the limiting post, preventing offset during installation and limiting displacement of the main frame under force. The lower locking bolt passes through the clearance hole and the spacer opening to connect with the internal threaded hole, and the spacer fills the assembly gap, ensuring a tight fit between the main frame and the horizontal surface of the receiving platform, effectively dispersing the locking force and preventing local deformation of the main frame under force. The receiving platform includes a horizontal and a vertical surface that fits against the main frame, which can limit the main frame and transfer the force to the receiving platform when the main frame is under force. The auxiliary frame is pressed on top of the main frame, further enhancing the overall rigidity of the main frame and reducing the risk of warping of the main frame due to friction generated by the rotation of the photosensitive drum. From positioning, fixing, and rigidity reinforcement, the installation stability of the cleaning blade is improved from multiple dimensions, ensuring the contact accuracy between the working part of the blade and the surface of the photosensitive drum and avoiding the impact of installation offset on the cleaning effect.

[0035] In implementation, the auxiliary frame is an L-shaped structure, including a horizontal section and a vertical section. The horizontal section presses against the upper surface of the main frame, and the vertical section is in contact with the vertical surface of the receiving platform. The auxiliary frame, comprising both horizontal and vertical sections, further suppresses the vertical deformation of the main frame by pressing against its upper surface, while the vertical section, in contact with the vertical surface of the receiving platform, restricts the longitudinal displacement of the main frame, forming a two-way constraint. Compared to a planar auxiliary frame, this design increases the contact support points with the drum unit frame, effectively dispersing the lateral and longitudinal forces acting on the main frame, alleviating the torsion caused by uneven stress, further enhancing the installation stability of the cleaning blade, and improving the overall deformation resistance of the blade holder, ensuring that the working part of the blade always maintains stable contact with the photosensitive drum.

[0036] In implementation, an internally threaded cylinder 18 is fixedly installed on the receiving seat. A through hole 19 is provided through the internally threaded cylinder on the main frame body. Both ends of the auxiliary frame body are provided with through holes 20. The upper locking bolt 21 passes through the through holes and connects with the internally threaded hole. The upper locking bolt passes through the through hole of the auxiliary frame body and the through hole of the main frame body in sequence and connects with the internally threaded cylinder, firmly fixing the auxiliary frame body, the main frame body and the receiving seat into one unit. This improves the connection strength between the tool holder and the toner cartridge frame, reduces the gap between the main frame body and the auxiliary frame body, avoids relative displacement between the two, improves the overall rigidity of the tool holder, and effectively resists the deformation and displacement caused by the friction of the photosensitive drum.

[0037] Specifically, limit grooves, clearance openings 22, and limit holes are respectively provided on the horizontal section of the auxiliary frame corresponding to the limit block, lower locking bolt, and limit post to achieve the limitation of the auxiliary frame.

[0038] During implementation, a guide arc surface is provided on the inner side of the upper end of the limiting block. During the installation of the main frame, this guide arc surface helps the limiting groove of the main frame to quickly and smoothly fit into the limiting block, avoiding installation jamming problems caused by traditional right-angle structures, reducing installation difficulty, and improving assembly efficiency. Simultaneously, the guide arc surface reduces scratching when the limiting groove and the limiting block contact each other, preventing damage due to hard collisions, protecting the structural integrity of the components, ensuring the accuracy of the limiting fit, and indirectly ensuring the stability of subsequent cleaning scraper installation, preventing damage to components during installation from affecting the positioning effect.

[0039] In implementation, the main frame is provided with several protruding ribs 23, and the lower end of the auxiliary frame is provided with a sliding groove 24 that slides with the protruding ribs. The sliding groove at the lower end of the auxiliary frame slides with the protruding ribs, assisting in the quick positioning and installation of the auxiliary frame, ensuring the assembly accuracy of the auxiliary frame and the main frame, limiting the lateral displacement of the auxiliary frame, and preventing lateral displacement of the auxiliary frame due to force during use, thereby ensuring the stable pressing and reinforcement effect of the auxiliary frame on the main frame. The cooperation between the protruding ribs and the sliding groove also increases the contact area between the main frame and the auxiliary frame, disperses the force between them, reduces deformation caused by localized force concentration, and improves the overall structural stability of the tool holder.

[0040] During implementation, a number of reinforcing blocks 25 are fixedly installed at intervals along the length of the main frame, and the reinforcing blocks are attached to both sides of the auxiliary frame. This enhances the local structural strength of the main frame, reduces deformation caused by excessive local stress, improves the deformation resistance of the blade holder, and ensures the stability of the cleaning scraper during operation.

[0041] In practice, the connecting part of the blade is glued to the main frame. This ensures a tight fit between the blade and the main frame, simplifies the process, and reduces production and assembly difficulties.

[0042] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A cleaning scraper for a toner cartridge, detachably mounted in the waste toner compartment of a toner cartridge frame (2) near the photosensitive drum, comprising a scraper holder and a blade (3), wherein the blade (3) comprises a connecting portion connected to the scraper holder and a working portion in contact with the photosensitive drum, the working portion of the blade being in close contact with the surface of the photosensitive drum, characterized in that, The tool holder includes a main frame (4) and an auxiliary frame (5); The main frame (4) is a plate structure. The lower outer side of the main frame (4) is fixedly connected to the connecting part of the blade (3). Both ends of the main frame (4) are provided with limit grooves (6), clearance holes (7) and limit holes (8). The toner cartridge frame is provided with a receiving platform for placing the main frame. The receiving platform includes a horizontal surface (9) and a vertical surface (10) that fits against the main frame. Both ends of the receiving platform are fixedly installed with receiving seats (11). Each is provided with a limiting block (12), an internal threaded hole (13), and a limiting post (14) that cooperate with the limiting groove, the clearance hole, and the limiting hole in sequence. The receiving seat is fixed with a pad (15) facing the internal threaded hole and the limiting post. The upper surface of the pad is flush with the horizontal plane of the receiving platform. The pad has a clearance opening (16) facing the internal threaded hole. The lower locking bolt (17) passes through the clearance hole of the main frame and the clearance opening of the pad in sequence, and then is threadedly connected to the internal threaded hole of the receiving seat. The auxiliary frame is pressed on top of the main frame.

2. A cleaning scraper for a toner cartridge according to claim 1, characterized in that, The auxiliary frame is an L-shaped structure, including a horizontal section and a vertical section. The horizontal section is pressed onto the upper surface of the main frame, and the vertical section is attached to the vertical surface of the receiving platform.

3. A cleaning scraper for a toner cartridge according to claim 2, characterized in that, An internally threaded cylinder (18) is fixedly installed on the receiving seat. A through hole (19) is provided in the main frame body directly opposite the internally threaded cylinder. Both ends of the auxiliary frame body are provided with through holes (20). The upper locking bolt (21) passes through the through hole and connects with the internally threaded hole.

4. A cleaning scraper for a toner cartridge according to claim 1, characterized in that, The upper inner side of the limiting block is provided with a guide arc surface.

5. A cleaning scraper for a toner cartridge according to claim 1, characterized in that, The main frame is provided with a number of protruding ribs (23), and the lower end of the auxiliary frame is provided with a sliding groove (24) that slides with the protruding ribs.

6. A cleaning scraper for a toner cartridge according to claim 1, characterized in that, Several reinforcing blocks (25) are fixedly installed at intervals along the length of the main frame, and the reinforcing blocks are attached to both sides of the auxiliary frame.

7. A cleaning scraper for a toner cartridge according to claim 1, characterized in that, The blade's connecting part is glued to the main frame.

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