A high strength cleaning doctor blade and printer

Abstract

The utility model relates to laser printer technical field discloses a kind of high-strength cleaning doctor blade, is installed on the installation mesa of selenium drum shell, two threaded holes are provided in the both ends of installation mesa, the both ends of tool rest correspond threaded hole are fixed with positioning cylinder, and a plurality of blade threaded holes are provided on tool rest;Blade is provided with the positioning hole allowing positioning cylinder to pass through, and blade is provided with blade perforation and is opposite blade threaded hole and passes through;Pressing plate is provided with the let go of hole and is opposite positioning cylinder and passes through, and pressing plate is provided with mounting hole and is opposite blade perforation and passes through;Locking bolt passes through positioning cylinder and is connected with threaded hole, and the diameter size of the circle where the end of locking bolt is located is greater than the diameter size of let go of hole;Screw passes through mounting hole, blade perforation and is connected with blade threaded hole, and the diameter size of the circle where the end of screw is located is greater than the diameter size of mounting hole.The overall structural strength and stress uniformity of the cleaning doctor blade can be improved, and the working stability and service life of the cleaning doctor blade are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of laser printer technology, specifically to a high-strength cleaning scraper and printer. Background Technology

[0002] The cleaning blade is a key component of a printer, primarily used to remove residual toner that has not been fully transferred from the surface of the photosensitive drum. This prevents residual toner from affecting the clarity and cleanliness of subsequent prints, ensuring continuous and stable printer output. Most cleaning blades on the market today have a structure where the blade holder and blade are bonded together as one unit. During installation, screws are used to secure the blade holder to the drum housing through holes at both ends.

[0003] However, existing integrated adhesive cleaning blades have significant structural defects. The blade holder only connects to the drum housing via holes at both ends, lacking effective support in the middle, and the blade is only bonded to the blade holder without any additional reinforcement. This structure results in uneven force distribution after the blade is transferred to the blade holder during operation, leading to a significant imbalance in overall force. This not only reduces the structural strength of the cleaning blade but also affects its operational stability. Long-term use can easily cause the blade to loosen, thus shortening the cleaning blade's lifespan and impacting the printer's overall printing quality and operational reliability. Summary of the Invention

[0004] The purpose of this invention is to provide a high-strength cleaning scraper that increases the connection stability between the cleaning scraper and the drum shell, allowing the cleaning scraper to withstand force better and extend its service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-strength cleaning scraper is mounted on a mounting platform of a toner cartridge shell. Two threaded holes are provided at both ends of the mounting platform.

[0007] The tool holder has a positioning cylinder fixed at both ends of the tool holder corresponding to the threaded holes. The inner hole of the positioning cylinder is connected to the threaded hole. The tool holder is provided with several blade threaded holes. The blade is placed on the tool holder. The blade is provided with a positioning hole that allows the positioning cylinder to pass through. The blade is provided with a blade through hole directly opposite the blade threaded hole. The pressure plate is placed on the blade. The pressure plate is provided with a clearance hole directly opposite the positioning cylinder. The pressure plate is provided with a mounting hole directly opposite the blade through hole.

[0008] The locking bolt passes through the positioning cylinder and connects to the threaded hole. The diameter of the circle containing the end of the locking bolt is larger than the diameter of the clearance hole. The screw passes through the mounting hole, the blade passes through the hole and connects to the threaded hole of the blade. The diameter of the circle containing the end of the screw is larger than the diameter of the mounting hole.

[0009] In the above technical solution, a "sandwich" structure is formed by the tool holder, the blade, and the pressure plate. The tool holder and the pressure plate limit the blade, and the force on the blade is transmitted to the tool holder and the pressure plate, which enables the tool holder to better bear the force.

[0010] During assembly, place the tool holder on the mounting platform of the toner cartridge shell, place the blade on the tool holder, pass the positioning cylinder through the positioning hole of the blade, place the pressure plate on the blade, and position the upper end of the positioning cylinder in the clearance hole of the pressure plate. The locking bolt passes through the positioning cylinder and connects to the threaded hole of the mounting platform to fix the pressure plate, blade, tool holder and mounting platform. The screw passes through the mounting hole, the blade through the hole and connects to the threaded hole of the blade to fix the pressure plate, blade and tool holder, which is convenient for assembly.

[0011] The above structure solves the problem of the current simple blade holder that is only connected at both ends, making the cleaning scraper stronger and more reliable. It greatly improves the overall structural strength and stress uniformity of the cleaning scraper, effectively avoids the problem of blade loosening or deformation during use, and extends the service life of the cleaning scraper.

[0012] Preferably, positioning baffles are fixed on both sides and the rear side of the blade holder, the positioning baffles are in contact with the drum shell, the two sides and the rear side of the blade are in contact with the positioning baffles, and the two sides and the rear side of the pressure plate are in contact with the positioning baffles.

[0013] Preferably, the drum shell has protruding ribs located above the mounting surface, and the tool holder has a groove that slides with the ribs.

[0014] Preferably, the dimension of the end of the rib away from the drum shell is larger than the dimension of the end of the rib connected to the drum shell.

[0015] Preferably, the mounting platform has protruding positioning blocks on both sides, and the tool holder has positioning openings on both sides that cooperate with the positioning blocks.

[0016] Preferably, the lower surface of the blade is coated with adhesive, and the blade is bonded to the blade holder.

[0017] Preferably, the upper surface of the blade is coated with adhesive, and the blade is bonded to the pressure plate.

[0018] Another objective of this invention is to provide a printer that extends its service life and provides high print quality.

[0019] To achieve another objective of this utility model, the following technical solution is adopted:

[0020] A printer including the aforementioned high-strength cleaning scraper.

[0021] The beneficial effects of this utility model are: improving the overall structural strength and stress uniformity of the cleaning scraper, effectively preventing the blade from becoming loose or the blade holder from deforming during use, and ensuring the working stability and service life of the cleaning scraper. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a high-strength cleaning scraper and a toner cartridge shell.

[0023] Figure 2 for Figure 1 A schematic diagram of the split structure.

[0024] Figure 3 This is a schematic diagram of the structure of a high-strength cleaning scraper.

[0025] Figure 4 for Figure 3 A schematic diagram of the split structure. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Example 1:

[0028] like Figures 1 to 4 As shown, this utility model provides a high-strength cleaning scraper, which is installed on the mounting platform 2 of the toner cartridge shell 1. Both ends of the mounting platform 2 have two threaded holes 3, including:

[0029] Tool holder 4, with positioning cylinders 5 fixed at both ends of the tool holder 4 corresponding to the threaded holes 3. The inner hole of the positioning cylinder 5 is connected to the threaded hole 3. The tool holder 4 is provided with several blade threaded holes 6. Blade 7 is placed on the tool holder 4. The blade 7 is provided with a positioning hole 8 that allows the positioning cylinder 5 to pass through. The blade 7 is provided with a blade through hole 9 that is directly opposite the blade threaded hole 6. Pressure plate 10 is placed on the blade 7. The pressure plate 10 is provided with a clearance hole 11 that is directly opposite the positioning cylinder 5. The pressure plate 10 is provided with a mounting hole 12 that is directly opposite the blade through hole 9.

[0030] The locking bolt 13 passes through the positioning cylinder 5 and connects to the threaded hole 3. The diameter of the circle containing the end of the locking bolt 13 is larger than the diameter of the clearance hole 8. The screw 14 passes through the mounting hole 12 and the blade through hole 9 and connects to the blade threaded hole 6. The diameter of the circle containing the end of the screw 14 is larger than the diameter of the mounting hole 12.

[0031] In the above technical solution, a "sandwich" structure is formed by the tool holder 4, the blade 7 and the pressure plate 10. The tool holder 4 and the pressure plate 10 limit the blade 7, and the force on the blade 7 is transmitted to the tool holder 4 and the pressure plate 10, which enables the tool holder 4 to better bear the force.

[0032] During assembly, the tool holder 4 is placed on the mounting platform 2 of the toner cartridge shell 1, the blade 7 is placed on the tool holder 4, the positioning cylinder 5 passes through the positioning hole 8 of the blade 7, the pressure plate 10 is placed on the blade 7, and the upper end of the positioning cylinder 5 is located in the clearance hole 11 of the pressure plate 10. The locking bolt 13 passes through the positioning cylinder 5 and is connected to the threaded hole 3 of the mounting platform 2 to fix the pressure plate 10, the blade 7, the tool holder 4 and the mounting platform 2. The screw 14 passes through the mounting hole 12 and the blade through hole 9 and is connected to the blade threaded hole 6 to fix the pressure plate 10, the blade 7 and the tool holder 4, which is convenient for assembly.

[0033] The above structure solves the problem of the current simple blade holder that is only connected at both ends, making the cleaning scraper stronger and more reliable. It greatly improves the overall structural strength and stress uniformity of the cleaning scraper, effectively avoids the problem of blade loosening or deformation during use, and extends the service life of the cleaning scraper.

[0034] During implementation, positioning baffles 15 are fixed on both sides and the rear side of the blade holder 4. The positioning baffles 15 are in contact with the drum shell 1. The two sides and the rear side of the blade 7 are in contact with the positioning baffles 15. The two sides and the rear side of the pressure plate 10 are in contact with the positioning baffles 15.

[0035] In the above technical solution, the positioning stops 15 on both sides and the rear side of the blade holder 4 form a U-shaped structure for positioning the blade 7 and the pressure plate 10. This enables quick positioning and installation, avoids assembly misalignment from affecting the cleaning effect, and at the same time, the force on the blade 7 and the pressure plate 10 can be better transmitted to the blade holder 4, improving the stability of the cleaning scraper.

[0036] In practice, the drum shell 1 has a protruding rib 16, which is located above the mounting platform 2. The tool holder 4 has a sliding groove 17 that slides with the rib 16. The rib 16 guides the installation of the tool holder 4 and the drum shell 1, increases the contact area between the tool holder 4 and the drum shell 1, and improves the connection stability and reliability between the tool holder 4 and the drum shell 1.

[0037] In practice, the dimension of the end of the rib 16 furthest from the drum shell 1 is larger than the dimension of the end of the rib 16 connected to the drum shell 1. The structure of the rib 16 forms a barb structure, which prevents the tool holder 4 from falling off or shifting during use, further improving the connection reliability between the tool holder 4 and the drum shell 1.

[0038] In practice, positioning blocks 18 protrude from both sides of the mounting platform 2, and positioning openings 19 that mate with the positioning blocks 18 are provided on both sides of the tool holder 4. The two positioning blocks 18 are located on both sides of the mounting platform 2, and they mate with the positioning openings 19 of the tool holder 4 to form a lateral limiting structure, which can prevent the tool holder 4 from shifting or falling off during use, improve the installation stability of the tool holder 4, and further ensure the installation accuracy of the blade 7.

[0039] During implementation, adhesive is applied to the lower surface of the blade 7, which is then bonded to the tool holder 4. This adhesive bonding, added to the mechanical fixing secured by the screw 14, creates a double-fixation system, improving the tightness of the connection between the blade 7 and the tool holder 4 and reducing localized stress concentration that could cause the blade 7 to loosen or fall off.

[0040] During implementation, adhesive is applied to the upper surface of the blade 7, which is then bonded to the pressure plate 10. This prevents the edge of the blade 7 from warping or shifting, ensuring the installation accuracy and reliability of the blade 7, reducing the vibration amplitude of the blade 7, and improving the cleaning effect of the cleaning scraper.

[0041] Example 2:

[0042] A printer includes the aforementioned high-strength cleaning blade. By using a high-strength cleaning blade, the printer's print quality can be guaranteed, the lifespan of the cleaning blade can be extended, the frequency and cost of printer maintenance can be reduced, and the stability and reliability of the printer can be improved.

[0043] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength cleaning scraper, mounted on a mounting surface (2) of a toner cartridge shell (1), wherein two threaded holes (3) are provided at both ends of the mounting surface (2), characterized in that, include: The tool holder (4) has a positioning cylinder (5) fixed at both ends of the tool holder (4) corresponding to the threaded hole (3). The inner hole of the positioning cylinder (5) is connected to the threaded hole (3). The tool holder (4) is provided with several blade threaded holes (6). The blade (7) is placed on the tool holder (4). The blade (7) is provided with a positioning hole (8) that allows the positioning cylinder (5) to pass through. The blade (7) is provided with a blade through hole (9) that is directly opposite the blade threaded hole (6). The pressure plate (10) is placed on the blade (7). The pressure plate (10) is provided with a clearance hole (11) that is directly opposite the positioning cylinder (5). The pressure plate (10) is provided with a mounting hole (12) that is directly opposite the blade (7) through hole. The locking bolt (13) passes through the positioning cylinder (5) and is connected to the threaded hole (3). The diameter of the circle containing the end of the locking bolt (13) is larger than the diameter of the relief hole (11). The screw (14) passes through the mounting hole (12), the blade through hole (9), and is connected to the blade threaded hole (6). The diameter of the circle containing the end of the screw (14) is larger than the diameter of the mounting hole (12).

2. The high-strength cleaning scraper according to claim 1, characterized in that, Positioning stops (15) are fixed on both sides and the rear side of the blade holder (4). The positioning stops (15) are in contact with the drum shell (1). The blade (7) is in contact with both sides and the rear side of the positioning stops (15). The pressure plate (10) is in contact with both sides and the rear side of the positioning stops (15).

3. The high-strength cleaning scraper according to claim 1 or 2, characterized in that, The drum shell (1) has a protruding rib (16) located above the mounting platform (2), and the tool holder (4) has a sliding groove (17) that slides with the rib (16).

4. The high-strength cleaning scraper according to claim 3, characterized in that, The dimension of the end of the rib (16) away from the drum shell (1) is larger than the dimension of the end of the rib (16) connected to the drum shell (1).

5. The high-strength cleaning scraper according to claim 1, 2, or 4, characterized in that, The mounting table (2) has protruding positioning blocks (18) on both sides, and the tool holder (4) has positioning openings (19) on both sides that cooperate with the positioning blocks (18).

6. The high-strength cleaning scraper according to claim 1, 2, or 4, characterized in that, The lower surface of the blade (7) is coated with adhesive, and the blade (7) is bonded to the blade holder (4).

7. The high-strength cleaning scraper according to claim 1, 2, or 4, characterized in that, The upper surface of the blade (7) is coated with adhesive, and the blade (7) is bonded to the pressure plate (10).

8. A printer, characterized in that, The high-strength cleaning scraper includes any one of claims 1 to 7.

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