Self-adaptive cleaning knife control system

Abstract

The utility model relates to the technical field of printing equipment, in particular to a self-adaptive cleaning knife control system which comprises a mounting frame, a cleaning knife is slidably connected to the lower end of the mounting frame, a plurality of guide rods are connected to the top of the cleaning knife, the guide rods are slidably connected into the mounting frame, an adjusting rod is rotatably connected to the middle of the mounting frame, and the adjusting rod is rotatably connected to the lower end of the mounting frame. The bottom end of the adjusting rod is in threaded connection with the cleaning knife, the adjusting rod is sleeved with a limiting ring, the limiting ring is connected into the mounting frame in a sliding mode, and an adjusting assembly for finely rotating the adjusting rod is arranged in the mounting frame. Through gear transmission cooperation of the adjusting rod and the stepping motor, the cleaning knife can dynamically adjust the contact pressure and the cutting edge gap between the cleaning knife and the developing roller according to the diameters, the rotating speeds and the carbon powder characteristics of different models of printer developing rollers, and precise self-adaptive adjustment of the distance between the cleaning knife and the developing roller is achieved.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to an adaptive cleaning blade control system. Background Technology

[0002] As a core device in modern office work and information output, the image quality and operational stability of printers directly depend on the coordinated operation of their internal precision components. In the field of laser printing, the developing roller is a key component of the imaging system, responsible for uniformly adsorbing and transferring toner onto the surface of the photosensitive drum to form a latent image. To ensure the cleanliness of the developing roller surface and prevent toner residue from affecting print quality, printers are typically equipped with a cleaning blade to clean the developing roller in real time.

[0003] In existing technologies, the design of cleaning blades has become standardized, with their shape, material, and installation method exhibiting a high degree of homogeneity. Most mainstream cleaning blades adopt a straight strip structure, primarily made of polyurethane rubber, and are fixed to one side of the developing roller via an elastic support structure. Although there are differences in details between different manufacturers, the core design logic of cleaning blades always revolves around a "fixed contact" cleaning mode, that is, achieving static contact with the developing roller through a preset installation angle and pressure.

[0004] However, the diameter, speed and toner characteristics of the developing rollers of different printer models vary greatly, which means that the optimal contact distance between the cleaning blade and the developing roller needs to be dynamically adjusted. The traditional fixed design cannot meet this requirement, which can easily lead to incomplete cleaning or excessive wear. Different brands or series of equipment need to be equipped with special cleaning blades, which has poor versatility. Utility Model Content

[0005] To overcome the shortcomings of specialized cleaning knife models and non-adaptive adjustment, this utility model provides an adaptive cleaning knife control system, aiming to solve the above-mentioned shortcomings.

[0006] An adaptive cleaning knife control system includes a mounting frame, a cleaning knife slidably connected to the lower end of the mounting frame, a plurality of guide rods connected to the top of the cleaning knife, the guide rods being slidably connected within the mounting frame, an adjusting rod rotatably connected to the middle of the mounting frame, the bottom end of the adjusting rod being threadedly connected to the cleaning knife, a limiting ring sleeved on the adjusting rod, the limiting ring being rotatably connected within the mounting frame, and an adjusting assembly for precisely rotating the adjusting rod being provided within the mounting frame.

[0007] Furthermore, it is particularly preferred that the adjustment assembly includes a mounting plate, the mounting bracket having a groove for mounting the adjustment assembly, the mounting plate being connected within the mounting bracket, a stepper motor being mounted at the bottom of the mounting plate, the stepper motor being located within the mounting bracket, the output shaft of the stepper motor passing through the mounting plate and connected to a first gear, the adjustment rod being coaxially connected to a second gear, the first gear meshing with the second gear, and a removable maintenance cover being connected to the front side of the groove in the mounting bracket.

[0008] Furthermore, it is particularly preferred that the top of the adjusting rod is provided with a dust cover for sealing the groove.

[0009] In addition, it is particularly preferred that the device also includes a pull rope, one end of which is connected to the outside of the inspection cover and the other end of which is connected to the mounting bracket.

[0010] Furthermore, it is particularly preferred that baffles are connected to both the left and right ends of the top surface of the cleaning blade, the baffles being slidably connected to the mounting bracket, and the baffles being used to close the groove connecting the cleaning blade and the mounting bracket.

[0011] Furthermore, it is particularly preferred that a sealing strip is connected to the bottom of the mounting bracket on the side that contacts the cleaning blade, and the sealing strip is sealed to the front and rear sides of the cleaning blade.

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

[0013] 1. Through the gear transmission of the adjusting rod and the stepper motor, the cleaning blade can dynamically adjust the contact pressure and blade gap with the developing roller according to the diameter, speed and toner characteristics of the developing roller of different printer models, so as to achieve precise adaptive adjustment of the distance between the cleaning blade and the developing roller.

[0014] 2. With the combination of modular adjustment components and detachable inspection cover, the adjustment components can be directly viewed simply by removing the inspection cover, allowing for stepper motor parameter calibration, gear cleaning, or component replacement, thus improving the equipment's versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view showing the connection relationship between the cleaning knife and the guide rod of this utility model.

[0017] Figure 3 This is a cross-sectional view of the installation structure of the baffle and sealing strip of this utility model.

[0018] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0019] The above-mentioned attached drawings include the following reference numerals: 1. Mounting bracket, 2. Cleaning knife, 3. Guide rod, 4. Adjusting rod, 5. Limiting ring, 6. Mounting plate, 7. Stepper motor, 71. First gear, 8. Second gear, 9. Inspection cover plate, 10. Dust cover, 11. Pull rope, 12. Baffle, 13. Sealing strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: An adaptive cleaning knife control system, such as Figures 1-4 As shown, the device includes a mounting frame 1, a cleaning blade 2, guide rods 3, an adjusting rod 4, a limiting ring 5, and an adjusting assembly. The cleaning blade 2 is slidably connected to the lower end of the mounting frame 1. Several guide rods 3 are connected to the top of the cleaning blade 2 and are slidably connected inside the mounting frame 1. An adjusting rod 4 is rotatably connected to the middle of the mounting frame 1. The bottom end of the adjusting rod 4 is threadedly connected to the cleaning blade 2. A limiting ring 5 is fitted on the adjusting rod 4 and is rotatably connected inside the mounting frame 1. The limiting ring 5 is used to restrict the up and down sliding of the adjusting rod 4. An adjusting assembly for finely rotating the adjusting rod 4 is provided inside the mounting frame 1.

[0022] like Figure 2 and Figure 4 As shown, the adjustment assembly includes a mounting plate 6, a stepper motor 7, a first gear 71, a second gear 8, and a maintenance cover 9. The mounting frame 1 has a groove for installing the adjustment assembly. The mounting plate 6 is connected to the mounting frame 1. The stepper motor 7 is installed at the bottom of the mounting plate 6 and is located inside the mounting frame 1. The output shaft of the stepper motor 7 passes through the mounting plate 6 and is connected to the first gear 71. The adjustment rod 4 is coaxially connected to the second gear 8. The first gear 71 meshes with the second gear 8. The stepper motor 7 adopts a reactive design, has no permanent magnets, and the rotor has no magnetic resistance, supporting manual assisted rotation. A detachable maintenance cover 9 is connected to the front side of the groove in the mounting frame 1.

[0023] like Figure 1 As shown, it also includes a dust cover 10. The top of the adjusting rod 4 is provided with a dust cover 10. The dust cover 10 closes the inner hexagonal groove to prevent dust or carbon powder from entering the inner hexagonal groove and affecting the manual adjustment function.

[0024] like Figure 1 As shown, it also includes a pull rope 11, one end of which is connected to the outside of the inspection cover 9, and the other end is connected to the mounting bracket 1, which facilitates quick disassembly with one hand.

[0025] like Figure 3 As shown, it also includes baffles 12. Both the left and right ends of the top surface of the cleaning knife 2 are connected to baffles 12. The baffles 12 are slidably connected to the mounting bracket 1. The baffles 12 are used to close the sliding groove connecting the cleaning knife 2 and the mounting bracket 1 to prevent carbon powder or dust from entering and affecting the sliding accuracy of the guide rod 3.

[0026] like Figure 3 As shown, it also includes a sealing strip 13. The bottom of the mounting bracket 1 is connected to the side that contacts the cleaning blade 2. The sealing strip 13 is sealed to the front and rear sides of the cleaning blade 2. The sealing strip 13 is made of elastic material and undergoes slight elastic deformation when it rubs against the surface of the cleaning blade 2.

[0027] First, the staff determined the parameters of the cleaning blade 2 to be replaced and confirmed the adjustment data. Then, using tools, they removed the dust cover 10 from the top of the adjusting rod 4, inserted a hex wrench into the hex socket, and rotated the adjusting rod 4. The adjusting rod 4, through its bottom threaded structure, pushed the cleaning blade 2 to move vertically. During this process, the two guide rods 3 slid synchronously within the mounting bracket 1, their guiding function restricting the rotational freedom of the cleaning blade 2, thereby precisely adjusting the distance between the bottom of the cleaning blade 2 and the top plane of the mounting bracket 1.

[0028] When the cleaning blade 2 slides, the baffle 12 always effectively seals the gap of the slide groove to prevent dust or toner from entering the interior and affecting the motion accuracy. The sealing strip 13 undergoes slight elastic deformation due to friction with the surface of the cleaning blade 2, which plays a buffering role to reduce the impact force when the cleaning blade 2 moves and maintains a tight fit with the surface of the cleaning blade 2. After the cleaning blade 2 moves to the target position, the staff puts the dust cover 10 back into the top of the adjusting rod 4 and positions the mounting bracket 1 as a whole in the printer's preset mounting position. The mounting bracket 1 is then fixed by fixing bolts and other means to ensure its position is stable.

[0029] In actual operation of the printer, if fine-tuning is required based on the real-time distance between the developing roller and the cleaning blade 2, the operator starts the stepper motor 7 in the adjustment assembly. The output shaft of the stepper motor 7 meshes with the second gear 8, which is coaxially connected to the adjustment rod 4, through the first gear 71, transmitting the rotational motion of the motor to the adjustment rod 4. By controlling the rotation angle of the stepper motor 7 and combining it with the thread pitch of the adjustment rod 4, the linear movement distance of the cleaning blade 2 can be calculated, thereby achieving high-precision distance adjustment.

[0030] During adjustment, the stepper motor 7 replaces manual operation to drive the adjustment lever 4 to rotate, pushing the cleaning blade 2 to extend or retract slightly along the guide rod 3. This changes the contact pressure between the blade and the developing roller, as well as the cleaning blade clearance. Operators can observe the printing results and provide real-time feedback, repeatedly fine-tuning the extension length of the cleaning blade 2 until optimal cleaning is achieved. This adaptive adjustment function allows the same mounting bracket 1 to accommodate the cleaning blade 2 installation requirements of different printer models, significantly improving the equipment's versatility.

[0031] When further adjustment of the cleaning blade 2 position or maintenance of the adjustment component is required, the operator uses the pull rope 11 to assist in removing the removable inspection cover 9 on the front side of the mounting bracket 1 groove. After the cover is removed, the adjustment component is fully exposed, allowing for inspection and replacement of each part of the adjustment component. Carbon powder adhering to the surface of the guide rod 3 can also be cleaned to ensure smooth sliding. After maintenance, the inspection cover 9 is re-secured, ensuring the long-term stable operation of the adaptive cleaning blade 2 control system.

[0032] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An adaptive cleaning blade control system, characterized by, The device includes a mounting bracket (1), a cleaning blade (2) is slidably connected to the lower end of the mounting bracket (1), a number of guide rods (3) are connected to the top of the cleaning blade (2), the guide rods (3) are slidably connected inside the mounting bracket (1), an adjusting rod (4) is rotatably connected to the middle of the mounting bracket (1), the bottom end of the adjusting rod (4) is threadedly connected to the cleaning blade (2), a limiting ring (5) is sleeved on the adjusting rod (4), the limiting ring (5) is rotatably connected inside the mounting bracket (1), and an adjusting component for finely rotating the adjusting rod (4) is provided inside the mounting bracket (1).

2. An adaptive cleaning blade control system as in claim 1, wherein, The adjustment assembly includes a mounting plate (6), the mounting bracket (1) has a groove for mounting the adjustment assembly, the mounting plate (6) is connected to the mounting bracket (1), a stepper motor (7) is mounted on the bottom of the mounting plate (6), the stepper motor (7) is located in the mounting bracket (1), the output shaft of the stepper motor (7) passes through the mounting plate (6) and is connected to a first gear (71), the adjustment rod (4) is coaxially connected to a second gear (8), the first gear (71) meshes with the second gear (8), and a detachable maintenance cover plate (9) is connected to the front side of the groove of the mounting bracket (1).

3. An adaptive cleaning blade control system as in claim 1, wherein, The top of the adjusting rod (4) is provided with a dust cover (10) for sealing the groove.

4. An adaptive cleaning blade control system as in claim 2, wherein, It also includes a pull rope (11), one end of which is connected to the outside of the inspection cover (9), and the other end is connected to the mounting bracket (1).

5. An adaptive cleaning blade control system as in claim 1, wherein, The cleaning blade (2) has baffles (12) connected to both the left and right ends of its top surface. The baffles (12) are slidably connected to the mounting bracket (1). The baffles (12) are used to close the groove connecting the cleaning blade (2) and the mounting bracket (1).

6. An adaptive cleaning blade control system as in claim 1, wherein, A sealing strip (13) is connected to the bottom of the mounting bracket (1) on the side that contacts the cleaning knife (2), and the sealing strip (13) is sealed to the front and rear sides of the cleaning knife (2).

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