A cleaning blade life warning device

Abstract

This utility model relates to the field of intelligent maintenance technology for printing equipment, and in particular to a cleaning blade life warning device. It includes a cleaning blade and a connecting plate. The cleaning blade is connected to a mounting bracket and is mounted inside the printer via the mounting bracket. A bent fixing plate is connected to the top of the mounting bracket. An adjusting rod is threaded to the lower end of the bent fixing plate, and a guide rod is slidably connected to the lower end of the fixing plate. The middle part of the connecting plate is rotatably connected to the end of the adjusting rod, and the connecting plate is fixedly connected to the end of the guide rod. A vibration sensor is mounted on the side of the connecting plate facing the cleaning blade. An acoustic auxiliary component is provided in the middle of the cleaning blade to pick up working sounds and assist in judging damage. By adjusting the position of the vibration sensor through the adjusting rod, guide rod, and connecting plate, real-time and accurate acquisition of the cleaning blade's working vibration can be achieved. The controller receives and compares the data from both ends to actively determine the wear condition of the cleaning blade, ultimately achieving early warning and avoiding resource waste caused by passive maintenance.

Description

Technical Field

[0001] This utility model relates to the field of intelligent maintenance technology for printing equipment, and in particular to a cleaning blade life warning device. Background Technology

[0002] As a core output device for modern office work and information processing, the image quality of a printer directly depends on the precise coordination of its internal key components. Taking a laser printer as an example, its working principle involves electrostatically adsorbing toner onto the surface of the photosensitive drum to form a latent image, which is then transferred and fixed to complete the printing process. In this process, the cleaning blade is a crucial component for controlling the toner layer thickness. Through elastic contact with the photosensitive drum, it precisely scrapes away excess toner and evenly distributes residual toner, thus ensuring the clarity and color accuracy of the printed image. However, as a consumable part directly involved in friction, the cleaning blade gradually fails due to mechanical wear and toner erosion after prolonged use, ultimately leading to a decline in print quality.

[0003] In existing technologies, printer maintenance strategies generally adopt a "passive response" model, meaning the cleaning blade needs to continue operating until obvious abnormalities occur in the printing quality. Users or maintenance personnel can only indirectly judge the equipment status by observing the final output, and cannot directly monitor the actual wear and tear of the cleaning blade. This model has significant limitations. By the time the printing quality has deteriorated to the point of requiring manual intervention, resources such as paper and toner have often been wasted. Furthermore, the causes of print quality problems are complex, and it is difficult to quickly locate the failure of the cleaning blade simply by inferring from the results, leading to a time-consuming and untargeted repair process.

[0004] In summary, existing printer equipment lacks proactive monitoring methods for long-term wear and tear components such as cleaning blades during operation, resulting in delayed maintenance, low resource utilization, and inefficient troubleshooting. Utility Model Content

[0005] To overcome the shortcomings of delayed maintenance and lack of detection, this utility model provides a cleaning knife life warning device, which aims to solve the above-mentioned problems.

[0006] A cleaning blade life warning device includes a cleaning blade and a connecting plate. The cleaning blade is connected to a mounting bracket and is mounted inside a printer via the mounting bracket. A bent fixing plate is connected to the top of the mounting bracket. An adjusting rod is threadedly connected to the lower end of the bent fixing plate. A guide rod is slidably connected to the lower end of the fixing plate. The middle part of the connecting plate is rotatably connected to the end of the adjusting rod. The connecting plate is fixedly connected to the end of the guide rod. A vibration sensor is installed on the side of the connecting plate facing the cleaning blade. An acoustic auxiliary component for picking up working sounds to assist in judging damage is provided in the middle of the cleaning blade.

[0007] As a further preferred embodiment, the acoustic auxiliary component includes an outer frame with screws threaded to both ends of the outer frame. The outer frame is connected to the side of the cleaning blade via the screws, and a sound sensor is disposed inside the outer frame, with the sound sensor in close contact with the side of the cleaning blade.

[0008] As a further preferred embodiment, a fastening pad is connected inside the outer frame, and the fastening pad is pressed and engaged with the sound sensor.

[0009] As a further preferred embodiment, a buffer pad is connected to one end of the adjusting rod that is inserted into the connecting plate.

[0010] As a further preferred embodiment, a controller is mounted on the top of the mounting bracket, and the controller is wiredly connected to the vibration sensor and the sound sensor.

[0011] As a further preferred embodiment, a telescopic pad is provided between the connecting plate and the fixing plate, and the telescopic pad covers the guide rod and the adjusting rod.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. By adjusting the position of the vibration sensor through the adjusting rod, guide rod and connecting plate, the vibration of the cleaning knife can be collected in real time and accurately. The controller receives and compares the data from both ends, and actively judges the wear of the cleaning knife, so as to achieve early warning and avoid resource waste caused by passive maintenance.

[0014] 2. By combining the sound sensor with the elastic compression of the fastening pad, the working sound of the cleaning knife is efficiently picked up. The controller matches the friction sound with the preset failure model. If it is similar to the sound of a known failed cleaning knife, it is cross-validated with vibration data to improve the accuracy of status judgment and avoid misjudgment. 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 fixing plate and the connecting plate of this utility model.

[0017] Figure 3 This is a cross-sectional view of the mounting structure of the sound sensor and outer frame of this utility model.

[0018] The components are: 1-mounting bracket, 2-cleaning knife, 3-fixing plate, 4-connecting plate, 41-guide rod, 5-adjusting rod, 6-vibration sensor, 7-outer frame, 8-fixing screw, 9-sound sensor, 10-fastening pad, 11-buffer pad, 12-controller, 13-telescopic pad. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "setting," "installing," "connecting," and "linking" 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 the present invention based on the specific circumstances.

[0020] Example: A cleaning knife life warning device, such as Figures 1-3 As shown, the device includes a mounting frame 1, a cleaning blade 2, a fixing plate 3, a connecting plate 4, a guide rod 41, an adjusting rod 5, a vibration sensor 6, and an acoustic auxiliary component. The cleaning blade 2, as the core detection object, is fixed inside the printer via the mounting frame 1. The top of the mounting frame 1 integrates a bent fixing plate 3, forming the main support frame of the device. The lower end of the bent fixing plate 3 is threadedly connected to the adjusting rod 5. Two guide rods 41 are slidably connected to the lower end of the fixing plate 3. The middle part of the connecting plate 4 is rotatably connected to the end of the adjusting rod 5, and the two ends on the front side are fixedly connected to the rear end of the guide rod 41, forming an adjustment mechanism that can move along the axial direction of the guide rod 41. A vibration sensor 6 is installed on the side of the connecting plate 4 facing the cleaning blade 2. The vibration sensor 6 collects the vibration signal of the cleaning blade 2 in real time during operation. An acoustic auxiliary component is set in the middle of the cleaning blade 2 to pick up the working sound and assist in judging damage.

[0021] like Figure 1 and Figure 3 As shown, the acoustic auxiliary component includes an outer frame 7, fixing screws 8, and a sound sensor 9. The outer frame 7 is threaded with fixing screws 8 at both ends and is connected to the side of the cleaning blade 2 by fixing screws 8. The sound sensor 9 is installed inside the outer frame 7 and is in close contact with the side of the cleaning blade 2. The sound sensor 9 can efficiently pick up the acoustic features when the cleaning blade 2 vibrates and form cross-validation with the vibration data.

[0022] like Figure 3 As shown, it also includes a fastening pad 10. The fastening pad 10 is connected inside the outer frame 7 and is pressed and engaged with the sound sensor 9.

[0023] like Figure 2 As shown, it also includes a buffer pad 11. One end of the adjusting rod 5 inserted into the connecting plate 4 is connected to the buffer pad 11, which absorbs the mechanical impact between the adjusting rod 5 and the connecting plate 4.

[0024] like Figure 1As shown, it also includes a controller 12. The controller 12 is installed on the top of the mounting bracket 1. The controller 12 is wired to the vibration sensor 6 and the sound sensor 9. The vibration sensor 6 and the sound sensor 9 transmit data to the controller 12. The controller 12 receives and stores the real-time data of the vibration sensor 6 and the sound sensor 9. By comparing the vibration deviation and sound pattern similarity at both ends through an algorithm, and combining the imported existing failure model, the remaining lifespan of the cleaning knife 2 is comprehensively determined.

[0025] like Figure 1 As shown, it also includes a telescopic pad 13. A telescopic pad 13 is provided between the connecting plate 4 and the fixing plate 3. The telescopic pad 13 wraps around the guide rod 41 and the adjusting rod 5. The telescopic pad 13 dynamically wraps around the connecting area to prevent dust from entering.

[0026] Before installing the cleaning blade 2 into the printer, the detection position of the vibration sensor 6 needs to be pre-adjusted. The operator rotates the adjusting rod 5, utilizing its threaded connection with the fixing plate 3, to push the connecting plate 4 smoothly along the guide rod 41. During the movement of the connecting plate 4, the buffer pad 11 absorbs the mechanical impact when the end of the adjusting rod 5 contacts the connecting plate 4 through its own elastic deformation, preventing structural damage caused by hard compression. As the connecting plate 4 gradually approaches the surface of the cleaning blade 2, the telescopic pad 13 stretches synchronously with the displacement of the connecting plate 4, always covering the gap area between the connecting plate 4 and the fixing plate 3, forming a dynamic seal. By repeatedly adjusting the rotation angle of the adjusting rod 5, the vibration sensors 6 on both sides are finally evenly attached to both ends of the cleaning blade 2, ensuring accurate capture of the vibration signals during the operation of the cleaning blade 2.

[0027] When the cleaning blade 2 enters the toner scraping state, its edge continuously rubs against the toner layer on the surface of the photosensitive drum. Uneven toner distribution and changes in the amount of toner adsorbed by the cleaning blade 2 itself cause fluctuations in scraping resistance, which in turn causes irregular vibrations in the cleaning blade 2. At this time, the vibration sensors 6 on both sides collect the vibration frequency and amplitude data at both ends of the cleaning blade 2 in real time and transmit the signals to the controller 12. The controller 12 dynamically compares the two sets of data through a built-in algorithm: if a significant deviation in the vibration parameters at both ends is detected over a long period of time, and the cleaning blade 2 still cannot return to a stable state after completing multiple scraping cycles, it is determined that the edge of the cleaning blade 2 has undergone irreversible wear, and its scraping performance cannot meet the printing quality requirements, requiring the user to replace it.

[0028] To further verify the status of the cleaning blade 2, the sound sensor 9 operates synchronously. Through the elastic compression of the fastening pad 10, it remains firmly in contact with the side of the cleaning blade 2. Even if the cleaning blade 2 experiences slight displacement due to vibration, the deformation recovery capability of the fastening pad 10 ensures stable contact between the sound sensor 9 and the surface of the cleaning blade 2. The sound sensor 9 collects the frictional sound wave signal during the operation of the cleaning blade 2, extracts the characteristic frequency and acoustic pattern, and transmits it to the controller 12. The controller 12 matches and analyzes the current acoustic data with a pre-stored acoustic database of failed cleaning blades 2. If the similarity exceeds a threshold, it combines vibration data for cross-verification, ultimately confirming the end of the cleaning blade 2's lifespan and sending a replacement warning command to the printer host via the interface.

[0029] 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. A cleaning blade lifespan warning device, characterized in that: The device includes a cleaning blade (2) and a connecting plate (4). The cleaning blade (2) is connected to a mounting bracket (1). The cleaning blade (2) is installed inside the printer via the mounting bracket (1). A bent fixing plate (3) is connected to the top of the mounting bracket (1). An adjusting rod (5) is threaded to the lower end of the bent fixing plate (3). A guide rod (41) is slidably connected to the lower end of the fixing plate (3). The middle part of the connecting plate (4) is rotatably connected to the end of the adjusting rod (5). The connecting plate (4) is fixedly connected to the end of the guide rod (41). A vibration sensor (6) is installed on the side of the connecting plate (4) facing the cleaning blade (2). A sound-assisted component for picking up working sounds to assist in judging damage is provided in the middle of the cleaning blade (2).

2. The cleaning blade life warning device as described in claim 1, characterized in that: The acoustic auxiliary component includes an outer frame (7), with fixing screws (8) threaded to both ends of the outer frame (7). The outer frame (7) is connected to the side of the cleaning knife (2) by the fixing screws (8). A sound sensor (9) is provided inside the outer frame (7) and is in close contact with the side of the cleaning knife (2).

3. The cleaning blade life warning device as described in claim 2, characterized in that: The outer frame (7) is connected to a fastening pad (10), which is pressed against the sound sensor (9).

4. The cleaning blade life warning device as described in claim 3, characterized in that: The end of the adjusting rod (5) inserted into the connecting plate (4) is connected to a buffer pad (11).

5. The cleaning blade life warning device as described in claim 4, characterized in that: A controller (12) is mounted on the top of the mounting bracket (1), and the controller (12) is wiredly connected to the vibration sensor (6) and the sound sensor (9).

6. The cleaning knife life warning device as described in claim 5, characterized in that: A telescopic pad (13) is provided between the connecting plate (4) and the fixing plate (3), and the telescopic pad (13) covers the guide rod (41) and the adjusting rod (5).

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