A cleaning scraper assembly

Abstract

The utility model discloses a cleaning scraper assembly, comprising a knife frame, a front knife body and a rear knife body, wherein the front knife body and the rear knife body are arranged on both sides of the knife frame, and the rear knife body is fixedly connected to the knife frame; a front knife body mounting structure is arranged on the knife frame; the front knife body mounting structure comprises a guide frame fixedly mounted on both sides of the knife frame, the guide frame is provided with a guide groove directly opposite, the two sides of the front knife body are slidably matched with the guide groove, the guide frame is fixedly connected to a mounting frame, and a knife body pressing structure is mounted on the mounting frame. The cleaning scraper assembly has the advantages of being able to better clean the carbon powder on the surface of the photosensitive drum, being convenient to clean the carbon powder, and having a long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a cleaning scraper assembly. Background Art

[0002] With the continuous development of laser printing technology, the requirements for printing speed and printing quality are getting higher and higher, which has led to the increasing popularity of the use of chemical polymer toner. Chemical toner has a high degree of sphericity and a small particle size distribution, which brings high quality to the printed images.

[0003] However, chemical toner with a high degree of sphericity and a small particle size distribution will also make it difficult to clean the residual toner on the surface of the photosensitive drum, causing the charging roller to be contaminated by the residual toner on the surface of the photosensitive drum. As the number of printed pages increases, the toner adhered to the surface of the charging roller continues to accumulate, causing the charging roller to charge the photosensitive drum unevenly and the printed graphics to have uneven concentration. Moreover, as the degree of sphericity of the toner particles becomes higher and higher and the particle size becomes smaller and smaller, it becomes difficult for a traditional cleaning scraper (with only one blade) to clean the residual toner on the surface of the photosensitive drum. As the number of printed pages increases, the surface of the charging roller is constantly contaminated by toner, the charging effect is weakened, and the uneven printing density becomes more serious.

[0004] Chinese patent CN200920030435.5 discloses a cleaning scraper, which consists of a knife holder and two blades, which are respectively installed on both sides of the knife holder, and the upper blade and the lower blade do not contact each other. However, although the above cleaning scraper can clean both sides of the photosensitive drum, the carbon powder after cleaning will dock on the blade, or even be located between the upper blade and the lower blade, so it is necessary to clean the carbon powder between the upper blade and the lower blade. The distance between the upper blade and the lower blade is small, which is inconvenient to clean. It is necessary to disassemble the knife holder, pour out the carbon powder, and then wipe it with a brush or rag, which is time-consuming and laborious. Chinese patent CN202321579411.1 discloses a cleaning scraper assembly, whose front knife body is rotatably connected to the knife holder. When it is necessary to clean the carbon powder, it does not need to disassemble the knife holder, and the front knife body can be rotated to achieve it. However, the front knife body is in contact with the surface of the photosensitive drum, and multiple rotations will result in poor cleaning effect of the front knife body, affecting the service life. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a cleaning scraper assembly that can better clean the carbon powder on the surface of the photosensitive drum, is convenient for cleaning the carbon powder, and has a long service life.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A cleaning scraper assembly comprises a blade holder, a front blade body and a rear blade body, wherein the front blade body and the rear blade body are arranged on both sides of the blade holder, and the rear blade body is fixedly connected to the blade holder; a front blade body mounting structure is arranged on the blade holder;

[0008] The front blade installation structure includes guide frames fixedly installed on both sides of the blade holder, the guide frames are provided with guide grooves opposite to each other, the two sides of the front blade body are slidably matched with the guide grooves, the guide frames are fixedly connected to the installation frame, and the blade body clamping structure is installed on the installation frame.

[0009] In this way, the knife holder provides an installation base for the front knife body and the rear knife body. When in use, the front knife body and the rear knife body are used to clean both sides of the photosensitive drum, thereby improving the cleaning effect. When it is necessary to clean the carbon powder, the knife body pressing structure is released, the front knife body moves away from the photosensitive drum, and the guide groove guides the movement of the front knife body. Then, the carbon powder between the front knife body and the rear knife body is cleaned, and the surface of the rear knife body is wiped. After the front knife body is reset, the knife body pressing structure presses the knife body, and the surface of the front knife body is wiped to complete the cleaning of the scraper assembly. There is no need to disassemble the knife holder, which is convenient for operation and saves time and effort.

[0010] Among them, the tool body clamping structure includes two sliding grooves opened on the mounting frame, a sliding rod is slidably fitted in the sliding groove, a knob is fixed to the outer end of the sliding rod, a pressure plate is fixed to the inner end of the sliding rod, a bolt is fixed to the pressure plate, a clearance hole is arranged on the front tool body facing the bolt, and a threaded hole is opened on the tool holder to be threadedly connected to the bolt.

[0011] Wherein, the mounting frame is provided with a through slot connected to the slide slot, and the size of the through slot is larger than the diameter of the slide rod.

[0012] Wherein, a handle is fixed on the upper end of the front blade body.

[0013] Wherein, the rear tool body is fixedly connected to the tool holder by screws.

[0014] In summary, the cleaning scraper assembly has the advantages of being able to better clean the carbon powder on the surface of the photosensitive drum, being easy to clean the carbon powder, and having a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a cleaning scraper assembly.

[0016] Figure 2 for Figure 1 Schematic diagram of another orientation.

[0017] Figure 3 for Figure 1 Schematic diagram of the cleaning state.

[0018] Figure 4 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0019] Figure 5 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0020] Figure 6 Schematic diagram of the tool body clamping structure. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] like Figure 1-6 As shown, a cleaning scraper assembly comprises a blade holder 1, a front blade body 2 and a rear blade body 3, wherein the front blade body and the rear blade body are arranged on both sides of the blade holder, and the rear blade body is fixedly connected to the blade holder; a front blade body mounting structure is arranged on the blade holder;

[0023] The front blade installation structure includes guide frames 4 fixedly installed on both sides of the blade holder, the guide frames are provided with guide grooves opposite to each other, the two sides of the front blade body are slidably matched with the guide grooves, the guide frames are fixedly connected to the installation frame 2, and the blade body clamping structure is installed on the installation frame.

[0024] In this way, the knife holder provides an installation base for the front knife body and the rear knife body. When in use, the front knife body and the rear knife body are used to clean both sides of the photosensitive drum, thereby improving the cleaning effect. When it is necessary to clean the carbon powder, the knife body pressing structure is released, the front knife body moves away from the photosensitive drum, and the guide groove guides the movement of the front knife body. Then, the carbon powder between the front knife body and the rear knife body is cleaned, and the surface of the rear knife body is wiped. After the front knife body is reset, the knife body pressing structure presses the knife body, and the surface of the front knife body is wiped to complete the cleaning of the scraper assembly. There is no need to disassemble the knife holder, which is convenient for operation and saves time and effort.

[0025] During implementation, the tool body clamping structure includes two slide grooves provided on the mounting frame, a slide rod 6 is slidably fitted in the slide groove, a knob 7 is fixed to the outer end of the slide rod, a pressure plate 8 is fixed to the inner end of the slide rod, a bolt 9 is fixed to the pressure plate, a clearance hole is provided in the front tool body directly opposite to the bolt, and a threaded hole connected to the bolt by thread is provided on the tool holder. By providing the slide groove, when the front tool body moves, the bolt does not need to be separated from the clearance hole, which is convenient for guiding and positioning the slide rod.

[0026] During implementation, the mounting frame is provided with a through slot 10 communicating with the slide slot, and the size of the through slot is larger than the diameter of the slide rod, so as to facilitate the slide rod to enter the slide slot.

[0027] During implementation, a handle 11 is fixed to the upper end of the front blade body, which is convenient for lifting the front blade body.

[0028] During implementation, the rear blade body and the blade holder are fixedly connected by screws, which is convenient for connection.

[0029] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A cleaning scraper assembly, comprising a blade holder, a front blade body and a rear blade body, wherein the front blade body and the rear blade body are arranged on both sides of the blade holder, and the rear blade body is fixedly connected to the blade holder; characterized in that: The tool holder is provided with a front tool body mounting structure; The front blade installation structure includes guide frames fixedly installed on both sides of the blade holder, the guide frames are provided with guide grooves opposite to each other, the two sides of the front blade body are slidably matched with the guide grooves, the guide frames are fixedly connected to the installation frame, and the blade body clamping structure is installed on the installation frame.

2. A cleaning blade assembly according to claim 1, characterized in that: The tool body clamping structure includes two slide grooves opened on the mounting frame, a slide rod is slidably fitted in the slide groove, a knob is fixed to the outer end of the slide rod, a pressure plate is fixed to the inner end of the slide rod, a bolt is fixed to the pressure plate, a clearance hole is provided in the front tool body facing the bolt, and a threaded hole connected to the bolt by thread is opened on the tool holder.

3. A cleaning blade assembly according to claim 2, characterized in that: The mounting frame is provided with a through slot connected to the slide slot, and the size of the through slot is larger than the diameter of the slide rod.

4. A cleaning blade assembly according to claim 1, characterized in that: A handle is fixed on the upper end of the front blade body.

5. The cleaning blade assembly according to claim 1, characterized in that: The rear tool body is fixedly connected to the tool holder by screws.

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