Scraper device with elastic adjustment mechanism

Abstract

This utility model discloses a scraper device with an elastic adjustment mechanism, including a toner cartridge, a fixing roller rotatably connected to the toner cartridge, a lifting block and a lifting plate slidably connected to the toner cartridge, a scraper body mounted on the lifting block, and the scraper body contacting the lower surface of the fixing roller when the lifting block rises; a first compression spring connects the lifting block and the lifting plate, and the pressure of the scraper body on the fixing roller changes when the distance between the lifting plate and the lifting block changes; a second slide rail is provided on the side wall of the lifting block, and a lifting groove is provided on the toner cartridge, with the lifting block slidably connected in the lifting groove via the second slide rail; support plates are provided at the bottom of both lifting blocks, and the support plates are connected to the lifting plate via the first compression spring; this utility model relates to the technical field of scraper devices; it can adjust the pressure of the scraper on the surface of the fixing roller in multiple levels according to different needs, thereby changing the thickness of the powder on the surface of the fixing roller.

Description

Technical Field

[0001] This utility model relates to the technical field of scraper devices, specifically a scraper device with an elastic adjustment mechanism. Background Technology

[0002] The printer toner cartridge is a core consumable for laser printers, responsible for storing toner and completing the development and imaging process. Its internal structure includes components such as the fuser roller, photosensitive drum, toner hopper, and waste toner hopper. It uses electrostatic adsorption to precisely transfer toner onto the paper. The doctor blade is a crucial adjustment component within the toner cartridge. The doctor blade ensures a uniform toner layer thickness on the fuser roller surface, and its precision directly affects print quality—improper adjustment can lead to dark backgrounds, missed prints, or scratches on the photosensitive drum. High-quality doctor blades use wear-resistant materials and, combined with a flexible adjustment mechanism, can significantly improve toner cartridge life and printing stability.

[0003] Currently, in most existing toner cartridge designs, the scraper is usually rigidly fixed inside the toner cartridge by screws, and the contact pressure between it and the fuser roller is a fixed value, lacking dynamic adjustment capability, thus making it impossible to adjust the thickness of the toner layer on the fuser roller according to different needs.

[0004] Therefore, this utility model provides a scraper device with an elastic adjustment mechanism to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a scraper device with an elastic adjustment mechanism, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a scraper device with an elastic adjustment mechanism, comprising a toner cartridge, a fixing roller rotatably connected to the toner cartridge, a lifting block and a lifting plate slidably connected to the toner cartridge, a scraper body mounted on the lifting block, and the scraper body contacting the lower surface of the fixing roller when the lifting block rises; a first compression spring connecting the lifting block and the lifting plate, and the pressure of the scraper body on the fixing roller changing when the distance between the lifting plate and the lifting block changes.

[0007] Preferably, the side wall of the lifting block is provided with a second slide rail, the powder box is provided with a lifting groove, and the lifting block is slidably connected in the lifting groove through the second slide rail.

[0008] Preferably, the bottom of the lifting blocks on both sides is provided with a support plate, and the support plate is connected to the lifting plate by a first compression spring.

[0009] Preferably, the powder box is provided with a first slide rail, and the lifting plate is slidably connected to the first slide rail.

[0010] Preferably, a plug-in block is slidably connected inside the lifting plate, and the powder box has equally spaced snap-fit ​​slots. A second compression spring is connected between the snap-fit ​​slots and the lifting plate. When the plug-in block is inserted into the snap-fit ​​slot, the lifting plate is limited.

[0011] Furthermore, the powder box is provided with a lifting groove, and an adjusting block is slidably connected in the lifting groove.

[0012] Furthermore, connecting rods are rotatably connected to both sides of the adjusting block via rotating shafts, and the other end of the connecting rods is rotatably connected to the bottom of the plug-in block via rotating shafts.

[0013] Preferably, the top of the lifting block has a mounting hole, and the scraper body is mounted in the mounting hole by screws.

[0014] Beneficial effects This invention provides a scraper device with an elastic adjustment mechanism. Compared with the prior art, it has the following advantages: (1) The scraper device with elastic adjustment mechanism is equipped with a lifting plate, a lifting block, a first compression spring and a support plate. By changing the distance between the lifting plate and the support plate, the pressure of the first compression spring on the support plate can be adjusted, thereby changing the squeezing force of the scraper body on the fixing roller, and thus changing the thickness of the powder on the surface of the fixing roller according to different needs.

[0015] (2) The scraper device with elastic adjustment mechanism can adjust the height of the lifting plate in multiple positions by setting a snap-fit ​​groove, a plug-in block, a second compression spring, a connecting rod and an adjustment block, and can adjust the pressure of the first compression spring in multiple positions according to different needs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a schematic diagram of the structure of the support plate and the lifting plate in this utility model; Figure 4 This is a utility model Figure 3 A magnified structural diagram of point A in the middle.

[0017] In the diagram: 1. Toner box; 11. Fixing roller; 12. First slide rail; 13. Snap-fit ​​groove; 14. Lifting slide rail; 15. Lifting groove; 2. Support plate; 21. Scraper body; 22. Lifting block; 221. Mounting hole; 222. Second slide rail; 3. Lifting plate; 31. Connecting rod; 32. First compression spring; 33. Second compression spring; 34. Insertion block; 4. Adjusting block. Detailed Implementation

[0018] 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.

[0019] Example 1: Please see Figure 1-4 A scraper device with an elastic adjustment mechanism includes a toner cartridge 1, a fixing roller 11 rotatably connected to the toner cartridge 1, a lifting block 22 and a lifting plate 3 slidably connected to the toner cartridge 1, a scraper body 21 mounted on the lifting block 22, and when the lifting block 22 rises, the scraper body 21 contacts the lower surface of the fixing roller 11; a first compression spring 32 is connected between the lifting block 22 and the lifting plate 3, and when the distance between the lifting plate 3 and the lifting block 22 changes, the pressure of the scraper body 21 on the fixing roller 11 changes.

[0020] In this invention, during fine graphic output, the powder layer on the fixing roller 11 is thinned to avoid blurred lines or edge bleeding. For lower resolution graphic output, the powder layer on the fixing roller 11 can be appropriately thickened to make the printed lines darker. However, the position of the conventional doctor blade body 21 is fixed and difficult to adjust, thus making it impossible to change the thickness of the powder on the fixing roller 11. This device can change the height of the doctor blade body 21 by setting a lifting and sliding lifting block 22. By setting a lifting and sliding lifting plate 3 and setting a first compression spring 32 between the lifting plate 3 and the lifting block 22, the distance between the lifting plate 3 and the lifting block 22 can be changed by sliding the lifting plate 3, thereby changing the elasticity of the first compression spring 32 and thus changing the pressure of the doctor blade body 21 on the fixing roller 11. The thickness of the powder after the doctor blade body 21 scrapes the surface of the fixing roller 11 is different due to different pressures, thus allowing for adjustment according to different needs.

[0021] Example 2: Please see Figure 1-4This embodiment provides a technical solution based on Embodiment 1: a second slide rail 222 is provided on the side wall of the lifting block 22, and a lifting groove 14 is provided on the powder box 1. The lifting block 22 is slidably connected in the lifting groove 14 through the second slide rail 222. Support plates 2 are provided at the bottom of the two lifting blocks 22. The support plates 2 are connected to the lifting plate 3 through a first compression spring 32. A first slide rail 12 is provided on the powder box 1, and the lifting plate 3 is slidably connected on the first slide rail 12. A plug-in block 34 is slidably connected inside the lifting plate 3. A section is provided on the powder box 1. The snap-fit ​​slots 13 are evenly spaced, and a second compression spring 33 is connected between the snap-fit ​​slots 13 and the lifting plate 3. When the plug block 34 is inserted into the snap-fit ​​slot 13, the lifting plate 3 is limited. The powder box 1 is provided with a lifting groove 15. An adjusting block 4 is slidably connected in the lifting groove 15. The two sides of the adjusting block 4 are rotatably connected to the connecting rod 31 through a rotating shaft. The other end of the connecting rod 31 is rotatably connected to the bottom of the plug block 34 through a rotating shaft. The top of the lifting block 22 is provided with a mounting hole 221. The scraper body 21 is installed in the mounting hole 221 by screws.

[0022] In this utility model, the snap-fit ​​slots 13 are evenly distributed. By setting multiple sets of snap-fit ​​slots 13, the height of the lifting plate 3 can be adjusted in multiple levels. The pressure of the first compression spring 32 can be adjusted in multiple levels according to the needs. When the lifting plate 3 slides to the position corresponding to the snap-fit ​​slot 13, the plug block 34 automatically inserts into the snap-fit ​​slot 13 under the action of the snap-fit ​​block 34 to complete the limit, so that the lifting plate 3 is locked and will not move down. The plug end of the plug block 34 is provided with a slope, so that when the user pushes the lifting plate 3 to move up, the snap-fit ​​slot 13 can push the plug block 34 out of the snap-fit ​​slot 13 by squeezing the slope of the plug block 34, without having to manually release the limit of the plug block 34. The adjusting block 4 and the plug-in block 34 are rotatably connected by a connecting rod 31 through a rotating shaft. When the adjusting block 4 moves down, it can simultaneously pull the plug-in blocks 34 on both sides to move towards the center, thereby pulling the plug-in blocks 34 out of the snap-fit ​​groove 13 and driving the lifting plate 3 to move down under the action of the downward pulling force, thereby increasing the distance between the lifting plate 3 and the support plate 2. The lifting block 22 has a mounting hole 221 with a thread inside. The user can install the scraper body 21 and the lifting block 22 by screwing it into the mounting hole 221.

[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0024] During installation, the user first installs the scraper body 21 onto the lifting block 22 using screws. Then, by pushing the lifting plate 3 upward or pulling the adjusting block 4 downward, the height of the lifting plate 3 can be adjusted, thereby changing the squeezing force of the first compression spring 32 on the support plate 2. After adjustment, the toner cartridge 1 can be installed into the printer for normal use.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scraper device with an elastic adjustment mechanism, comprising a powder box (1), wherein a fixing roller (11) is rotatably connected to the powder box (1), characterized in that: The powder box (1) is slidably connected to a lifting block (22) and a lifting plate (3). The lifting block (22) is equipped with a scraper body (21). When the lifting block (22) rises, the scraper body (21) contacts the lower surface of the fixing roller (11). A first compression spring (32) is connected between the lifting block (22) and the lifting plate (3). When the distance between the lifting plate (3) and the lifting block (22) changes, the pressure of the scraper body (21) on the fixing roller (11) changes.

2. The scraper device with an elastic adjustment mechanism according to claim 1, characterized in that: The side wall of the lifting block (22) is provided with a second slide rail (222), and the powder box (1) is provided with a lifting slide groove (14). The lifting block (22) is slidably connected in the lifting slide groove (14) through the second slide rail (222).

3. The scraper device with an elastic adjustment mechanism according to claim 1, characterized in that: The bottom of the lifting blocks (22) on both sides is provided with a support plate (2), and the support plate (2) is connected to the lifting plate (3) through a first compression spring (32).

4. The scraper device with an elastic adjustment mechanism according to claim 1, characterized in that: The powder box (1) is provided with a first slide rail (12), and the lifting plate (3) is slidably connected to the first slide rail (12).

5. The scraper device with an elastic adjustment mechanism according to claim 1, characterized in that: The lifting plate (3) is slidably connected with a plug block (34), and the powder box (1) is provided with equally spaced snap-fit ​​grooves (13). A second compression spring (33) is connected between the snap-fit ​​grooves (13) and the lifting plate (3). When the plug block (34) is inserted into the snap-fit ​​grooves (13), the lifting plate (3) is limited.

6. A scraper device with an elastic adjustment mechanism according to claim 5, characterized in that: The powder box (1) is provided with a lifting groove (15), and an adjusting block (4) is slidably connected in the lifting groove (15).

7. A scraper device with an elastic adjustment mechanism according to claim 6, characterized in that: The two sides of the adjusting block (4) are rotatably connected to the connecting rod (31) via a rotating shaft, and the other end of the connecting rod (31) is rotatably connected to the bottom of the plug block (34) via a rotating shaft.

8. A scraper device with an elastic adjustment mechanism according to claim 1, characterized in that: The top of the lifting block (22) is provided with a mounting hole (221), and the scraper body (21) is installed in the mounting hole (221) by screws.

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