Metal powder outletting knife and laser printer

Abstract

The utility model relates to the technical field of printer, disclose a metal powder outlet knife, install on the installation platform in the selenium drum shell, and the installation platform includes the first installation surface and the second installation surface of vertical setting, and the both ends of first installation surface all are provided with threaded hole, its characterized in that, metal powder outlet knife includes: tool rest, tool rest is L -shaped, and tool rest is pasted with the first installation surface and the second installation surface, and the sleeve is fixed with the threaded hole opposite tool rest, and the inner hole of sleeve is communicated with threaded hole, blade, bond in tool rest, clamp, clamp is L -shaped, and clamp is pasted with tool rest, and the through -hole is set up in the sleeve opposite clamp and penetrates, and the outer end of sleeve is located in the through -hole, locking bolt passes through the sleeve and is connected with threaded hole, and the diameter size of the circle of the end of locking bolt is greater than the diameter size of through -hole. Through the setting of clamp and tool rest, limit the blade, improve the stress capacity of blade, prolong the life.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, specifically to a metal toner dispenser and a laser printer. Background Technology

[0002] The metal toner ejector blade is a key component installed inside the drum unit of a laser printer. Its core function is to precisely control the thickness of the toner layer on the surface of the magnetic roller sleeve, directly affecting the print quality. Currently used metal toner ejector blades consist of a blade holder and a blade. The blade is bonded to the blade holder, and both ends of the blade holder are fixed inside the drum unit with screws.

[0003] However, the current blade holder is only connected to the drum shell by screws. During use, the blade is very prone to deformation, curling and / or shaking, which seriously affects the function of the toner blade. This can lead to toner leakage and uneven toner thickness during printing, affecting the normal use of the laser printer. Summary of the Invention

[0004] The purpose of this invention is to provide a metal powder-discharging blade that increases the installation strength and stability of the blade, and extends its service life.

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

[0006] A metal powder dispensing blade is installed on a mounting platform inside a toner cartridge housing. The mounting platform includes a vertically arranged first mounting surface and a second mounting surface, with threaded holes at both ends of the first mounting surface. The metal powder dispensing blade includes:

[0007] The tool holder is L-shaped and fits against the first and second mounting surfaces. A sleeve is fixed to the tool holder opposite the threaded hole, and the inner hole of the sleeve is connected to the threaded hole.

[0008] The blade is glued to the blade holder;

[0009] The pressure plate is L-shaped and fits against the tool holder. A through hole is provided on the pressure plate directly opposite the sleeve, and the outer end of the sleeve is located inside the through hole.

[0010] The locking bolt passes through the sleeve 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 hole.

[0011] Compared to the simple blade holder and blade structure of existing metal powder dispensing knives, this technical solution adopts a blade holder, blade, and pressure plate structure to form a "sandwich" structure. By using the blade holder and pressure plate, the blade is limited, the blade's stress resistance is improved, and the blade's deformation is reduced, allowing the metal powder dispensing knife to better perform its function.

[0012] During installation, the blade holder is placed on the mounting platform, with the blade holder fitting against the first and second mounting surfaces at a 90-degree angle. The blade is attached to the blade holder, and the pressure plate is placed on the blade holder. The blade is located between the blade holder and the pressure plate. Locking bolts are used to pass through the sleeve and connect to the threaded hole to achieve the fixed installation of the pressure plate, blade holder, and toner cartridge shell.

[0013] Preferably, the second mounting surface of the mounting platform is provided with a positioning hole, and the tool holder is fixedly mounted with a positioning pin that engages with the positioning hole.

[0014] Preferably, a limiting block and a limiting frame are fixed at both ends of the drum shell, respectively. The limiting frame is L-shaped, and limiting grooves for the tool holder to pass through are formed between the limiting block and the first mounting surface, and between the limiting frame and the first mounting surface.

[0015] Preferably, the tool holder has a protruding rib on the upper surface corresponding to the second mounting surface, and the pressure plate has a sliding groove that slides with the protruding rib.

[0016] Preferably, the dimension of the end of the rib furthest from the tool holder is larger than the dimension of the end of the rib connected to the tool holder.

[0017] Preferably, a gasket is provided between the locking bolt and the pressure plate.

[0018] Preferably, a sealing gasket is bonded to the front of the toner cartridge shell, and the tool holder and the sealing gasket are pressed tightly together.

[0019] Preferably, the outer side of the pressure plate is provided with several reinforcing ribs at intervals.

[0020] Another objective of this invention is to provide a laser printer that extends its service life and provides high print quality.

[0021] To achieve another objective of this utility model, the following technical solution is adopted:

[0022] A laser printer, including the aforementioned metal toner ejector blade.

[0023] The beneficial effects of this utility model are: by setting up the pressure plate and the blade holder, the blade is limited, the force-bearing capacity of the blade is improved, and the service life is extended. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the powder dispensing blade and the toner cartridge shell.

[0025] Figure 2 for Figure 1 A schematic diagram with the magnetic roller removed.

[0026] Figure 3 This is a schematic diagram of the toner cartridge shell.

[0027] Figure 4 for Figure 2 A schematic diagram of the split structure.

[0028] Figure 5 This is a schematic diagram of the tool holder structure.

[0029] Figure 6 This is a schematic diagram of the pressure plate structure. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Example 1:

[0032] like Figures 1 to 6 As shown, a metal powder dispensing blade is installed on a mounting platform inside a toner cartridge housing 1. The mounting platform includes a vertically arranged first mounting surface 21 and a second mounting surface 22. Threaded holes 3 are provided at both ends of the first mounting surface 21. The metal powder dispensing blade includes:

[0033] The tool holder 4 is L-shaped and fits against the first mounting surface 21 and the second mounting surface 22. A sleeve 5 is fixed to the threaded hole 3 directly opposite the tool holder 4, and the inner hole of the sleeve 5 is connected to the threaded hole 3.

[0034] Blade 6 is bonded to the tool holder 4;

[0035] The pressure plate 7 is L-shaped and fits against the knife holder 4. The pressure plate 7 has a through hole 71 directly opposite the sleeve 5, and the outer end of the sleeve 5 is located inside the through hole 71.

[0036] The locking bolt 9 passes through the sleeve 5 and connects to the threaded hole 3. The diameter of the circle containing the end of the locking bolt 9 is larger than the diameter of the through hole 71.

[0037] Compared to the simple blade holder and blade structure of existing metal powder dispensing knives, this technical solution adopts a structure of blade holder 4, blade 6, and pressure plate 7 to form a "sandwich" structure. The blade holder 4 and pressure plate 7 are used to limit the blade 6, improve the force-bearing capacity of the blade 6, reduce the deformation of the blade 6, and enable the metal powder dispensing knife to better perform its function.

[0038] During installation, the tool holder 4 is placed on the mounting platform, with the tool holder 4 fitting against the first mounting surface 21 and the second mounting surface 22. The first mounting surface 21 and the second mounting surface 22 are set at a 90-degree angle. The blade 6 is glued to the tool holder 4, and the pressure plate 7 is placed on the tool holder 4. The blade 6 is located between the tool holder 4 and the pressure plate 7. The locking bolt 9 is passed through the sleeve 5 and connected to the threaded hole 3 to achieve the fixed installation of the pressure plate 7, the tool holder 4 and the toner cartridge shell 1.

[0039] During implementation, the second mounting surface 22 of the mounting platform has a positioning hole 8, and the tool holder 4 is fixedly mounted with a positioning pin 9 that engages with the positioning hole 8. The positioning hole 8 and the positioning pin 9 ensure that when the tool holder 4 is placed on the mounting platform, the positioning pin 9 is inserted into the positioning hole 8. At this time, the threaded hole 3 and the sleeve 5 are aligned, facilitating assembly and improving assembly accuracy.

[0040] During implementation, limit blocks 10 and limit frames 11 are fixed to both ends of the toner cartridge shell 1, respectively. The limit frame 11 is L-shaped, and limit grooves for the tool holder 4 to pass through are formed between the limit blocks 10 and the first mounting surface 21, and between the limit frame 11 and the first mounting surface 21. The limit blocks 10 and limit frames 11 can be directly injection molded integrally with the toner cartridge shell 1 or separately injection molded and then welded together. Through the setting of the limit blocks 10 and limit frames 11, limit grooves for the tool holder 4 are formed at both ends of the toner cartridge shell 1. During installation, the tool holder 4 slides into the limit groove, and the positioning pin 9 is inserted into the positioning hole 8, with the sleeve 5 aligned with the threaded hole 3. The setting of the limit blocks 10 and limit frames 11 provides a limit for the tool holder 4, preventing it from moving around and improving the installation reliability of the tool holder 4.

[0041] In practice, the tool holder 4 has a protruding rib 12 on the upper surface corresponding to the second mounting surface 22, and the pressure plate 7 has a sliding groove 13 that slides with the protruding rib 12. Through the cooperation of the protruding rib 12 and the sliding groove 13, one side of the pressure plate 7 slides onto the tool holder 4 during installation, making the connection between the pressure plate 7 and the tool holder 4 tighter and more reliable. At the same time, the through hole 71 is directly opposite the sleeve 5, and the end of the sleeve 5 is inserted into the through hole 71.

[0042] In practice, the dimension of the end of the rib 12 furthest from the blade holder 4 is larger than the dimension of the end of the rib 12 connected to the blade holder 4. By forming a barbed limiting structure, the pressure plate 7 can be effectively prevented from separating from the blade holder 4 after sliding assembly, enhancing the connection reliability between the blade holder 4 and the pressure plate 7, avoiding loosening of the fit due to long-term use or vibration, ensuring continuous and stable clamping force, and further extending the service life of the powder discharge blade.

[0043] During implementation, a washer 14 is placed between the locking bolt 9 and the pressure plate 7. This increases the contact area between the bolt end and the pressure plate, evenly distributing the locking force onto the pressure plate 7 and preventing excessive local pressure from causing deformation of the pressure plate 7.

[0044] During implementation, a sealing gasket 15 is bonded to the tool holder 4, and the tool holder 4 and the sealing gasket 15 are tightly pressed together. This fills the assembly gap and prevents toner leakage.

[0045] During implementation, several reinforcing ribs 16 are spaced apart on the outer side of the pressure plate 7. This improves the structural strength and rigidity of the pressure plate 7 and extends the service life of the pressure plate 7 and the overall powder discharge blade.

[0046] Example 2:

[0047] A laser printer includes the aforementioned metal toner ejector blade. This effectively reduces toner leakage, blurry printing, and other problems, improves print quality and operational stability, extends the lifespan of the toner cartridge and the entire printer, and reduces user maintenance costs.

[0048] 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.

[0049] 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.

[0050] 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 metal powder discharge knife, which is installed on a mounting table in a toner cartridge shell (1), the mounting table comprising a first mounting surface (21) and a second mounting surface (22) arranged vertically, and threaded holes (3) are formed at both ends of the first mounting surface (21); characterized in that, Metal powder discharge blades include: The tool holder (4) is L-shaped and fits against the first mounting surface (21) and the second mounting surface (22). A sleeve (5) is fixed to the threaded hole (3) directly opposite the tool holder (4). The inner hole of the sleeve (5) is connected to the threaded hole (3). The blade (6) is attached to the blade holder (4); The pressure plate (7) is L-shaped and fits against the tool holder (4). The pressure plate (7) has a through hole (71) directly opposite the sleeve (5). The outer end of the sleeve (5) is located inside the through hole (71). The locking bolt (9) passes through the sleeve (5) and connects to the threaded hole (3). The diameter of the circle containing the end of the locking bolt (9) is larger than the diameter of the through hole (71).

2. The metal powdering blade according to claim 1, wherein The second mounting surface (22) of the mounting platform has a positioning hole (8), and the tool holder (4) is fixedly mounted with a positioning pin (41) that is inserted into the positioning hole (8).

3. Metal powdering blade according to claim 1 or 2, characterized in that The two ends of the drum shell (1) are respectively fixed with a limiting block (10) and a limiting frame (11). The limiting frame (11) is L-shaped. A limiting groove for the tool holder (4) to pass through is formed between the limiting block (10) and the first mounting surface (21) and between the limiting frame (11) and the first mounting surface (21).

4. The metal powdering blade according to claim 1 or 2, characterized in that, The tool holder (4) has a protruding rib (12) on the upper surface corresponding to the second mounting surface (22), and the pressure plate (7) has a sliding groove (13) that slides with the rib (12).

5. The metal powdering blade according to claim 4, wherein The dimension of the end of the rib (12) away from the tool holder (4) is greater than the dimension of the end of the rib (12) connected to the tool holder (4).

6. The metal powder-discharging blade according to claim 1, 2, or 5, characterized in that, A washer (14) is provided between the locking bolt (9) and the pressure plate (7).

7. The metal powdering blade according to claim 1, 2 or 5, wherein The drum shell (1) is directly opposite the tool holder (4) and a sealing gasket (15) is bonded to it, and the tool holder (4) and the sealing gasket (15) are pressed tightly together.

8. The metal powdering blade according to claim 1, 2 or 5, wherein Several reinforcing ribs (16) are provided at intervals on the outer side of the pressure plate (7).

9. A laser printer characterized by comprising: The metal powder-discharging blade includes any one of claims 1 to 8.

Images