Metal doctor blade for printer

Abstract

The utility model relates to a metal doctor blade for a printer, which comprises a doctor blade holder and a doctor blade, the doctor blade comprises a working end and a fixed end, the fixed end is fixed on one side of the doctor blade holder through a welding process, and a welding seam of the fixed end and the doctor blade holder comprises a main welding seam and a reinforcing welding seam; the main welding seam extends in the length direction to provide basic connecting force, and the reinforcing welding seams at the two ends are arranged in an inclined mode to form a triangular supporting structure, so that the overall strength of the joint of the blade and the tool rest is effectively enhanced, and the cracking risk is reduced. Due to the inclined arrangement of the reinforcing welding seams, concentrated stress at the two ends can be dispersed to the two sides, fatigue damage caused by long-term load is avoided, and the service life of the doctor blade is prolonged; and due to the multi-welding-seam design, the blade can be more uniformly fixed on the knife rest, the vibration deviation during working is reduced, the ink powder scraping and conveying precision is ensured, and the stability of the printing quality is further improved.

Description

A metal toner ejector blade for a printer Technical Field

[0001] This utility model relates to the field of printer accessories technology, and in particular to a metal toner ejector blade for printers. Background Technology

[0002] In the toner cartridge assembly of a laser printer, the primary function of the toner ejector blade is to control the thickness of the toner layer on the magnetic roller surface, ensuring print quality. In traditional printers, the connection between the toner ejector blade and the blade holder often uses a single main weld or a simple fixing structure. However, this single weld method lacks sufficient connection strength and lacks targeted reinforcement in stress-concentrated areas such as the blade ends, making it prone to fatigue failure and shortening the toner ejector blade's lifespan. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a metal toner ejector blade for printers.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A metal toner dispensing blade for a printer includes a toner dispensing blade holder and a toner dispensing blade. The toner dispensing blade includes a working end and a fixed end. The fixed end is fixed to one side of the toner dispensing blade holder by a welding process. The weld between the fixed end and the toner dispensing blade holder includes a main weld and a reinforcing weld. The main weld extends along the length direction of the toner dispensing blade holder and the toner dispensing blade. The reinforcing welds are inclined at both ends of the main weld.

[0006] In some embodiments, the powder dispensing blade holder includes a blade holder plate and a support plate integrally formed by bending, and the powder dispensing blade is disposed on the blade holder plate.

[0007] In some embodiments, mounting tabs extend outward from both ends of the tool holder plate, and mounting holes are provided on the mounting tabs.

[0008] In some embodiments, raised ribs are provided on the lower end face of the support plate.

[0009] In some embodiments, the working end edge of the powder dispensing blade is provided with a bending piece, and the bending angle between the bending piece and the powder dispensing blade is 86-90°.

[0010] In some embodiments, the powder-discharging blade is made of stainless steel and has a thickness of 0.08 mm.

[0011] In some embodiments, the powder discharge blade holder is made of electro-galvanized steel sheet with a thickness of 1.2 mm.

[0012] In some embodiments, the distance between the center of the mounting hole and the edge of the powder discharge blade sidewall is 2.8 ± 0.1 mm.

[0013] In some embodiments, the distance between the center of the mounting hole and the edge of the upper wall of the powder discharge blade is 11.9 ± 0.1 mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the main weld extends along the length direction, providing basic connection force, while the reinforcing welds at both ends are set in an inclined manner to form a triangular support structure, which effectively enhances the overall strength of the connection between the blade and the blade holder and reduces the risk of cracking; moreover, the inclined layout of the reinforcing welds can disperse the concentrated stress at both ends to both sides, avoid fatigue damage caused by long-term load, and extend the service life of the toner blade; the multi-weld design makes the blade more evenly fixed on the blade holder, reduces vibration offset during operation, ensures the accuracy of toner scraping and delivery, and thus improves the stability of printing quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a three-dimensional schematic diagram of the powder dispensing blade of this utility model;

[0017] Figure 2 is a front view schematic diagram of the powder dispensing blade of this utility model;

[0018] Figure 3 is an enlarged schematic diagram of point A in Figure 2 of this utility model;

[0019] Figure 4 is a side view of the powder dispensing blade of this utility model. Detailed Implementation

[0020] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0021] As shown in Figures 1-4, a metal toner dispensing blade for a printer includes a toner dispensing blade holder 1 and a toner dispensing blade 2. The toner dispensing blade 2 includes a working end and a fixed end. The fixed end is fixed to one side of the toner dispensing blade holder 1 by welding. The weld between the fixed end and the toner dispensing blade holder 1 includes a main weld 3 and a reinforcing weld 4. The main weld 3 extends along the length of the toner dispensing blade holder 1 and the toner dispensing blade 2. The reinforcing weld 4 is inclined at both ends of the main weld 3.

[0022] Based on the above structure, the main weld 3 extends along the length direction to provide basic connection force, while the reinforcing welds 4 at both ends are set in an inclined manner to form a triangular support structure, which effectively enhances the overall strength of the connection between the blade and the blade holder and reduces the risk of cracking. Moreover, the inclined layout of the reinforcing welds 4 can disperse the concentrated stress at both ends to both sides, avoid fatigue damage caused by long-term load, and extend the service life of the toner blade. The multi-weld design makes the blade more evenly fixed on the blade holder, reduces vibration offset during operation, ensures the accuracy of toner scraping and delivery, and thus improves the stability of printing quality.

[0023] Furthermore, the powder dispensing blade holder 1 includes a blade holder plate 21 and a support plate 22 integrally formed by bending, and the powder dispensing blade 2 is disposed on the blade holder plate 21; a plate of appropriate size and material is selected, and the plate is integrally formed into a powder dispensing blade holder including the blade holder plate 21 and the support plate 22 by a mold bending process, and then the powder dispensing blade 2 is installed on the blade holder plate 21.

[0024] In this utility model, the two ends of the blade holder plate 21 extend outward with mounting tabs 31, and mounting holes 32 are provided on the mounting tabs 31; on both ends of the blade holder plate 21 of the integrally formed powder dispensing blade holder 1, mounting tabs 31 extending outward are punched out, and mounting holes 32 are opened on the mounting tabs 31. During installation, the powder dispensing blade holder is fixed to the corresponding position of the printer through the mounting holes 32 using bolts or other connecting parts.

[0025] Furthermore, a raised rib 41 is provided on the lower end face of the support plate 22; the raised rib 41 is processed by stamping and other processes on the lower end face of the support plate 22 of the integrally formed powder cutter holder 1 to enhance the structural strength of the support plate.

[0026] Referring to Figure 4, the working edge of the powder dispensing blade 2 is provided with a bending piece 51, and the bending angle between the bending piece 51 and the powder dispensing blade 2 is 86-90°. During the manufacturing process of the powder dispensing blade 2, a bending device is used to bend the working edge of the powder dispensing blade 2 into a bending piece 51 with an angle of 86-90°, thereby controlling the bending angle accuracy and ensuring its working performance.

[0027] In this utility model, the powder dispensing blade 2 is made of stainless steel and has a thickness of 0.08mm. The powder dispensing blade 2 is made of stainless steel, which has good wear resistance and corrosion resistance and can adapt to the toner environment. The thickness of 0.08mm ensures that the blade has a certain toughness and rigidity, so as to ensure the powder scraping effect while not being easily deformed or damaged.

[0028] Furthermore, the powder dispensing blade holder 1 is made of electro-galvanized steel sheet with a thickness of 1.2mm. The powder dispensing blade holder 1 is made of electro-galvanized steel sheet. The electro-galvanizing process forms an anti-corrosion layer on the surface of the blade holder, improving the corrosion resistance of the blade holder. The 1.2mm thickness ensures that the blade holder has sufficient strength and rigidity to support the stable operation of the powder dispensing blade.

[0029] In this utility model, the distance between the center of the mounting hole 32 and the edge of the side wall of the powder dispensing blade 2 is 2.8±0.1mm, and the distance between the center of the mounting hole 32 and the edge of the upper wall of the powder dispensing blade 2 is 11.9±0.1mm.

[0030] This clarifies that the distance between the center of the mounting hole 32 and the edge of the side wall of the powder dispensing blade 2 is 2.8±0.1mm, and the distance between the center of the mounting hole 32 and the edge of the upper wall of the powder dispensing blade 2 is 11.9±0.1mm. This ensures the positional accuracy of the mounting hole 32, and makes the relative position of the powder dispensing blade holder 1 and the powder dispensing blade 2 accurate after installation, thus ensuring the working stability of the powder dispensing blade and the accuracy of toner delivery.

[0031] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A metal toner dispenser for a printer, comprising a toner dispenser holder (1) and a toner dispenser blade (2), characterized in that: The powder-discharging blade (2) includes a working end and a fixed end. The fixed end is fixed to one side of the powder-discharging blade holder (1) by welding. The weld between the fixed end and the powder-discharging blade holder (1) includes a main weld (3) and a reinforcing weld (4). The main weld (3) extends along the length of the powder-discharging blade holder (1) and the powder-discharging blade (2). The reinforcing weld (4) is inclined at both ends of the main weld (3).

2. The metal toner ejector blade for a printer according to claim 1, characterized in that: The powder dispensing blade holder (1) includes a blade holder plate (21) and a support plate (22) integrally formed by bending, and the powder dispensing blade (2) is disposed on the blade holder plate (21).

3. A metal toner ejector blade for a printer according to claim 2, characterized in that: The blade holder plate (21) has mounting tabs (31) extending outward from both ends, and mounting holes (32) are provided on the mounting tabs (31).

4. A metal toner ejector blade for a printer according to claim 2, characterized in that: A raised rib (41) is provided on the lower end face of the support plate (22).

5. A metal toner ejector blade for a printer according to claim 1, characterized in that: The working end edge of the powder-discharging blade (2) is provided with a bending piece (51), and the bending angle between the bending piece (51) and the powder-discharging blade (2) is 86-90°.

6. A metal toner ejector blade for a printer according to claim 1, characterized in that: The powder-discharging blade (2) is made of stainless steel and has a thickness of 0.08 mm.

7. A metal toner ejector blade for a printer according to claim 1, characterized in that: The powder discharge blade holder (1) is made of electro-galvanized steel plate with a thickness of 1.2mm.

8. A metal toner ejector blade for a printer according to claim 3, characterized in that: The distance between the center of the mounting hole (32) and the edge of the side wall of the powder-discharging blade (2) is 2.8 ± 0.1 mm.

9. A metal toner ejector blade for a printer according to claim 3, characterized in that: The distance between the center of the mounting hole (32) and the edge of the upper wall of the powder-discharging blade (2) is 11.9±0.1mm.

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