A planar metal powder discharge blade

Abstract

This utility model relates to a planar metal powder dispensing knife. The fixed end of the powder dispensing blade is laser-spot welded to one side of the powder dispensing knife holder. Compared to traditional welding methods, laser spot welding features concentrated energy and a small heat-affected zone, significantly reducing welding deformation and ensuring high-precision installation of the powder dispensing blade, thereby improving the uniformity and operational stability of powder dispensing. Simultaneously, the powder dispensing blade and the powder dispensing knife holder form a linear arrangement of main laser welding points through laser spot welding, with secondary laser welding point groups located on the upper sides of both ends of the main laser welding point groups. This enhances the connection strength and stability between the powder dispensing blade and the powder dispensing knife holder, effectively preventing loosening or breakage due to localized stress concentration and extending the service life of the powder dispensing knife. Furthermore, this structure is simple in design, requiring no complex assembly processes, reducing production costs, improving production efficiency, and better meeting the high-performance and high-reliability requirements of industrial production for planar metal powder dispensing knives.

Description

Technical Field

[0001] This utility model relates to the field of printer accessories technology, and in particular to a flat metal powder dispensing blade. 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 existing planar metal toner ejector blade technology, the connection between the blade and the blade holder is mostly achieved through ordinary welding or mechanical fixing. Ordinary welding suffers from low welding precision and is prone to significant welding deformation, making it difficult to guarantee the flatness and positional accuracy of the blade, affecting the uniformity of toner ejection and operational stability. Mechanical fixing methods, such as bolt fixing, not only increase structural complexity, assembly difficulty, and cost, but are also prone to loosening over long-term use, reducing the blade's lifespan and operational reliability. With the increasing demands for toner ejector blade performance in industrial production, there is an urgent need for a planar metal toner ejector blade structure that offers a robust connection, high precision, and good stability. 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 planar metal powder discharge knife.

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

[0005] A planar metal powder dispensing knife includes a powder dispensing knife holder and a powder dispensing blade. The powder dispensing blade includes a working end and a fixed end. The fixed end is fixed to one side of the powder dispensing knife holder by laser spot welding. The powder dispensing blade and the powder dispensing knife holder are laser spot welded to form a main laser welding point group arranged in a line. A secondary laser welding point group is provided on the upper side of both ends of the main laser welding point group.

[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 holes are provided at both ends of the tool holder plate.

[0008] In some embodiments, the powder dispensing blade is disposed between the two mounting holes, and the distance between the edge of the sidewall of the powder dispensing blade and the center of the mounting hole is 3.7±0.1mm.

[0009] In some embodiments, there are symmetrical positioning notches at the corners of the tool holder plate and the support plate.

[0010] In some embodiments, the edge of the working end is provided with an inclined slope, and the inclined slope is formed into a smooth surface by polishing and grinding.

[0011] In some embodiments, the powder-discharging blade is made of stainless steel and has a thickness of 0.1 mm.

[0012] In some embodiments, the powder discharge blade holder is made of electro-galvanized steel sheet with a thickness of 1.2 mm.

[0013] In some embodiments, the left-right distance between each weld point in the main laser weld point group and the auxiliary laser weld point group is 4mm.

[0014] In some embodiments, the vertical distance between the main laser solder joint group and the auxiliary laser solder joint group is 1.5 mm.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By fixing the fixed end of the powder-discharging blade to one side of the powder-discharging blade holder using laser spot welding, laser spot welding has the characteristics of concentrated energy and small heat-affected zone compared with traditional welding methods. This significantly reduces welding deformation, ensures high-precision installation of the powder-discharging blade, and thus improves the uniformity and working stability of the powder-discharging blade. At the same time, the powder-discharging blade and the powder-discharging blade holder form a linear arrangement of main laser welding points through laser spot welding, and secondary laser welding point groups are set on the upper sides of both ends of the main laser welding point groups. This unique welding point layout design enhances the connection strength and stability between the powder-discharging blade and the powder-discharging blade holder, effectively avoiding connection loosening or breakage caused by local stress concentration, and extending the service life of the powder-discharging blade. In addition, the structure design is simple, requiring no complex assembly process, reducing production costs, improving production efficiency, and better meeting the industrial production requirements for high performance and high reliability of planar metal powder-discharging blades. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is one of the three-dimensional schematic diagrams of the powder dispensing blade of this utility model;

[0018] Figure 2 This is the second three-dimensional schematic diagram of the powder dispensing blade of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged diagram of point A. 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] like Figures 1-3 The planar metal powder-discharging knife shown includes a powder-discharging knife holder 1 and a powder-discharging blade 2. 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 knife holder 1 by laser spot welding. The powder-discharging blade 2 and the powder-discharging knife holder 1 form a main laser welding point group 3 arranged in a line by laser spot welding. A secondary laser welding point group 4 is provided on the upper side of both ends of the main laser welding point group 3. Preferably, two groups of secondary laser welding point groups 4 are arranged vertically at intervals.

[0022] Based on the above structure, the powder-discharging blade 2 and the powder-discharging blade holder 1 are fixed by laser spot welding. Taking advantage of the concentrated energy and small heat-affected zone of laser spot welding, welding deformation is reduced, the installation accuracy of the powder-discharging blade 2 is guaranteed, and the uniformity of powder discharging and working stability are improved. The linear arrangement of the main laser welding point group 3 and the auxiliary laser welding point group 4 on the upper sides of both ends optimizes the welding point layout, enhances the connection strength, avoids loosening or breakage caused by stress concentration, and extends the service life of the powder-discharging blade.

[0023] In actual production, the fixed end of the powder-discharging blade 2 is precisely placed at the corresponding position on one side of the powder-discharging blade holder 1. Using laser spot welding equipment, with appropriate laser power, pulse time and other parameters, the main laser welding point group 3 is formed in a linear arrangement. Then, the welding of the auxiliary laser welding point group 4 is completed on the upper side of both ends of the main laser welding point group 3.

[0024] In this invention, the left and right distance between each weld point in the main laser weld point group 3 and the auxiliary laser weld point group 4 is 4mm; thus, the weld points are evenly distributed, the welding stress is evenly distributed, excessive local stress is avoided, the connection strength and stability between the powder-discharging blade and the powder-discharging blade holder are enhanced, and the reliability of the powder-discharging blade is improved.

[0025] Furthermore, the vertical distance between the main laser welding point group 3 and the auxiliary laser welding point group 4 is 1.5mm; the spatial layout of the welding points is optimized, further enhancing the structural strength and stability of the connection part, so that the powder-discharging blade 2 and the powder-discharging blade holder 1 can work together under force, thereby improving the overall performance of the powder-discharging blade.

[0026] In this utility model, 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. The powder dispensing blade holder 1 simplifies the processing technology, reduces the assembly process of parts, and lowers the production cost by integrally forming the blade holder plate 21 and the support plate 22 by bending. The integrally formed structure improves the overall strength and rigidity of the blade holder, enhances the support stability of the powder dispensing blade, and ensures the reliability of the powder dispensing blade.

[0027] Furthermore, mounting holes 31 are provided at both ends of the blade holder plate 21 to facilitate the connection and fixation of the powder dispensing blade holder 1 with its toner cartridge component, thereby improving the versatility and convenience of the powder dispensing blade installation and facilitating the overall assembly and maintenance of the equipment.

[0028] Furthermore, the powder dispensing blade 2 is disposed between the two mounting holes 31, and the distance between the side wall edge of the powder dispensing blade 2 and the center of the mounting hole 32 is 3.7±0.1mm; the positional relationship between the powder dispensing blade 2 and the mounting hole 31 is clearly defined to ensure that the powder dispensing blade is accurately installed on the blade holder plate, so that the powder dispensing blade is subjected to uniform force, avoiding uneven powder dispensing or abnormal blade wear caused by installation position deviation, and improving the working performance and service life of the powder dispensing blade.

[0029] Furthermore, there are symmetrical positioning notches 51 at the corners of the blade holder plate 21 and the support plate 22; these notches play a positioning role during the installation of the powder discharge blade holder 1, improving installation efficiency and accuracy, ensuring the consistency of the installation position of the powder discharge blade holder, and facilitating the overall assembly and debugging of the equipment.

[0030] In this invention, the edge of the working end is provided with an inclined slope 61, and the inclined slope 61 is polished and ground to form a smooth surface. The inclined slope 61 at the edge of the working end is polished and ground to form a smooth surface, which reduces the frictional resistance between the material and the blade during the powder discharge process, reduces the risk of material accumulation and blockage, and allows the material to pass smoothly through the powder discharge blade, improving the powder discharge flow and efficiency. At the same time, the smooth surface is also easy to clean and maintain, preventing material residue from affecting the powder discharge quality.

[0031] In this utility model, the powder dispensing blade 2 is made of stainless steel and has a thickness of 0.1mm. The stainless steel material of the powder dispensing blade 2 has good corrosion resistance and wear resistance, adapts to the powder dispensing working environment of various materials, ensures that the powder dispensing blade has stable performance during long-term use, is not easily damaged, and extends the service life of the powder dispensing blade; the 0.1mm thickness ensures the strength and rigidity of the blade while reducing material costs and is conducive to improving powder dispensing accuracy.

[0032] In this utility model, the powder dispensing blade holder 1 is made of electro-galvanized steel plate with a thickness of 1.2mm. The electro-galvanized layer can effectively prevent the blade holder from rusting and corroding, and improve the weather resistance and service life of the blade holder. The 1.2mm thickness gives the blade holder sufficient strength and rigidity, which can stably support the powder dispensing blade and ensure the stability of the overall structure of the powder dispensing blade.

[0033] 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 planar metal powder dispensing knife, comprising a powder dispensing knife holder (1) and a powder dispensing 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 laser spot welding. The powder-discharging blade (2) and the powder-discharging blade holder (1) form a main laser welding point group (3) arranged in a line by laser spot welding. A secondary laser welding point group (4) is provided on the upper side of both ends of the main laser welding point group (3).

2. The planar metal powder-discharging blade 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. The planar metal powder-discharging blade according to claim 1, characterized in that: Mounting holes (31) are provided at both ends of the tool holder plate (21).

4. A planar metal powder-discharging blade according to claim 3, characterized in that: The powder-discharging blade (2) is located between the two mounting holes (31), and the distance between the edge of the sidewall of the powder-discharging blade (2) and the center of the mounting hole (32) is 3.7±0.1mm.

5. A planar metal powder-discharging blade according to claim 2, characterized in that: There are symmetrical positioning notches (51) at the corners of the tool holder plate (21) and the support plate (22).

6. A planar metal powder-discharging blade according to claim 1, characterized in that: The edge of the working end is provided with an inclined slope (61), and the inclined slope (61) is formed into a smooth surface by polishing and grinding.

7. A planar metal powder-discharging blade according to claim 1, characterized in that: The powder-discharging blade (2) is made of stainless steel and has a thickness of 0.1 mm.

8. A planar metal powder-discharging blade 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.

9. A planar metal powder-discharging blade according to claim 1, characterized in that: The left and right distance between each weld point in the main laser weld point group (3) and the auxiliary laser weld point group (4) is 4mm.

10. A planar metal powder-discharging blade according to claim 1, characterized in that: The vertical distance between the main laser welding point group (3) and the secondary laser welding point group (4) is 1.5 mm.

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