Wear-resistant heating roller for high-speed laser printer

Abstract

The utility model discloses a wear-resistant heating roller for a high-speed laser printer, which relates to the technical field of heating rollers and comprises a roller body, a mandrel and a heating element assembly. The roller body is rotationally connected with the mandrel, the mandrel is symmetrically and fixedly connected with a buffer assembly, the heating element assembly comprises two connecting blocks, the two connecting blocks are jointly and fixedly connected with the mandrel, the opposite faces of the two connecting blocks are jointly and fixedly connected with a plurality of heating wires in an annular array mode, and the heating wires are wound around the outer surface of the mandrel. According to the heating roller, the buffering assemblies are symmetrically and fixedly connected to the core shaft, and then the buffering assemblies are used for absorbing and dispersing pressure and vibration generated when a printer works, so that abrasion to the whole heating roller can be reduced, and the multiple connecting blocks are fixedly connected to the opposite faces of the two connecting blocks jointly in the annular array mode; and then the connecting block is wound on the outer surface of the mandrel, so that heat can be uniformly distributed in the roller body to ensure that the heat is uniformly transferred, and the heating roller is uniformly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of heating rollers, and particularly relates to a wear-resistant heating roller for a high-speed laser printer. Background Technique

[0002] The development of high-speed laser printers can be traced back to the mechanical typewriters in the 19th century. However, the real leap occurred in the 1970s. With the rapid development of electronic technology, laser printers came into being. Laser printers quickly became the standard in offices with their fast, clear, and efficient printing capabilities. Entering the 21st century, high-speed laser printers have integrated advanced digital and intelligent technologies, not only being fast, but also having the characteristics of high resolution, low energy consumption, and easy maintenance.

[0003] In a laser printer, the heating roller mainly plays the role of heating and conducting heat. When the printing paper passes through the heating roller, the heating roller conducts heat to the paper, playing the role of fixing and fusing. That is to say, the heating roller of a laser printer is one of the key components to ensure the printing image quality. Its principle is the heat conduction principle. A special coating is applied on the surface of the heating roller, and this coating can quickly conduct heat to the paper, making the surface of the paper heated and softened, so that the toner is more easily attached to the paper. In this way, the laser printer can print clearer and more durable images and texts.

[0004] Although the existing heating rollers have made certain progress in design and manufacturing, there are still some problems in terms of wear resistance: A special coating is usually applied on the surface of the heating roller to improve the heat conduction efficiency and protect the roller surface. However, during long-term use, this coating will gradually wear, resulting in a decline in the heating effect and wear resistance of the heating roller; the materials inside the heating roller will also age under the action of high temperature and long-term stress, thus affecting its heating performance and wear resistance.

[0005] The decrease in wear resistance leads to the wear of the surface coating of the heating roller, which in turn affects its heating uniformity, resulting in phenomena such as blurred, uneven color, or different shades in the printed images and texts. A severely worn heating roller cannot conduct enough heat to the paper, resulting in poor fixing, and the printed texts or images are easily peeled off or blurred. At the same time, since the heating roller is one of the key components inside the printer, its replacement requires professional technology and tools, which will increase the maintenance difficulty and cost for users. Content of the Utility Model

[0006] The purpose of the utility model is to provide a wear-resistant heating roller for a high-speed laser printer to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the technical solution adopted by the present utility model is as follows:

[0008] A wear-resistant heating roller for a high-speed laser printer, comprising a roller body, a mandrel and a heating element assembly; the roller body is rotatably connected to the mandrel, a buffer assembly is symmetrically and fixedly connected to the mandrel, the heating element assembly includes two connecting blocks, the two connecting blocks are fixedly connected to the mandrel together, a plurality of heating wires are fixedly connected in a circumferential array on the opposite surfaces of the two connecting blocks, the heating wires are wound around the outer surface of the mandrel, a connecting wire is fixedly connected to the middle of one of the connecting blocks, a heat insulation layer assembly is fixedly connected to the opposite surfaces of the two connecting blocks, and filling blocks are filled between the outer surface of the heat insulation layer assembly and the inner cavity of the roller body.

[0009] Adopting the above technical solution, in this solution, a buffer assembly is symmetrically and fixedly connected to the mandrel, and then the buffer assembly is used to absorb and disperse the pressure and vibration generated during the operation of the printer, so as to reduce the wear of the entire heating roller. By fixedly connecting a plurality of connecting blocks in a circumferential array on the opposite surfaces of the two connecting blocks, and then winding the connecting blocks around the outer surface of the mandrel, the heat can be evenly distributed inside the roller body to ensure uniform heat transfer.

[0010] A further improvement of the technical solution of the present utility model lies in that: the roller body is made of alloy steel material, and the surface of the roller body is plated with hard chromium.

[0011] Adopting the above technical solution, in this solution, the alloy steel itself has high hardness and strength. After the surface of the roller body is treated by plating hard chromium, its hardness can be further improved, so that its surface is less likely to be worn, and then the service life of the roller body can be extended.

[0012] A further improvement of the technical solution of the present utility model lies in that: the surface of the roller body is coated with a ceramic coating.

[0013] Adopting the above technical solution, in this solution, the ceramic coating itself has extremely high hardness and can effectively resist the friction and wear of the material on the surface of the roller body. The heating roller generates high temperature during the working process, and the ceramic coating has excellent high-temperature resistance and can maintain stable physical and chemical properties in a high-temperature environment, and is not easy to deform or fall off. Therefore, by coating the surface of the roller body with a ceramic coating, the service life of the roller body can be extended.

[0014] A further improvement of the technical solution of the present utility model lies in that: the heating wires are wound around the outer surface of the mandrel in an S shape.

[0015] With the above technical solution, in this solution, the S-shaped winding method can ensure the uniform distribution of the heating wire on the outer surface of the mandrel, making the heat distribution more uniform, thereby improving the heating efficiency. The S-shaped winding method can increase the adhesion and stability of the heating wire on the mandrel, preventing the heating wire from loosening or falling off during use.

[0016] A further improvement of the technical solution of the present utility model lies in that: the heat insulation layer assembly includes an outer layer, a middle layer and an inner layer. The inner layer is made of ceramic fiber material, the middle layer is made of aluminum silicate fiber material, and the outer layer is made of stainless steel material.

[0017] With the above technical solution, in this solution, since the inner layer is adjacent to the heating element assembly and the inner layer is made of ceramic fiber material, the inner layer can quickly absorb and store the heat from the heating element assembly. The middle layer is located between the outer layer and the inner layer and is made of aluminum silicate fiber material, which can reduce the lateral heat dissipation and ensure that the heat can be transmitted along the radial direction of the heating roller. The outer layer is adjacent to the inner surface of the roller body and is made of stainless steel material, which can protect the heat insulation layer assembly from the erosion of the internal environment of the roller body and ensure that the heat can be evenly transmitted to the filling block.

[0018] A further improvement of the technical solution of the present utility model lies in that: the filling block is made of aluminum silicate fiber.

[0019] With the above technical solution, in this solution, the aluminum silicate fiber has good high-temperature resistance and low thermal conductivity, which can significantly reduce energy loss and improve heating efficiency.

[0020] A further improvement of the technical solution of the present utility model lies in that: the buffer assembly includes a housing, a first rubber block and a spring. A second rubber block is fixedly connected to the inner cavity of the housing. One side of the spring close to the second rubber block is fixedly connected to the second rubber block, and one side of the spring close to the first rubber block is fixedly connected to the first rubber block.

[0021] With the above technical solution, in this solution, by contacting the first rubber block with the support structure of the heating roller, the first rubber block can be used to absorb and disperse the pressure and vibration generated during the operation of the printer. When the heating roller is under pressure, the spring will undergo elastic deformation to absorb and disperse these pressures, which can play a role in shock absorption, reduce the vibration and noise generated during the operation of the printer, and thus extend the service life of the heating roller.

[0022] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0023] 1. The present utility model provides a wear-resistant heating roller for a high-speed laser printer. By axially and symmetrically fixedly connecting a buffer assembly to the core shaft, the buffer assembly is then used to absorb and disperse the pressure and vibration generated during the operation of the printer, thereby reducing the wear on the entire heating roller. By fixedly connecting a number of connecting blocks in a common circular array on the opposite surfaces of two connecting blocks, and then winding the connecting blocks around the outer surface of the core shaft, the heat can be evenly distributed inside the roller body, ensuring uniform heat transfer and even heating of the heating roller, thereby reducing or even avoiding the phenomenon of blurred, unevenly colored, or unevenly shaded printed images and texts. By reducing the wear on the entire heating roller, the number of times of replacing the heating roller can be reduced, and the usage cost of users can be reduced.

[0024] 2. The present utility model provides a wear-resistant heating roller for a high-speed laser printer. Alloy steel itself has relatively high hardness and strength. After the surface of the roller body is treated by hard chromium plating, its hardness can be further improved, making its surface less likely to be worn, and then the service life of the roller body can be extended, thereby not only reducing the frequency of replacing the heating roller, but also reducing the production cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 is a schematic cross-sectional view of the overall structure of the present utility model Figure 1 ;

[0028] Figure 3 is a schematic diagram of the heat insulation layer assembly of the present utility model;

[0029] Figure 4 is a schematic cross-sectional view of the overall structure of the present utility model Figure 2 ;

[0030] Figure 5 is a schematic diagram of the heating element assembly of the present utility model;

[0031] Figure 6 is a schematic diagram of the buffer assembly of the present utility model.

[0032] In the figure: 1, roller body; 2, core shaft; 3, buffer assembly; 31, outer shell; 32, first rubber block; 33, spring; 34, second rubber block; 4, heating element assembly; 41, connecting block; 42, connecting wire; 43, heating wire; 5, filling block; 6, heat insulation layer assembly; 61, outer layer; 62, middle layer; 63, inner layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present utility model in detail with reference to the embodiments:

[0034] Embodiment 1

[0035] As Figures 1-5 shown, the present utility model provides a wear-resistant heating roller for a high-speed laser printer, including a roller body 1, a mandrel 2, and a heating element assembly 4; the roller body 1 is rotatably connected to the mandrel 2, the mandrel 2 is symmetrically and fixedly connected with a buffer assembly 3, the heating element assembly 4 includes two connecting blocks 41, the two connecting blocks 41 are fixedly connected to the mandrel 2 together, a plurality of heating wires 43 are fixedly connected to the opposite surfaces of the two connecting blocks 41 in a common circumferential array, the heating wires 43 are wound around the outer surface of the mandrel 2, a connecting wire 42 is fixedly connected to the middle of one of the connecting blocks 41, a heat insulation layer assembly 6 is fixedly connected to the opposite surfaces of the two connecting blocks 41 together, and a filling block 5 is filled between the outer surface of the heat insulation layer assembly 6 and the inner cavity of the roller body 1.

[0036] In this embodiment, the entire heating roller can be supported and connected through the mandrel 2, the heating roller can be evenly heated through the heating element assembly 4, the buffer assembly 3 is symmetrically and fixedly connected to the mandrel 2, and then the buffer assembly 3 is used to absorb and disperse the pressure and vibration generated during the operation of the printer, thereby reducing the wear of the entire heating roller. By fixedly connecting a plurality of connecting blocks 41 in a common circumferential array to the opposite surfaces of the two connecting blocks 41, and then winding the connecting blocks 41 around the outer surface of the mandrel 2, the heat can be evenly distributed inside the roller body 1 to ensure uniform heat transfer.

[0037] Embodiment 2

[0038] As Figure 2 and Figure 6 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: preferably, the buffer assembly 3 includes a housing 31, a first rubber block 32, and a spring 33. A second rubber block 34 is fixedly connected to the inner cavity of the housing 31. One side of the spring 33 close to the second rubber block 34 is fixedly connected to the second rubber block 34, and one side of the spring 33 close to the first rubber block 32 is fixedly connected to the first rubber block 32.

[0039] In this embodiment, when installing the heating roller on the printer, the heating roller can be connected to the support structure of the printer through the mandrel 2. During the installation process, the first rubber block 32 will contact the support structure. Therefore, when the printer is running, the first rubber block 32 can be used to absorb and disperse the pressure and vibration generated during the operation of the printer. When the heating roller is under pressure, the spring 33 will undergo elastic deformation, thereby absorbing and dispersing these pressures, and then playing a role in shock absorption to reduce the vibration and noise generated during the operation of the printer.

[0040] Embodiment 3

[0041] As Figure 3 、 Figure 4 and Figure 5 shown, on the basis of Embodiment 2, the present utility model provides a technical solution: Preferably, the heating wire 43 is wound around the outer surface of the mandrel 2 in an S shape. The heat insulation layer assembly 6 includes an outer layer 61, a middle layer 62 and an inner layer 63. The inner layer 63 is made of ceramic fiber material, the middle layer 62 is made of aluminum silicate fiber material, the outer layer 61 is made of stainless steel material, and the filling block 5 is made of aluminum silicate fiber.

[0042] In this embodiment, it is connected to the external circuit through the connecting wire 42, so as to be able to control the operation of the connecting block 41 and several heating wires 43. Since the heating wire 43 is wound around the outer surface of the mandrel 2 in an S shape, it can ensure that the heating wire 43 is evenly distributed on the outer surface of the mandrel 2, making the heat distribution more uniform, thereby improving the heating efficiency. The S-shaped winding method can increase the adhesion and stability of the heating wire 43 on the mandrel 2, preventing the heating wire 43 from loosening or falling off during use. Then, the heat generated by several heating wires 43 will be transferred to the heat insulation layer assembly 6. Since the inner layer 63 is adjacent to the heating element assembly 4, the inner layer 63 can quickly absorb and store the heat from the heating element assembly 4. The middle layer 62 is located between the outer layer 61 and the inner layer 63, so as to reduce the lateral heat dissipation and ensure that the heat can be transferred along the radial direction of the heating roller. The outer layer 61 is adjacent to the inner surface of the roller body 1, and then the heat transferred to the outer layer 61 will be evenly transferred to the filling block 5, and then the filling block 5 is used to transfer the heat to the roller body 1, and then the roller body 1 is heated.

[0043] Embodiment 4

[0044] As Figure 1 and Figure 2 shown, on the basis of Embodiment 3, the present utility model provides a technical solution: Preferably, the roller body 1 is made of alloy steel material, the surface of the roller body 1 is plated with hard chromium, and the surface of the roller body 1 is coated with a ceramic coating.

[0045] In this embodiment, when the printer is running and the toner on the paper output by the laser printer is baked and melted by the heating roller so that the toner can be firmly fixed on the paper, since the roller body 1 is made of alloy steel material and the surface of the roller body 1 is plated with hard chromium, the alloy steel itself has relatively high hardness and strength. After the surface of the roller body 1 is treated by plating hard chromium, its hardness can be further improved, making its surface less likely to be worn, and then the service life of the roller body 1 can be extended. Moreover, the surface of the roller body 1 is coated with a ceramic coating. The ceramic coating itself has extremely high hardness and can effectively resist the friction and wear of materials on the surface of the roller body 1. The heating roller generates high temperature during operation, and the ceramic coating has excellent high-temperature resistance performance and can maintain stable physical and chemical properties in a high-temperature environment, not easily deformed or peeled off. Thus, by reducing the wear of the entire heating roller, the number of times of replacing the heating roller can be reduced, and the usage cost of the user can be reduced.

[0046] The working principle of the wear-resistant heating roller for high-speed laser printers is specifically described below.

[0047] As Figures 1-6 shown, when installing the heating roller on the printer, the heating roller can be connected to the support structure of the printer through the core shaft 2. During the installation process, the first rubber block 32 will contact the support structure. Thus, when the printer is running, the first rubber block 32 can be used to absorb and disperse the pressure and vibration generated during the operation of the printer. And when the heating roller is under pressure, the spring 33 will undergo elastic deformation to absorb and disperse these pressures, and then can play a role in shock absorption, reducing the vibration and noise generated during the operation of the printer;

[0048] It is connected to the external circuit through the connection wire 42, so that the connection block 41 and several heating wires 43 can be controlled to operate. Since the heating wires 43 are wound around the outer surface of the core shaft 2 in an S shape, it can ensure that the heating wires 43 are evenly distributed on the outer surface of the core shaft 2, making the heat distribution more uniform, thereby improving the heating efficiency. The S-shaped winding method can increase the adhesion and stability of the heating wires 43 on the core shaft 2, preventing the heating wires 43 from loosening or falling off during use. Then, the heat generated by several heating wires 43 will be transferred to the heat insulation layer assembly 6. Since the inner layer 63 is adjacent to the heating element assembly 4, the inner layer 63 can quickly absorb and store the heat from the heating element assembly 4. The middle layer 62 is located between the outer layer 61 and the inner layer 63, so as to reduce the lateral dissipation of heat and ensure that the heat can be transferred along the radial direction of the heating roller. The outer layer 61 is adjacent to the inner surface of the roller body 1, and then the heat transferred to the outer layer 61 will be evenly transferred to the filling block 5, and then the filling block 5 is used to transfer the heat to the roller body 1, and then the roller body 1 is heated;

[0049] When the printer is running and the toner on the paper output by the laser printer is baked and melted by the heating roller so that the toner can be firmly fixed on the paper, since the roller body 1 is made of alloy steel material and the surface of the roller body 1 is plated with hard chromium, the alloy steel itself has relatively high hardness and strength. After the surface of the roller body 1 is treated by hard chromium plating, its hardness can be further improved, making its surface less likely to be worn, and then the service life of the roller body 1 can be extended. Moreover, the surface of the roller body 1 is coated with a ceramic coating. The ceramic coating itself has extremely high hardness and can effectively resist the friction and wear of materials on the surface of the roller body 1. The heating roller generates high temperature during the working process, and the ceramic coating has excellent high-temperature resistance performance and can maintain stable physical and chemical properties in a high-temperature environment, not easily deformed or peeled off. Thus, by reducing the wear of the entire heating roller, the number of times of replacing the heating roller can be reduced, and the use cost of the user can be reduced.

[0050] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements that do not depart from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A wear-resistant heating roller for a high-speed laser printer, comprising a roller body (1), a core shaft (2) and a heating element assembly (4); characterized in that: The roller body (1) is rotatably connected to the core shaft (2); the core shaft (2) is symmetrically fixedly connected with a buffer assembly (3); the heating element assembly (4) comprises two connecting blocks (41); the two connecting blocks (41) are fixedly connected to the core shaft (2); the opposite surfaces of the two connecting blocks (41) are fixedly connected with a plurality of heating wires (43) in a circular array; the heating wires (43) are wound around the outer surface of the core shaft (2); a connecting wire (42) is fixedly connected to the middle of one of the connecting blocks (41); the opposite surfaces of the two connecting blocks (41) are fixedly connected with a heat insulation layer assembly (6); the outer surface of the heat insulation layer assembly (6) and the inner cavity of the roller body (1) are filled with a filling block (5).

2. The wear-resistant heating roller for a high-speed laser printer according to claim 1, characterized in that: The roller body (1) is made of alloy steel material, and the surface of the roller body (1) is plated with hard chrome.

3. The wear-resistant heating roller for a high-speed laser printer according to claim 2, characterized in that: The surface of the roller body (1) is coated with a ceramic coating.

4. The wear-resistant heating roller for a high-speed laser printer according to claim 1, characterized in that: The heating wire (43) is wound around the outer surface of the core shaft (2) in an S shape.

5. The wear-resistant heating roller for a high-speed laser printer according to claim 1, characterized in that: The thermal insulation layer assembly (6) comprises an outer layer (61), a middle layer (62) and an inner layer (63), wherein the inner layer (63) is made of a ceramic fiber material, the middle layer (62) is made of an aluminum silicate fiber material, and the outer layer (61) is made of a stainless steel material.

6. The wear-resistant heating roller for a high-speed laser printer according to claim 1, characterized in that: The filling block (5) is made of aluminum silicate fiber.

7. The wear-resistant heating roller for a high-speed laser printer according to claim 1, characterized in that: The buffer assembly (3) comprises an outer shell (31), a rubber block 1 (32) and a spring (33); the inner cavity of the outer shell (31) is fixedly connected to a rubber block 2 (34); a side of the spring (33) close to the rubber block 2 (34) is fixedly connected to the rubber block 2 (34); and a side of the spring (33) close to the rubber block 1 (32) is fixedly connected to the rubber block 1 (32).

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