Heating roller with anti-sticking function

Abstract

The utility model discloses a heating roller with an anti-adhesion function, and relates to the technical field of anti-adhesion of heating rollers. The top of the inner side wall of the fixing frame is rotationally connected with a heating roller body. The honeycomb sheet is arranged on the surface of the heating roller body, the top of the honeycomb sheet is in the shape of the arc-shaped protrusion, the gradient of the edge of the honeycomb sheet is low, and therefore the actual contact area of powdered ink and the heating roller body is reduced, the surface of the honeycomb sheet is further covered with the graphene coating, and the heat conduction performance of the heating roller body is improved. Heat can be quickly transferred from the bottoms of the protrusions to the tops of the protrusions, contact area reduction is compensated, molten toner is guided to contract towards the paper side instead of being retained in structural gaps, toner particles are prevented from being embedded or stacked, toner tearing caused by structural acute angles is avoided, the honeycomb pieces are regularly distributed on the surface layer of the heating roller body, and it is ensured that heat is evenly diffused. A local low-temperature area is avoided, the printing quality is improved, and the anti-sticking performance of the heating roller body is improved under the action of the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-adhesion of heating rollers, in particular to a heating roller with an anti-adhesion function. Background Art

[0002] The printer heating roller is a component inside the printer. Its function is to heat and melt the toner in the printer cartridge, and then transfer it to the printing paper so that it is fixed on the paper to form text or graphics. This process requires both the high temperature capability and stability of the heating roller, which is a great test of the quality and performance of the heating roller.

[0003] The current fusing heating unit of laser printers generally uses a halogen lamp or a ceramic film to heat the fusing roller so that the temperature of the heating roller surface rises to melt the toner, and then the pressure of the pressure roller fixes the toner on the paper. The use of halogen lamps and ceramic films for heating has a slow heat transfer efficiency and a long waiting time for printing to be ready.

[0004] A Chinese patent document discloses a heating roller, a fixing device and a laser printer (Announcement No. CN209765274U), including a heating element in a cylindrical shape; a conductive shaft connected to both ends of the heating element, including a first conductive shaft arranged at the first end of the heating element, and a second conductive shaft arranged at the second end of the heating element, the conductive shaft is used to drive the heating element to rotate around the central axis of the heating element, the first conductive shaft and the second conductive shaft are both electrically connected to the heating element, so that the heating element generates heat; but there are still the following defects in the implementation process:

[0005] Although the device in the above document can energize the heating element by setting a conductive shaft at both ends of the heating element to make the heating element generate heat as a whole, compared with the prior art of using a halogen lamp to heat the heating roller, the heat transfer efficiency is higher, the heating roller can be quickly heated, and the heat conduction is more uniform. At the same time, compared with the heating roller in the prior art, the structure is simpler. However, the device in the above document still has the phenomenon of toner residue. For example, inferior or incompletely cured toner will remain on the surface of the heating roller, resulting in black blocks, black strips, and even back contamination on the printed paper. In addition, the residual toner will form stubborn dirt after carbonization, which reduces the heat transfer efficiency and causes phenomena such as ghosting and powdering on the printed paper, thereby reducing the quality of the printed product and shortening the service life of the equipment. Utility Model Content

[0006] The utility model aims to provide a heating roller with an anti-sticking function to solve the problem of toner residue leading to reduced quality of printed paper proposed in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A heating roller with an anti-sticking function comprises a fixed frame; a pressure roller is rotatably connected to the bottom of the inner side wall of the fixed frame, a heating roller body is rotatably connected to the top of the inner side wall of the fixed frame, a plurality of honeycomb sheets are fixedly connected to the outer wall of the heating roller body, the tops of the plurality of honeycomb sheets are arc-shaped protrusions, a cleaning component is arranged on the top of the inner side wall of the fixed frame, and the cleaning component is used to assist the honeycomb sheets in reducing the phenomenon of toner adhesion.

[0009] The above-mentioned technical scheme is adopted, in which a honeycomb sheet is provided on the surface of the heating roller body, the top of the honeycomb sheet is an arc-shaped protrusion, and its edge slope is low, thereby reducing the actual contact area between the toner and the heating roller body. Specifically, the surface of the honeycomb sheet is also covered with a graphene coating to increase the thermal conductivity of the heating roller body. Heat can be quickly transferred from the bottom of the protrusion to the top, compensating for the reduction in contact area, guiding the molten toner to shrink toward the paper side instead of being retained in the structural gap, preventing toner particles from being embedded or accumulated, and avoiding toner tearing due to sharp angles of the structure. At the same time, the honeycomb sheets are regularly distributed on the surface of the heating roller body to ensure uniform heat diffusion, avoid local low temperature areas, improve printing quality, and increase the anti-sticking performance of the heating roller body under the action of this structure.

[0010] A further improvement of the technical solution of the utility model is that the cleaning component includes a cleaning frame fixedly connected to the bottom of the fixed frame, the two cleaning frames are symmetrically arranged in an arc shape, buffer pads are inserted at the bottom of the cleaning frames, brushes are fixedly connected to the bottom of the buffer pads, and the bottom of the brush is in contact with the outer wall of the heating roller body.

[0011] The above technical solution is adopted, in which the brush is attached to the outer wall of the heating roller body, and the brush is arranged in a downward curved arc shape, and an integrated box is arranged at the connection of the two brushes, and the two are located at the outlet of the printing paper. During use, the heating roller body rotates and contacts with the brush to achieve cleaning of the toner.

[0012] A further improvement of the technical solution of the utility model is that weakened grooves are provided on the inner walls of the buffer pads, a plurality of limit blocks are fixedly connected to the top of the buffer pads, and both sides of the limit blocks are slidably connected to the inner walls of the cleaning frame.

[0013] The above technical solution is adopted, in which the buffer pad on the top of the brush is made of rubber material and has a weakening groove, which absorbs the potential energy generated by the contact between the heating roller body and the brush during cleaning, thereby further improving the cleaning effect of the brush.

[0014] A further improvement of the technical solution of the utility model is that an integrated box is fixedly connected at the connection position of the two cleaning frames, the bottom of the integrated box is slidably connected to a limit baffle, and the outer wall of the integrated box is in contact with the main body of the heating roller.

[0015] The above technical solution is adopted, in which the integrated box is used to collect the toner cleaned by the brush, and the staff needs to slide the limit baffle regularly to take out the toner collected in the integrated box.

[0016] A further improvement of the technical solution of the utility model is that the cleaning component also includes a high-pressure nozzle fixedly connected to the bottom of the fixed frame, and the multiple high-pressure nozzles are arranged at an angle. The high-pressure nozzles are all installed on the side away from the cleaning frame, and a monitor is fixedly connected to the side of the fixed frame close to the high-pressure nozzle.

[0017] The above technical solution is adopted, in which the monitor monitors the position of the paper, and when the paper is not in contact with the heating roller body, the high-pressure nozzle starts to work and blows the surface of the heating roller body.

[0018] A further improvement of the technical solution of the utility model is that a pretreatment box is fixedly connected to one side of the fixing frame away from the cleaning frame, a plurality of preheating rods are fixedly connected to the bottom of the pretreatment box, and a heat insulation net is fixedly connected to the top of the preheating rods.

[0019] By adopting the above technical solution, the preheating rod can preheat the paper placed between them to prevent the damp paper from affecting the printing effect, thereby improving the anti-adhesion effect of the heating roller body. The heat insulation net can block part of the heat to prevent the paper from drying out and curling due to excessive heat, affecting the effect of toner adhering to the paper.

[0020] A further improvement of the technical solution of the utility model is that an arc plate is symmetrically fixedly connected to the inner wall of the pretreatment box, both sides of the arc plate are arranged in an arc shape, and a feeding rod is rotatably connected to the middle position of the arc plate.

[0021] The above technical solution is adopted, in which the two ends of the arc-shaped plate arranged in the middle of the pre-processing box are designed to be flipped, so as to facilitate the placement of paper.

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

[0023] 1. The utility model provides a heating roller with an anti-sticking function, wherein a honeycomb sheet is arranged on the surface of a heating roller body, the top of the honeycomb sheet is an arc-shaped protrusion, and the edge slope is low, thereby reducing the actual contact area between the toner and the heating roller body. Specifically, the surface of the honeycomb sheet is also covered with a graphene coating, which increases the thermal conductivity of the heating roller body. Heat can be quickly transferred from the bottom of the protrusion to the top, compensating for the reduction in contact area, guiding the molten toner to shrink toward the paper side instead of being retained in the structural gap, preventing toner particles from being embedded or accumulated, and avoiding toner tearing due to sharp structural angles. At the same time, the honeycomb sheets are regularly distributed on the surface of the heating roller body, ensuring uniform heat diffusion, avoiding local low-temperature areas, and improving printing quality. Under the action of this structure, the anti-sticking performance of the heating roller body is increased.

[0024] 2. The utility model provides a heating roller with an anti-sticking function, which is fitted to the outer wall of the heating roller body by a brush, and the brush is arranged in a downward curved arc shape. An integrated box is arranged at the connection of the two brushes, and the two are located at the outlet of the printed paper. During use, the heating roller body rotates and contacts the brush, and the trace toner on its surface enters the integrated box along the curve of the brush for centralized collection. The monitor monitors the position of the paper. When the paper does not contact the heating roller body, the high-pressure nozzle starts to work and blows the surface of the heating roller body. It should be noted that the high-pressure nozzle is inclined and the blowing direction is the axial surface area that has been separated from the paper, so as to avoid vertical impact on the paper, resulting in paper position deviation and paper jam, and at the same time avoid the phenomenon of blowing away the toner that has not been pressed into the paper, resulting in blurred image or background stains. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

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

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the heating roller body and the pretreatment box in the utility model;

[0028] Figure 3 It is a schematic diagram of the matching structure of the heating roller body, the honeycomb sheet and the cleaning frame in the utility model;

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the heating roller body and the honeycomb sheet in the utility model;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the cleaning frame and the buffer pad in the utility model;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the buffer pad and the limit block in the utility model;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the integrated box and the limit baffle in the utility model;

[0033] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the pretreatment box in the utility model.

[0034] In the figure: 1. fixing frame; 2. pressure roller; 3. heating roller body; 4. honeycomb sheet; 5. pretreatment box; 6. monitor; 7. cleaning frame; 8. integrated box; 9. high-pressure nozzle; 10. buffer pad; 11. limit block; 12. weakening groove; 13. brush; 14. limit baffle; 15. arc plate; 16. feeding rod; 17. preheating rod; 18. insulation net. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the embodiments.

[0036] Example 1

[0037] like Figure 1 and Figure 4 As shown, the utility model provides a heating roller with an anti-sticking function, including a fixed frame 1; a pressure roller 2 is rotatably connected to the bottom of the inner wall of the fixed frame 1, a heating roller body 3 is rotatably connected to the top of the inner wall of the fixed frame 1, a plurality of honeycomb sheets 4 are fixedly connected to the outer wall of the heating roller body 3, the tops of the plurality of honeycomb sheets 4 are arc-shaped protrusions, a cleaning component is arranged on the top of the inner wall of the fixed frame 1, and the cleaning component is used to assist the honeycomb sheets 4 in reducing the phenomenon of toner adhesion.

[0038] In the present embodiment, a honeycomb sheet 4 is provided on the surface of the heating roller body 3, and the top of the honeycomb sheet 4 is an arc-shaped protrusion with a low edge slope, thereby reducing the actual contact area between the toner and the heating roller body 3. Specifically, the surface of the honeycomb sheet 4 is also covered with a graphene coating to increase the thermal conductivity of the heating roller body 3. Heat can be quickly transferred from the bottom of the protrusion to the top, compensating for the reduction in contact area, and guiding the molten toner to shrink toward the paper side instead of being retained in the structural gap, thereby preventing toner particles from being embedded or accumulated, and avoiding toner tearing due to sharp angles of the structure. At the same time, the honeycomb sheets 4 are regularly distributed on the surface of the heating roller body 3 to ensure uniform heat diffusion, avoid local low temperature areas, and improve printing quality. Under the action of this structure, the anti-sticking performance of the heating roller body 3 is increased.

[0039] Furthermore, the outer wall of the pressure roller 2 is made of silicone material, and its elastic deformation can adapt to the micro-protrusion structure to ensure uniform pressure distribution. The periodic arrangement of the honeycomb sheet 4 concentrates the pressure on the top of the protrusion, increasing the pressure per unit area, which helps to press the toner into the paper fibers, further improving the printing quality.

[0040] like Figure 3 , Figure 6 and Figure 7As shown, preferably, the cleaning component includes a cleaning frame 7 fixedly connected to the bottom of the fixed frame 1, the two cleaning frames 7 are symmetrically arranged in an arc shape, the bottom of the cleaning frames 7 are plugged with buffer pads 10, the bottom of the buffer pads 10 are fixedly connected with brushes 13, the bottom of the brush 13 is in contact with the outer wall of the heating roller body 3, the inner wall of the buffer pads 10 is provided with weakening grooves 12, the top of the buffer pads 10 is fixedly connected with a plurality of limit blocks 11, the two sides of the limit blocks 11 are slidably connected to the inner wall of the cleaning frame 7, an integrated box 8 is fixedly connected at the connecting position of the two cleaning frames 7, the bottom of the integrated box 8 is slidably connected with a limit baffle 14, and the outer wall of the integrated box 8 is in contact with the heating roller body 3.

[0041] Since the honeycomb sheet 4 on the outer wall of the heating roller body 3 reduces the adhesion of toner, some toner will still adhere to its surface due to electrostatic adsorption. At present, it is mostly cleaned manually or with a mechanical scraper. Manual cleaning is cumbersome, and the use of a mechanical scraper for cleaning not only increases the extra energy consumption, but also easily scratches the surface of the heating roller body 3, thereby causing the coating to wear and aggravating the adhesion of toner. Therefore, it is necessary to further improve the anti-sticking performance of the heating roller body 3.

[0042] In this embodiment, a brush 13 is arranged to fit the outer wall of the heating roller body 3, and the brush 13 is arranged in a downward curved arc shape. An integration box 8 is arranged at the connection of the two brushes 13, and the two are located at the outlet of the printing paper. During use, the heating roller body 3 rotates and contacts the brush 13, and the trace toner on its surface enters the integration box 8 along the curve of the brush 13 for centralized collection. The staff needs to slide the limit baffle 14 regularly to take out the toner collected in the integration box 8.

[0043] Specifically, the buffer pad 10 on the top of the brush 13 is made of rubber and is provided with a weakened groove 12, which absorbs the potential energy generated by the contact between the heating roller body 3 and the brush 13 during cleaning, thereby further improving the cleaning effect of the brush 13. The staff needs to replace the brush 13 regularly to prevent a lot of toner from adhering to its surface and contaminating the surface of the heating roller body 3. The staff can separate it from the cleaning frame 7 by squeezing the limit blocks 11 from both sides. The overall structure is simple and easy to operate.

[0044] like Figure 2 As shown, preferably, the cleaning component also includes a high-pressure nozzle 9 fixedly connected to the bottom of the fixed frame 1, and multiple high-pressure nozzles 9 are arranged at an angle. The high-pressure nozzles 9 are all installed on the side away from the cleaning frame 7, and a monitor 6 is fixedly connected to the side of the fixed frame 1 close to the high-pressure nozzle 9.

[0045] Using the brush 13 to clean the heating roller body 3 may cause the toner attached to the brush 13 to be adsorbed on the surface of the heating roller body 3 again, affecting the quality of subsequent printing, and causing the heating roller body 3 to be easily carbonized and reduce its service life.

[0046] In this embodiment, the paper position is monitored by the monitor 6. When the paper is not in contact with the heating roller body 3, the high-pressure nozzle 9 starts to work and blows the surface of the heating roller body 3. It should be noted that the high-pressure nozzle 9 is tilted and the blowing direction is the axial surface area that has been separated from the paper, so as to avoid vertical impact on the paper, resulting in paper position deviation and paper jam, and at the same time avoid the phenomenon of blowing away the toner that is not pressed into the paper, causing image blur or background stains.

[0047] Example 2

[0048] like Figure 1 , Figure 2 and Figure 8 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a pretreatment box 5 is fixedly connected to the side of the fixed frame 1 away from the cleaning frame 7, a plurality of preheating rods 17 are fixedly connected to the bottom of the pretreatment box 5, a heat insulation net 18 is fixedly connected to the top of the preheating rod 17, an arc plate 15 is symmetrically fixedly connected to the inner wall of the pretreatment box 5, both sides of the arc plate 15 are arranged in an arc shape, and a feeding rod 16 is rotatably connected to the middle position of the arc plate 15.

[0049] Because the paper may be relatively damp due to improper storage before printing, the paper may warp, which may also cause the toner to adhere loosely, thereby aggravating the toner adhesion to the heating roller body 3 .

[0050] In this embodiment, before the paper contacts the heating roller body 3, the paper is first placed in the pretreatment box 5. The two ends of the arc-shaped plate 15 arranged in the middle of the pretreatment box 5 are designed to be flipped, which is convenient for the paper to be placed. The preheating rod 17 arranged at the bottom can preheat the paper placed therebetween to prevent the damp paper from affecting the printing effect, thereby improving the anti-adhesion effect of the heating roller body 3. The heat insulation net 18 can block part of the heat to prevent the paper from drying and curling due to excessive heat, which affects the effect of toner adhering to the paper.

[0051] The working principle of the heating roller with anti-sticking function is described in detail below.

[0052] like Figure 1-Figure 8As shown, during the printing process, the paper first passes through the pre-treatment box 5. The two ends of the arc-shaped plate 15 arranged in the middle of the pre-treatment box 5 are designed to be flipped, which is convenient for the paper to be placed. The preheating rod 17 arranged at the bottom can preheat the paper placed therebetween to prevent the damp paper from affecting the printing effect. The heat insulation net 18 can block part of the heat. When the paper contacts the heating roller body 3, the heating roller body 3 and the pressure roller 2 cooperate with each other to achieve fixing. Specifically, a honeycomb sheet 4 is provided on the surface of the heating roller body 3. The top of the honeycomb sheet 4 is convex in an arc shape, and its edge slope is low, thereby reducing the actual contact area between the toner and the heating roller body 3. Specifically, the surface of the honeycomb sheet 4 is also covered with a graphene coating to increase the thermal conductivity of the heating roller body 3. Heat can be quickly transferred from the bottom of the protrusion to the top, compensating for the reduction in contact area, and guiding the molten toner to shrink toward the paper side instead of being retained in the structural gap, thereby preventing toner particles from being embedded or accumulated and avoiding toner tearing due to sharp angles of the structure. At the same time, the honeycomb sheets 4 are regularly distributed on the surface of the heating roller body 3 to ensure uniform heat diffusion and avoid local low temperature areas. The outer wall of the pressure roller 2 is made of silicone material, and its elastic deformation can adapt to the micro-protrusion structure to ensure uniform pressure distribution. The periodic arrangement of the honeycomb sheets 4 concentrates the pressure on the top of the protrusion, and the single The increased pressure on the bit area helps to press the toner into the paper fibers. At the same time, the brush 13 is attached to the outer wall of the heating roller body 3, and the brush 13 is set in a downward curved arc shape. An integrated box 8 is set at the connection between the two brushes 13. The two are located at the outlet of the printed paper. During use, the heating roller body 3 rotates and contacts the brush 13. The trace toner on its surface enters the integrated box 8 along the curve of the brush 13 for centralized collection. The buffer pad 10 on the top of the brush 13 is made of rubber and has a weakening groove 12. When cleaning, it absorbs the potential energy generated by the contact between the heating roller body 3 and the brush 13. The staff needs to replace the brush regularly. 13 In order to prevent the toner adhering to its surface from contaminating the surface of the heating roller body 3, the separation from the cleaning frame 7 can be achieved by squeezing the limit blocks 11 from both sides. The overall structure is simple and easy to operate. The paper position is monitored by the monitor 6. When the paper is not in contact with the heating roller body 3, the high-pressure nozzle 9 starts to work and blows the surface of the heating roller body 3. It should be noted that the high-pressure nozzle 9 is inclined and the blowing direction is the axial surface area that has been separated from the paper, so as to avoid the vertical impact on the paper, resulting in the deviation of the paper position and the occurrence of paper jams, and at the same time avoid the phenomenon of blowing away the toner that is not pressed into the paper, resulting in blurred images or background stains.

[0053] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A heating roller with an anti-sticking function, comprising a fixing frame (1); characterized in that: The bottom of the inner side wall of the fixed frame (1) is rotatably connected to a pressure roller (2), the top of the inner side wall of the fixed frame (1) is rotatably connected to a heating roller body (3), the outer wall of the heating roller body (3) is fixedly connected to a plurality of honeycomb sheets (4), the tops of the plurality of honeycomb sheets (4) are arc-shaped protrusions, and a cleaning component is arranged on the top of the inner side wall of the fixed frame (1), the cleaning component is used to assist the honeycomb sheets (4) in reducing the phenomenon of toner adhesion.

2. The heating roller with anti-sticking function according to claim 1, characterized in that: The cleaning assembly comprises a cleaning frame (7) fixedly connected to the bottom of the fixing frame (1), the two cleaning frames (7) being symmetrically arranged in an arc shape, the bottom of each cleaning frame (7) being plugged with a buffer pad (10), the bottom of each buffer pad (10) being fixedly connected with a brush (13), the bottom of each brush (13) being in contact with the outer wall of the heating roller body (3).

3. The heating roller with anti-sticking function according to claim 2, characterized in that: The inner wall of the buffer pad (10) is provided with a weakened groove (12), the top of the buffer pad (10) is fixedly connected to a plurality of limit blocks (11), and the two sides of the limit blocks (11) are slidably connected to the inner wall of the cleaning frame (7).

4. The heating roller with anti-sticking function according to claim 3, characterized in that: An integrated box (8) is fixedly connected at the connection position of the two cleaning frames (7); the bottom of the integrated box (8) is slidably connected to a limit baffle (14); and the outer wall of the integrated box (8) is in contact with the heating roller body (3).

5. The heating roller with anti-sticking function according to claim 4, characterized in that: The cleaning assembly further comprises a high-pressure nozzle (9) fixedly connected to the bottom of the fixing frame (1), wherein the plurality of high-pressure nozzles (9) are arranged in an inclined manner, and the high-pressure nozzles (9) are all installed on a side away from the cleaning frame (7), and a monitor (6) is fixedly connected to a side of the fixing frame (1) close to the high-pressure nozzles (9).

6. The heating roller with anti-sticking function according to claim 5, characterized in that: A pretreatment box (5) is fixedly connected to a side of the fixing frame (1) away from the cleaning frame (7), a plurality of preheating rods (17) are fixedly connected to the bottom of the pretreatment box (5), and a heat insulation net (18) is fixedly connected to the top of the preheating rods (17).

7. The heating roller with anti-sticking function according to claim 6, characterized in that: An arc-shaped plate (15) is symmetrically fixedly connected to the inner side wall of the pretreatment box (5), two sides of the arc-shaped plate (15) are arranged in an arc shape, and a feeding rod (16) is rotatably connected to the middle position of the arc-shaped plate (15).

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