Novel fixing roller structure

Abstract

The utility model discloses a novel fixing roller structure, which comprises a mounting rack and is characterized in that bearing mounting seats are respectively arranged at two ends of the mounting rack, bearings are arranged in the bearing mounting seats, a hollow fixing roller is arranged in the two bearings, lamp tube mounting seats are arranged on the outer sides of the bearing mounting seats, and lamp tube mounting seats are arranged on the lamp tube mounting seats. A fixing lamp is arranged in the hollow fixing roller, and the end part of the fixing lamp is mounted on the lamp tube mounting seat. In order to overcome the defects in the prior art, the utility model provides the novel fixing roller structure which is simple in structure, convenient to install, smooth in rotation, relatively large in heating function and firm in fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a novel fixing roller structure. Background Art

[0002] The fixing assembly is an important part of a laser printer, which generally includes a bracket, a heating tube and a pressure roller. Its function is to heat and pressurize the toner that has been transferred to the printing paper so that it is completely and firmly attached to the printing paper.

[0003] In order to obtain a good fixing rate of a laser printer, the fixing roller and the pressure roller need to be in close contact and sufficient pressure needs to be maintained between the two. Due to design deficiencies in the prior art, the fixing roller often does not rotate smoothly, thus affecting the fixing effect. In addition, the power of the existing fixing roller heating mechanism is relatively small, and the fixing is relatively not strong enough.

[0004] Therefore, the existing fixing roller structure needs to be further improved. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art and provide a new fixing roller structure with simple structure, convenient installation, smooth rotation, relatively large heating function and firm fixing.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: a new type of fixing roller structure, including a mounting frame, characterized in that: bearing mounting seats are respectively provided at both ends of the mounting frame, bearings are provided in the bearing mounting seats, hollow fixing rollers are provided in the two bearings, a lamp tube mounting seat is provided on the outer side of the bearing mounting seat, a fixing lamp is provided in the hollow fixing roller, and the end of the fixing lamp is installed on the lamp tube mounting seat.

[0007] As another improvement of the fixing roller structure of the utility model, it is characterized in that a scraper is installed on one side of the mounting frame along the length direction.

[0008] As another improvement of the fixing roller structure of the utility model, the hollow fixing roller includes an aluminum hollow tube, a mounting portion is provided on the end of the aluminum hollow tube, the outer diameter of the connecting portion is smaller than the outer diameter of the aluminum hollow tube, and the mounting portion is arranged in the bearing.

[0009] As another improvement of the fixing roller structure of the utility model, the mounting frame includes a base plate, side plates are respectively arranged on both sides of the base plate along the length direction, end plates are respectively arranged at both ends of the base plate, a gap is arranged between the inner side surface of the end plate and the end surface of the side plate, and a plurality of mounting holes are arranged on the base plate.

[0010] As another improvement of the fixing roller structure of the utility model, the bearing mounting seat includes a seat body, the seat body is clamped in the gap, a circular groove hole is provided on the seat body, a notch connected to the circular groove hole is provided at the upper end of the seat body, a first connecting part is provided at the lower end of the seat body, the first connecting part is arranged in the bottom plate, a second connecting part is provided on one side of the seat body, and the second connecting part is connected to the outer wall of the side plate.

[0011] As another improvement of the fixing roller structure of the utility model, the lamp tube mounting seat includes a first connecting plate connected to the bearing mounting seat, a second connecting plate extends vertically outward from the upper end of the first connecting plate, a third connecting plate is vertically upwardly arranged on the outer end of the second connecting plate, and a lamp tube positioning groove is provided in the middle position of the upper end of the third connecting plate.

[0012] As another improvement of the fixing roller structure of the utility model, the scraper installed includes a knife body, a clamping groove and a mounting hole groove are respectively provided at both ends of the knife body, and a blade portion is provided at the upper end of the knife body, and the blade portion is arranged to point to one side of the hollow fixing roller.

[0013] As another improvement of the fixing roller structure of the utility model, the fixing lamp includes two fixing lamp tubes arranged side by side.

[0014] As another improvement of the fixing roller structure of the utility model, a positioning convex ring is provided on the bearing, and the positioning convex ring abuts against the outer wall of the circular groove hole.

[0015] In summary, the utility model has the following beneficial effects compared with the prior art: the two ends of the hollow fixing roller in the utility model are respectively mounted on the bearing mounting seat through bearings, which greatly improves the smooth rotation performance of the hollow fixing roller and ensures that the paper can move smoothly between the pressure roller and the hollow fixing roller. In addition, the probability of carbon powder adhering to the outer wall of the hollow fixing roller is greatly reduced, and the anti-sticking effect is relatively good. A heating mechanism composed of two fixing lamp tubes is arranged in the hollow fixing roller, which greatly improves the heating efficiency, thereby improving the fixing effect and making the fixing more firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the bearing mounting seat of the utility model.

[0019] Figure 4 It is a schematic diagram of the scraper of the utility model.

[0020] Figure 5It is a schematic diagram of the mounting frame of the utility model.

[0021] In the figure: 1. mounting frame; 11. bottom plate; 12. side plate; 13. end plate; 14. gap; 15. mounting hole 2. bearing mounting seat; 21. seat body; 22. round slot hole; 23. missing slot; 3. bearing; 4. hollow fixing roller; 41. aluminum hollow tube; 42. mounting part; 5. lamp tube mounting seat; 51. first connecting plate; 52. second connecting plate; 53. third connecting plate; 54. lamp tube positioning groove; 6. fixing lamp; 7. scraper; 71. knife body; 72. snap-in groove; 73. mounting hole groove; 74. blade; 8. positioning convex ring. DETAILED DESCRIPTION

[0022] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] See also Figure 1-5The utility model discloses a novel fixing roller structure, including a mounting frame 1, bearing mounting seats 2 are respectively provided at both ends of the mounting frame 1, bearings 3 are provided in the bearing mounting seats 2, hollow fixing rollers 4 are provided in the two bearings 3, lamp tube mounting seats 5 are provided outside the bearing mounting seats 2, fixing lamps 6 are provided in the hollow fixing rollers 4, and the ends of the fixing lamps 6 are installed on the lamp tube mounting seats 5. In the utility model, the hollow fixing roller 4 is installed on the bearing mounting seats 2 through the bearings 3, and then assembled with the mounting frame 1, which is convenient for installation. The smooth rotation performance of the hollow fixing roller 4 is greatly improved, ensuring that the paper can move smoothly between the pressure roller and the hollow fixing roller. In addition, the probability of carbon powder adhering to the outer wall of the hollow fixing roller 4 is greatly reduced, and the anti-sticking effect is relatively good. The utility model needs to be used together with the pressure roller during use.

[0027] The hollow fixing roller 4 of the utility model includes an aluminum hollow tube 41, and a high temperature resistant coating is provided in the aluminum hollow tube 41. A mounting portion 42 is provided at the end of the aluminum hollow tube 41, and the outer diameter of the connecting portion 42 is smaller than the outer diameter of the aluminum hollow tube 41, and the mounting portion 42 is arranged in the bearing 3. In the utility model, a conical transition surface is provided between the end of the aluminum hollow tube 41 and the mounting portion 42. The mounting portion 42 of the utility model is a round tube body, and the bearing 3 is sleeved on the outer wall of the round tube body.

[0028] The mounting frame 1 of the utility model includes a bottom plate 11, side plates 12 are respectively arranged on both sides of the bottom plate 11 along the length direction, end plates 13 are respectively arranged at both ends of the bottom plate 11, a gap 14 is arranged between the inner side surface of the end plate 13 and the end surface of the side plate 12, and a plurality of mounting holes 15 are arranged on the bottom plate 11.

[0029] The bearing mounting seat 2 includes a seat body 21, which is clamped in the gap 14, and a circular slot hole 22 is provided on the seat body 21. A notch 23 connected to the circular slot hole 22 is provided at the upper end of the seat body 21, and a first connecting portion 24 is provided at the lower end of the seat body 21. The first connecting portion 24 is arranged in the bottom plate 11, and the first connecting portion 24 is fixedly connected to the bottom plate 11 by screws; a second connecting portion 25 is provided on one side of the seat body 21, and the second connecting portion 25 is connected to the outer wall of the side plate 12. The second connecting portion 25 is connected to the side plate 12 by screws. A hooking portion is provided on one side of the second connecting portion 25, and the hooking portion is connected to other components of the toner cartridge.

[0030] The lamp tube mounting seat 5 of the utility model includes a first connecting plate 51 connected to the bearing mounting seat 2. The first connecting plate 51 can be connected to the bearing mounting seat 2 by screws or by welding. A second connecting plate 52 extends vertically outward from the upper end of the first connecting plate 51, and a third connecting plate 53 is vertically upwardly arranged on the outer end of the second connecting plate 52. A lamp tube positioning groove 54 is arranged in the middle of the upper end of the third connecting plate 53. The end of the fixing lamp 6 is clamped in the lamp tube positioning groove 54, so that the fixing lamp 6 can be accurately positioned at the inner cavity axis position of the hollow fixing roller 4, so that the hollow fixing roller 4 is heated more evenly during the rotation process.

[0031] The utility model is provided with a scraper 7 on one side of the mounting frame 1 along the length direction. The scraper 7 includes a blade body 71, and a clamping groove 72 and a mounting hole groove 73 are respectively provided at both ends of the blade body 71, and a blade portion 74 is provided at the upper end of the blade body 71, and the blade portion 74 is arranged to point to one side of the hollow fixing roller 4. When the utility model is installed, the clamping groove 72 is clamped on the second connecting portion 25, and is fixedly connected to the side plate 12 by screws in the mounting hole groove 73.

[0032] The fixing lamp 6 of the utility model comprises two fixing lamp tubes arranged side by side, which greatly improves the heating efficiency, thereby enhancing the fixing effect and making the fixing more firm.

[0033] In the utility model, a positioning convex ring 8 is provided on the bearing 3, and the positioning convex ring 8 abuts against the outer wall of the circular groove hole 22. The positioning convex ring 8 enables the hollow fixing roller 4 to be effectively confined between the two bearing mounting seats 2.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel fixing roller structure, comprising a mounting frame (1), Features: Bearing mounting seats (2) are respectively provided at both ends of the mounting frame (1), bearings (3) are provided in the bearing mounting seats (2), hollow fixing rollers (4) are provided in the two bearings (3), a lamp tube mounting seat (5) is provided outside the bearing mounting seat (2), a fixing lamp (6) is provided in the hollow fixing roller (4), and the end of the fixing lamp (6) is mounted on the lamp tube mounting seat (5).

2. A novel fixing roller structure according to claim 1, Features: A scraper (7) is mounted on one side of the mounting frame (1) along the length direction.

3. A novel fixing roller structure according to claim 1, Features: The hollow fixing roller (4) comprises an aluminum hollow tube (41), and a mounting portion (42) is provided at the end of the aluminum hollow tube (41). The outer diameter of the mounting portion (42) is smaller than the outer diameter of the aluminum hollow tube (41), and the mounting portion (42) is arranged in the bearing (3).

4. A novel fixing roller structure according to claim 1, Features: The mounting frame (1) comprises a bottom plate (11), side plates (12) are respectively arranged on both sides of the bottom plate (11) along the length direction, end plates (13) are respectively arranged at both ends of the bottom plate (11), a gap (14) is arranged between the inner side surface of the end plate (13) and the end surface of the side plate (12), and a plurality of mounting holes (15) are arranged on the bottom plate (11).

5. A novel fixing roller structure according to claim 4, Features: The bearing mounting seat (2) comprises a seat body (21), the seat body (21) being clamped in the gap (14), a circular slot hole (22) being provided on the seat body (21), a notch (23) being connected to the circular slot hole (22) being provided at the upper end of the seat body (21), a first connecting portion (24) being provided at the lower end of the seat body (21), the first connecting portion (24) being arranged in the bottom plate (11), a second connecting portion (25) being provided on one side of the seat body (21), the second connecting portion (25) being connected to the outer wall of the side plate (12).

6. A novel fixing roller structure according to claim 5, Features: The lamp tube mounting seat (5) comprises a first connecting plate (51) connected to the bearing mounting seat (2); a second connecting plate (52) vertically extending outwards from the upper end of the first connecting plate (51); a third connecting plate (53) vertically arranged upwards on the outer end of the second connecting plate (52); and a lamp tube positioning groove (54) is provided at the middle of the upper end of the third connecting plate (53).

7. A novel fixing roller structure according to claim 2, Features: The scraper (7) comprises a blade body (71), a clamping groove (72) and a mounting hole groove (73) are respectively provided at two ends of the blade body (71), and a blade portion (74) is provided at the upper end of the blade body (71), and the blade portion (74) is arranged to point to one side of the hollow fixing roller (4).

8. A novel fixing roller structure according to claim 1, Features: The fixing lamp (6) comprises two fixing lamp tubes arranged side by side.

9. A novel fixing roller structure according to claim 5, Features: A positioning convex ring (8) is provided on the bearing (3), and the positioning convex ring (8) abuts against the outer wall of the circular groove hole (22).

Images