Durable fixing assembly

Abstract

The utility model relates to a fixing assembly, in particular to an alternative durable fixing assembly, which comprises a base, a shell, a grooved rod, a mounting rod, a support and the like. Mounting rods are fixedly connected to the left side and the right side of the upper portion of the base, a fixing plate is fixedly connected to the front side of the lower portion of the support, a driving roller is rotatably arranged on the side, close to the lower portion of the shell, of the rear portion of the base, and the support is slidably mounted between the mounting rods. The roller type fixing roller is arranged to replace a conventional fixing film, the component structure of the fixing assembly is optimized, the fixing assembly is simple in structure, long in service life and convenient to maintain in use, the replacement frequency of the fixing roller and matched components can be greatly reduced, and the use cost of copying and printing equipment is reduced.

Description

Technical Field

[0001] The utility model relates to a fixing component, in particular to a durable fixing component. Background Art

[0002] The fixing assembly is an important part of a copy printer. Its function is to heat and melt the resin-containing toner transferred to the paper, make it penetrate into the fiber layer on the surface of the paper, and fix it by applying pressure. After cooling, the toner can adhere firmly to the paper fibers and will not fall off.

[0003] There are two types of fixing components, one is the fixing film method and the other is the fixing roller method. There are also soft films and steel films in the fixing film method. Soft films are generally used on low-speed machines, such as HP M1005, M126, etc. This type of film is very cheap, ranging from a few yuan to more than ten yuan. If it breaks, it can be replaced directly, and sometimes it can print 20,000 to 30,000 sheets. Steel films are generally used on high-speed machines, such as Brother MFC-8510 (early design without high-temperature oil cloth), Kyocera M2540 (improved design with high-temperature oil cloth), etc. These machines are fast and have a large daily print volume. When using them, only the original fixing components can do the job, but the original steel films are generally difficult to buy directly, and the entire fixing component must be replaced, which is very expensive at around 1,500 yuan / set. The price of domestic substitutes is around 900 yuan / set, but they are not durable.

[0004] During the use of the fixing assembly, in order to ensure the normal operation of the fixing film, the fixing film needs to be used with clean high-temperature resistant silicone oil, regardless of whether it is an oil-free cloth or an oil-cloth design (the oil-cloth design can only retain silicone oil better and delay oil shortage). However, as long as there is no oil, the fixing assembly cannot work normally. There are no auxiliary rotating parts at both ends of the flexible fixing film inside the fixing assembly. The edges at both ends of the film roller are in direct friction contact with the mounting parts at both ends, which can easily cause the edges of the film ends to be damaged. The high-temperature oil cloth inside the fixing film will overheat under long-term high-temperature use, and the added silicone oil in the oil cloth will burn, or the oil cloth will lack oil, which will cause the fixing film to fail to achieve the expected use effect in subsequent use. In addition, the toner used in the printer's operation and external dust will enter the fixing film and adhere to the oiled high-temperature oil cloth. Under the action of high temperature, the viscosity of the surface of the oil cloth is enhanced, which will cause the fixing film to fail to achieve the expected use effect in subsequent use. This will affect the rotation effect of the fixing film, and if the oily cloth adhered to the toner is not replaced in time, the fixing film will have pits and creases after working for a certain period of time. The above problems will affect the working effect of the fixing assembly, and the fixing assembly is one of the core components of the printer. The cost of repair and replacement is relatively high. During use, the fixing film used in some equipment will be broken or damaged after the number of printed papers reaches about 5,000 to 8,000, and the service life is extremely short. Therefore, the fixing assembly as a whole or its internal components need to be replaced frequently, which increases the cost of using the printer. Utility Model Content

[0005] In order to overcome the shortcomings that there are no auxiliary rotating parts at both ends of the fixing film in the existing fixing assembly, and the edges at both ends of the film roller are in direct friction contact with the mounting parts at both ends, which makes it easy for the edges of the film ends to be damaged, and the high-temperature oil cloth inside the fixing film is easy to stick to carbon powder during operation. If the oil cloth is not replaced in time, the film surface will have pits and creases after a certain period of operation, resulting in a short service life. The fixing assembly needs to be replaced frequently as a whole or in parts, which increases the cost of using the printer. The purpose is to provide a fixing roller that can be used as a replacement for the original fixing film when the original film-type fixing assembly is damaged, which does not require the auxiliary use of high-temperature oil cloth, the roller body is not easy to be damaged, is more durable, has a long service life, and reduces the cost of replacing original parts. It is an alternative durable fixing assembly.

[0006] The technical implementation scheme of the utility model is: a durable fixing component, including a base, a shell, a grooved rod, a mounting rod, a bracket, a fixed plate, an active roller, a heating lamp, a fixing roller, a thermistor sensor 1, a temperature sensor and a thermistor sensor 2. The shell is installed on the upper part of the base, and the mounting rods are fixedly connected to the left and right sides of the upper part of the base. A bracket is slidably arranged between the mounting rods, a fixing plate is fixedly connected to the front side of the lower part of the bracket, and an active roller is rotatably arranged on one side of the rear part of the base near the lower part of the shell. The lower part of the bracket is buckled with the base through the grooved rod, and a heating tube is fixedly arranged at the rear of the bracket. The left and right ends of the heating tube pass through the left and right sides of the bracket respectively, and the outside of the heating tube in the inner area of ​​the bracket is wrapped with a fixing roller, and the fixing roller is rotatably connected to the bracket. A thermistor sensor 1 is fixedly installed on the inner front of the fixing plate, a thermistor sensor 2 is fixedly connected to the right side of the lower part of the bracket, and a temperature sensor is fixedly arranged on the left part of the inner front of the fixing plate.

[0007] As a preferred technical solution of the utility model, it includes a mounting plate, a mounting plate is fixedly provided on the front side of the lower part of the base, two sets of separation claw assemblies are arranged on the mounting plate, and the separation claw assemblies include: a connecting plate, a fixed rod and a claw, a connecting plate is slidably provided on the mounting plate, a fixed rod is fixedly connected to the inner side of the connecting plate, and no less than 4 claws are rotatably provided on the fixed rod at even intervals, and the upper part of the claw is in contact with the surface of the fixing roller.

[0008] As a preferred technical solution of the utility model, it also includes bearings, and the left and right ends of the fixing roller are rotatably connected to the left and right sides of the bracket through the bearings.

[0009] As a preferred technical solution of the utility model, it also includes a clamping block. The clamping blocks are symmetrically arranged on the left and right sides of the bracket, and the left and right ends of the heating tube are installed on the bracket through the clamping blocks.

[0010] As a preferred technical solution of the utility model, it also includes a wire groove, and the wire groove is arranged on the lower part of the front side of the bracket and the front side of the fixing plate.

[0011] As a preferred technical solution of the utility model, the separation claw assembly is modularly arranged on the fixed plate.

[0012] As a preferred technical solution of the utility model, the lower part of the claw is connected to the fixing rod through a torsion spring.

[0013] The beneficial effects of the utility model are:

[0014] The utility model optimizes the component structure of the fixing assembly by arranging a roller-type fixing roller to replace the fixing film. The structure is simple, the service life is long, and the maintenance is convenient. The replacement frequency of the fixing roller and the supporting parts can be greatly reduced, and the maintenance and use cost of the copying and printing equipment can be reduced.

[0015] The utility model provides a clamping claw to guide the transmission direction of the paper, thereby preventing the transmitted paper from penetrating again from the lower part of the rolling fixing roller to cause a paper jam, reducing the equipment downtime caused by paper transmission failure, and improving the use stability of the printing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model without the fixing plate.

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the utility model without the fixing component.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the connecting plate, fixing rod, claws and other components of the utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the fixing assembly of the utility model.

[0021] Figure 6 This is a cross-sectional view of the fixing roller in the fixing assembly of the utility model.

[0022] Marked in the figure: 1: base, 2: shell, 21: grooved rod, 3: mounting rod, 4: bracket, 5: fixing plate, 6: active roller, 7: bearing, 8: heating lamp tube, 9: fixing roller, 10: temperature sensor, 11: thermal sensor 1, 12: thermal sensor 2, 131: mounting plate, 13: block, 14: connecting plate, 140: fixing rod, 141: claw, 15: wire groove. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0024] Embodiment 1: A durable fixing assembly, such as Figure 1-6 As shown, it includes a base 1, a shell 2, a grooved rod 21, a mounting rod 3, a bracket 4, a fixing plate 5, an active roller 6, a heating tube 8, a fixing roller 9, a thermal sensor 1 11, a temperature sensor 10 and a thermal sensor 2 12, which are made of aluminum alloy and whose shapes and layouts are customized according to the model of the printing device. A shell 2 made of plastic material is installed on the upper part of the base 1. The upper part of the shell 2 is provided with an arc surface for guiding the paper to enter. The left and right sides of the upper part of the base 1 are fixedly connected with obliquely arranged mounting rods 3. The front parts of the mounting rods 3 are provided with threaded holes. Brackets 4 are slidably arranged between the mounting rods 3. The lower part of the bracket 4 is buckled with the base 1 through the grooved rod 21. The front side of the lower part of the bracket 4 is fixedly connected with a fixing plate 5 made of aluminum alloy. The rear part of the base 1 is close to the lower part of the shell 2 and is rotatably provided with an active roller 6.

[0025] A heating tube 8 is fixedly provided at the rear of the bracket 4, and the left and right ends of the heating tube 8 pass through the left and right sides of the bracket 4 respectively. A fixing lamp for heating is provided inside the heating tube 8, and a fixing roller 9 is wrapped outside the heating tube 8 in the inner area of ​​the bracket 4. The fixing lamp of the heating tube 8 irradiates the inside of the fixing roller 9 for heating. The heat during heating is transferred to the surface of the fixing roller 9 through heat transfer, so that the surface temperature of the fixing roller 9 increases. The fixing roller 9 is rotatably connected to the bracket 4, and the fixing roller 9 is fixed outside the heating tube 8. When the fixing roller 9 rotates, the heating tube 8 does not Rotation, the surface of the fixing roller 9 is coated with a coating of special material, which is not easy to be damaged. The surface of the fixing roller 9 is smooth, the structure is simple, and the maintenance is convenient. When in use, there is no need to equip it with oil cloth to assist in rotation. There will not be problems such as using a fixing film, where the fixing film itself is relatively fragile and is affected by the state of internal components, creases and damages during use, affecting normal use. When the fixing roller 9 is in use, the number of printed papers can reach 100,000 to 150,000. Compared with the fixing film, the fixing roller 9 has a longer service life and is more durable, and its price is 1 / 5 of that of the fixing film. Reduce the loss of the fixing roller 9 itself in daily use, and the impact on the cost of equipment use; after the bracket 4 is installed on the mounting rod 3, the fixing roller 9 on the bracket 4 will roll and contact with the surface of the active roller 6. The friction between the active roller 6 and the surface of the fixing roller 9 is relatively large. When the active roller 9 rolls, it will drive the fixing roller 9 to rotate in the opposite direction. Through the contact transmission of the active roller 6, the original fixing film roller needs to be used through an external power component to change the way it is used, avoiding the problem of troublesome installation and disassembly. It is more convenient during maintenance and replacement. When the printing device is working, the paper will pass through the middle of the fixing roller 9 and the active roller 6. Through the external power source, the active roller 6 rotates and drives the fixing roller 9 to rotate in the opposite direction. Under the action of the rolling active roller 6 and the fixing roller 9, the paper will be transmitted between the housing 2 and the bracket 4. The paper will gradually and completely contact with the fixing roller 9, and the fixing roller 9 is heated by the heating tube 8. Under the action of the heating tube 8, the surface of the fixing roller 9 is heated to a certain temperature, and the toner transferred to the paper is heated and melted, so that it penetrates the fiber layer pores near the surface of the paper;

[0026] After the bracket 4 is installed, a spring is placed on the mounting rod 3. After the spring is installed, a screw provided with the threaded hole is screwed into the threaded hole of the mounting rod 3. The pressure of the spring squeezing the bracket 4 can be adjusted by the screw, thereby adjusting the squeezing force between the fixing roller 9 and the active roller 6;

[0027] A temperature sensor 10 is fixedly provided on the left front inner side of the fixing plate 5 for measuring the surface temperature of the fixing roller 9, a thermistor 11 is fixedly installed on the front inner side of the fixing plate 5, and a thermistor 2 12 is fixedly connected to the right lower part of the bracket 4. Thermistor 11 and thermistor 2 12 face the fixing roller side. The purpose is to detect the temperature of the fixing roller 9 through the temperature sensor 10 and keep it within a specific temperature range. When the temperature is too high, the power supply of the heating tube 8 will be cut off.

[0028] Embodiment 2: Based on embodiment 1, Figure 3-4 As shown, it includes a mounting plate 131, the front side of the lower part of the base 1 is fixedly connected with the mounting plate 131, the mounting plate 131 is horizontally placed on the front side of the base 1, and two groups of separation claw assemblies are arranged on the mounting plate 131, the separation claw assemblies include: a connecting plate 14, a fixing rod 140 and a claw 141, a connecting plate 14 is slidably provided on the mounting plate 131, a fixing rod 140 is fixedly connected to the inner side of the connecting plate 14, and no less than three claws 141 are rotatably arranged on the fixing rod 140 at even intervals, the claw 141 is used to guide the transmission direction of the paper to prevent the transmitted paper from penetrating again from the lower part of the rolling fixing roller 9 to cause paper jam, the upper part of the claw 141 is slightly in contact with the surface of the fixing roller 9, the claw 141 should be made of a material that causes less friction damage to the fixing roller 9, while not affecting the guidance of the paper, avoiding scratches on the surface of the fixing roller 9.

[0029] like Figure 2 , Figure 5 and Figure 6 As shown, it also includes a bearing 7. The left and right ends of the fixing roller 9 are rotatably connected to the left and right sides of the bracket 4 respectively through the bearings 7. The bearings 7 reduce the friction between the fixing roller 9 and the bracket 4 during rotation, ensuring that the fixing roller 9 rotates more smoothly on the bracket 4, reducing the wear of the rotating part of the fixing roller 9 due to the rotational friction, extending the service life of the fixing roller 9, and reducing the additional energy consumption caused by the large friction.

[0030] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, it also includes a clamping block 13. The clamping blocks 13 are symmetrically arranged on the left and right sides of the bracket 4. The left and right ends of the heating tube 8 are installed on the bracket 4 through the clamping blocks 13. The purpose is that when the surface of the fixing roller 9 is dirty and needs to be wiped or the surface is damaged and needs to be replaced, the heating tube 8 of the fixing component can be quickly disassembled and assembled through the clamping block 13, saving time.

[0031] like Figure 1 As shown, it also includes a wire groove 15. The lower front part of the bracket 4 and the front side of the fixing plate 5 are both provided with the wire groove 15. The wire groove 15 is used to guide and fix the lines when the components are installed, so that the connected lines can be neatly arranged on the fixing assembly to avoid the scattered equipment lines interfering with the components during operation and causing obstructions.

[0032] In a preferred embodiment, the separation claw assembly is modularly arranged on the upper part of the fixed plate 5, and the separation claw assembly is integratedly disassembled and installed through modularization. When the claws 141 need to be replaced and cleaned, there is no need to disassemble them one by one, which is more convenient.

[0033] In a preferred embodiment: the lower part of the claw 141 is connected to the fixed rod 140 through a torsion spring. In a special printing environment, such as a humid environment, in order to ensure the effect of paper transmission, the claw 141 can also be connected to the fixed rod through a torsion spring to ensure that the upper part of the claw 141 can maintain contact with the fixing roller 9. The above embodiment is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. Therefore, all equivalent changes made to the contents described in the claims of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A durable fixing assembly, comprising a base (1), a shell (2), a grooved rod (21) and a mounting rod (3), wherein the shell (2) is mounted on the upper part of the base (1), and the mounting rods (3) are fixedly connected to the left and right sides of the upper part of the base (1); Its characteristics are: The device also comprises a bracket (4), a fixing plate (5), an active roller (6), a heating tube (8), a fixing roller (9), a thermal sensor 1 (11), a temperature sensor (10) and a thermal sensor 2 (12); the bracket (4) is slidably arranged between the mounting rods (3); the fixing plate (5) is fixedly connected to the front side of the lower part of the bracket (4); the active roller (6) is rotatably arranged on one side of the rear part of the base (1) close to the lower part of the shell (2); the lower part of the bracket (4) is buckled with the base (1) through a grooved rod (21); A heating tube (8) is fixedly provided at the rear of the bracket (4), and the left and right ends of the heating tube (8) respectively pass through the left and right sides of the bracket (4), and a fixing roller (9) is wrapped around the outside of the heating tube (8) in the inner area of ​​the bracket (4), and the fixing roller (9) is rotatably connected to the bracket (4), and a thermal sensor 1 (11) is fixedly installed at the inner front of the fixed plate (5), and a thermal sensor 2 (12) is fixedly connected to the right side of the lower part of the bracket (4), and a temperature sensor (10) is fixedly provided at the inner front left of the fixed plate (5).

2. A durable fixing assembly as claimed in claim 1, characterized in that: The invention comprises a mounting plate (131), the mounting plate (131) is fixedly provided on the front side of the lower part of the base (1), two sets of separation claw assemblies are arranged on the mounting plate (131), and the separation claw assemblies comprise: a connecting plate (14), a fixing rod (140) and a clamping claw (141), a connecting plate (14) is slidably provided on the mounting plate (131), a fixing rod (140) is fixedly connected to the inner side of the connecting plate (14), and no less than three clamping claws (141) are rotatably provided on the fixing rod (140) at even intervals, and the upper part of the clamping claw (141) contacts the surface of the fixing roller (9).

3. A durable fixing assembly as claimed in claim 2, characterized in that: It also includes a bearing (7), and the left and right ends of the fixing roller (9) are rotatably connected to the left and right sides of the bracket (4) through the bearing (7).

4. A durable fixing assembly as claimed in claim 3, characterized in that: It also includes a clamping block (13), the clamping blocks (13) are symmetrically arranged on the left and right sides of the bracket (4), and the left and right ends of the heating tube (8) are installed on the bracket (4) through the clamping blocks (13).

5. A durable fixing assembly as claimed in claim 4, characterized in that: It also includes a wire groove (15), and the wire groove (15) is arranged on the lower front part of the bracket (4) and the front side of the fixing plate (5).

6. A durable fixing assembly as claimed in claim 5, characterized in that The separation claw assembly is modularly arranged on the fixing plate (5).

7. A durable fixing assembly as claimed in claim 6, characterized in that: The lower part of the claw (141) is connected to the fixing rod (140) via a torsion spring.

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