阅读说明：本技术 一种可调节送粉辊扭矩的硒鼓 (Toner cartridge capable of adjusting torque of toner feeding roller ) 是由 彭煦 韦华生 于 2020-08-25 设计创作，主要内容包括：一种可调节送粉辊扭矩的硒鼓,涉及激光打印机技术领域,包含粉仓、调节支架和送粉辊齿轮组。所述粉仓的两端各有个半径大于送粉辊铁轴半径的调节支架安装孔,孔内有一对中心轴对称的、与轴心平行的滑槽卡口,粉仓齿轮端的调节支架安装孔外侧有两个内陷的与安装孔同轴心的圆形的台阶；所述调节支架为内含一个不同圆心的圆孔的圆柱体,一端有两个卡扣,另一端为D字型,D字型靠圆柱体中部一侧有个外环；所述送粉辊齿轮组由一个送粉辊齿轮内啮合一个由内齿轮与外齿轮形成的复合齿轮组成,由于调节支架内圆孔与外圆柱体不同圆心,因此在旋转调节支架时可改变显影辊和送粉辊之间的轴心距离,达到调节送粉辊的扭矩的目的,提高产品品质。(The utility model provides a selenium drum of adjustable powder feed roller moment of torsion, relates to laser printer technical field, contains powder storehouse, adjusting bracket and powder feed roller gear train. The two ends of the powder bin are respectively provided with an adjusting bracket mounting hole with the radius larger than the radius of an iron shaft of the powder feeding roller, a pair of sliding groove bayonets with central axes symmetrical and parallel to the shaft center are arranged in the adjusting bracket mounting holes, and two sunken circular steps coaxial with the mounting holes are arranged on the outer sides of the adjusting bracket mounting holes at the gear end of the powder bin; the adjusting bracket is a cylinder containing round holes with different circle centers, one end of the adjusting bracket is provided with two buckles, the other end of the adjusting bracket is in a D shape, and one side of the D shape close to the middle part of the cylinder is provided with an outer ring; the powder feeding roller gear set is composed of a powder feeding roller gear, a composite gear formed by an internal gear and an external gear, and the inner circle center and the outer circle center of the bracket are adjusted to be different, so that the axial distance between the developing roller and the powder feeding roller can be changed when the bracket is adjusted in a rotating mode, the purpose of adjusting the torque of the powder feeding roller is achieved, and the product quality is improved.)

1. The utility model provides a toner cartridge of adjustable powder feed roller moment of torsion which characterized in that: comprises a powder bin (1), a powder outlet knife (2), a developing roller (3), a powder feeding roller (4), a side cover (5), an adjusting bracket (6), an adjusting handle (7) and a powder feeding roller gear set (9); the powder bin (1) is an external structural member of the toner cartridge, and the powder outlet knife (2), the developing roller (3), the powder feeding roller (4), the adjusting bracket (6) and the side cover (5) are arranged on the powder bin (1); the powder outlet knife (2) consists of a metal knife rest and a rectangular blade, the metal knife rest is fixedly arranged on one side of a powder outlet of the powder bin (1), and one side of the blade is fixed on the metal knife rest and extends towards the powder outlet; the developing roller (3) is provided with a metal shaft in the middle, a cylindrical glue layer with the length smaller than that of the metal shaft is wrapped outside the developing roller, the developing roller (3) is arranged above the powder outlet of the powder bin (1) and is arranged in parallel with the powder outlet knife (2), and the surface of the developing roller is tightly contacted with the blade edge of the powder outlet knife (2); the powder feeding roller (4) is formed by wrapping a layer of sponge with the length smaller than that of the metal shaft outside the metal shaft, the powder feeding roller (4) is arranged below the developing roller (3) and the powder discharging knife (2) and is parallel to the developing roller (3), and the sponge layer is tightly contacted with a glue layer of the developing roller (3); the side cover (5) is a protective cover arranged outside the gear set on the side surface of the powder bin (1); the two ends of the powder bin (1) are respectively provided with an adjusting bracket mounting hole (1-1) with the radius larger than the radius of an iron shaft of the powder feeding roller (4), the outer side of the adjusting bracket mounting hole (1-1) is provided with marks of scales (1-5) distributed in an arc shape, a pair of sliding groove-shaped bayonets (1-2) with central axes symmetrical and parallel to the axis are arranged in the adjusting bracket mounting hole, the outer side of the adjusting bracket mounting hole (1-1) at the gear end of the powder bin (1) is provided with two sunken circular steps coaxial with the mounting hole, the steps from outside to inside are respectively a first step (1-3), the height of the second-stage step (1-4) is gradually reduced, the radius of the second-stage step is gradually reduced, the maximum outer diameter of the second-stage step (1-4) is larger than the maximum axial symmetry point distance of the bayonet (1-2) in the adjusting bracket mounting hole (1-1), and a fan-shaped notch is formed in the direction of the step and the bottom of the powder bin (1); the adjusting bracket (6) is a cylinder which is internally provided with a round hole with different circle centers and the radius equal to the radius of an iron shaft of the powder feeding roller (4), the outer diameter of the cylinder is equal to the inner diameter of an adjusting bracket mounting hole (1-1), one end of the cylinder is provided with two symmetrical buckles (6-2), the other end of the cylinder is D-shaped, one side of the D-shaped cylinder close to the middle part is provided with an outer ring, and the maximum radius of the outer ring is equal to the maximum radius of the second-stage step (1-4); the adjusting handle (7) is a circular ring with a D-shaped hole in the center, the edge of the circular ring is provided with a handle, and the handle is marked by an arrow; the powder feeding roller gear set (9) is formed by internally meshing a composite gear (9-2) with a powder feeding roller gear (9-1) which is an external gear, the composite gear (9-2) is formed by connecting an internal gear and an external gear, the external radius of the internal gear is equal to the maximum radius of the first-stage step (1-3), and the distance between the central axis after the powder feeding roller gear (9-1) is meshed with the composite gear (9-2) is equal to the distance between the central axis between the adjusting bracket (6) and the circular hole of the adjusting bracket (6).

Technical Field

The utility model provides a selenium drum of adjustable powder feed roller moment of torsion, relates to laser printer technical field, especially relates to a selenium drum of adjustable powder feed roller moment of torsion.

Background

The carbon powder of selenium drum can be divided into magnetic carbon powder and non-magnetic carbon powder, the transfer mode of two kinds of carbon powder is also different, the magnetic powder utilizes the magnetic roller with magnetism to adsorb it on the surface of magnetic roller, and the non-magnetic powder then need rely on the powder feed roller to supply the carbon powder to the developing roller surface, because the selenium drum of non-magnetic carbon powder when operation, must rely on the developing roller, send the mutual friction between powder feed roller and the carbon powder, make the carbon powder take sufficient static, if frictional force is too big then lead to the moment of torsion of selenium drum too big, the machine can't drive the selenium drum, frictional force is too little, then lead to the carbon powder electric quantity not enough to influence printing quality, therefore it is especially important to the selenium drum to control suitable moment of torsion. The friction factors influencing the development roller, the powder feeding roller and the carbon powder are as follows: the external diameters of the developing roller and the powder feeding roller, the material of the sponge on the outer layer of the powder feeding roller, the granularity of the carbon powder, the axial distance between the developing roller and the powder feeding roller and the like, so that the torque influence factors of the selenium drum of the non-magnetic carbon powder are more and are not easy to control.

Disclosure of Invention

The invention aims to solve the problems and provides a toner cartridge capable of adjusting the torque of a powder feeding roller, so that the product quality is improved.

The technical scheme of the invention is as follows: a toner cartridge capable of adjusting torque of a toner feeding roller comprises a toner bin, a toner discharging knife, a developing roller, the toner feeding roller, a side cover, an adjusting bracket, an adjusting handle and a toner feeding roller gear set. The powder bin is an external structural member of the toner cartridge, and the developing roller, the powder discharging knife, the powder feeding roller, the adjusting bracket and the side cover are arranged on the powder bin; the powder outlet knife consists of a metal knife rest and a rectangular blade, the metal knife rest is fixedly arranged on one side of a powder outlet of the powder bin, and one side of the blade is fixed on the metal knife rest and extends towards the powder outlet; the developing roller is provided with a metal shaft in the middle, a cylindrical glue layer with the length smaller than that of the metal shaft is wrapped outside the developing roller, the developing roller is arranged above the powder outlet of the powder bin and is arranged in parallel with the powder outlet knife, and the surface of the developing roller is tightly contacted with the blade edge of the powder outlet knife; the powder feeding roller is formed by wrapping a layer of sponge with the length smaller than that of the metal shaft outside the metal shaft, the powder feeding roller is arranged below the developing roller and the powder discharging knife and is parallel to the developing roller, and the sponge layer is tightly contacted with the glue layer of the developing roller; the side cover is a protecting cover arranged outside the gear set on the side surface of the powder bin; the powder bin is characterized in that two ends of the powder bin are respectively provided with an adjusting bracket mounting hole with the radius larger than the radius of a metal shaft of the powder feeding roller, the outer side of the adjusting bracket mounting hole is provided with scale marks distributed in an arc shape, a pair of chute-shaped bayonets with central axes symmetrical and parallel to the shaft center are arranged in the adjusting bracket mounting hole, two sunken circular steps with the same shaft center as the mounting hole are arranged on the outer side of the adjusting bracket mounting hole at the gear end of the powder bin, the steps are respectively a first step and a second step from outside to inside, the height of the steps is gradually reduced, the radius of the steps is gradually reduced, the maximum outer diameter of the second step is larger than the maximum axial symmetry point distance of the bayonets in the; the adjusting bracket is a cylinder which contains a round hole with different circle centers and the radius equal to the radius of the metal shaft of the powder feeding roller, the outer diameter of the cylinder is equal to the inner diameter of the mounting hole of the adjusting bracket, one end of the cylinder is provided with two symmetrical buckles, the other end of the cylinder is in a D shape, one side of the D shape close to the middle part of the cylinder is provided with an outer ring, and the maximum radius of the outer ring is equal to the maximum radius of the second-stage step; the adjusting handle is a circular ring with a D-shaped hole in the center, the edge of the circular ring is provided with a handle, and the handle is marked by an arrow; the powder feeding roller gear set is formed by a powder feeding roller gear which is an external gear and is internally meshed with a composite gear, the composite gear is formed by connecting an internal gear and an external gear, the external radius of the internal gear is equal to the maximum radius of the first step, and the distance between the powder feeding roller gear and the central shaft after the powder feeding roller gear is internally meshed with the composite gear is equal to the distance between the adjusting bracket and the central shaft between the round holes of the adjusting bracket.

The invention discloses a selenium drum principle capable of adjusting torque of a powder feeding roller, which is as follows: the two ends of a metal shaft of the powder feeding roller respectively penetrate out of adjusting bracket mounting holes at the two ends of the powder bin, the adjusting bracket is sleeved into the metal shaft of the powder feeding roller, a buckle is pressed in along a bayonet in the adjusting bracket mounting hole, the powder feeding roller rotates to the bottom by a certain angle, an adjusting handle is sleeved on one end of a D shape of the adjusting bracket, the adjusting bracket at the two ends is rotated by the adjusting handle to enable an arrow on the handle to point to two symmetrical scales, then a powder feeding roller gear is installed, a powder discharging knife and a developing roller are installed at a corresponding mounting position of the powder bin, finally a developing roller gear, a composite gear and a driving gear are installed, and side covers at the two ends are covered. Because the inner circle center of the inner circle hole of the adjusting bracket is different from the outer circle center of the outer cylinder, the axle center distance between the developing roller and the powder feeding roller can be changed when the adjusting bracket is rotated, the axle center distance between the developing roller and the powder feeding roller can be increased to reduce friction and torque, the axle center distance can be shortened to increase friction and torque, and the torque of the powder feeding roller can be changed by adjusting the axle center distance between the developing roller and the powder feeding roller.

The toner cartridge capable of adjusting the torque of the powder feeding roller has the beneficial effects that: the torque between the powder feeding roller and the developing roller of the adjustable toner cartridge prevents the product quality from being influenced due to overlarge torque, and improves the product quality.

Drawings

Fig. 1 is an isometric view of a toner cartridge with adjustable torque of a toner feed roller, fig. 2 is a schematic view of an end edge cover without a gear of the toner cartridge with adjustable torque of the toner feed roller, fig. 3 and fig. 4 are partial schematic views of an outer side of an adjusting bracket mounting hole of the toner cartridge with adjustable torque of the toner feed roller, fig. 5 is a partial schematic view of the toner cartridge with adjustable torque of the toner feed roller after an adjusting bracket and an adjusting handle are mounted at the gear end of the toner cartridge, fig. 6 is a sectional view and an isometric view of the adjusting bracket of the toner cartridge with adjustable torque of the toner feed roller, fig. 7 is a schematic view of an adjusting handle of the toner cartridge with adjustable torque of the toner feed roller, fig. 8 is a schematic view of a composite gear of the toner cartridge with adjustable torque of the toner feed roller, and fig. 9 is a sectional view of a gear set of the toner feed roller of the toner cartridge with adjustable torque of the toner feed roller. In the figure: the powder feeding device comprises a powder bin 1, an adjusting support mounting hole 1-1, a bayonet 1-2, a first-stage step 1-3, a second-stage step 1-4, scales 1-5, a powder discharging knife 2, a developing roller 3, a powder feeding roller 4, an edge cover 5, an adjusting support 6, a powder feeding roller metal shaft hole 6-1, a buckle 6-2, an adjusting handle 7, a developing roller gear 8, a powder feeding roller gear set 9, a powder feeding roller gear 9-1, a composite gear 9-2 and a driving gear 10.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings: referring to the attached drawings, the toner cartridge capable of adjusting the torque of the powder feeding roller comprises a powder bin 1, a powder discharging knife 2, a developing roller 3, a powder feeding roller 4, a side cover 5, an adjusting bracket 6, an adjusting handle 7 and a powder feeding roller gear set 9. The powder bin 1 is an external structural member of the toner cartridge, and the powder outlet knife 2, the developing roller 3, the powder feeding roller 4, the adjusting bracket 6 and the side cover 5 are arranged on the powder bin 1; the powder outlet knife 2 consists of a metal knife rest and a rectangular blade, the metal knife rest is fixedly arranged on one side of a powder outlet of the powder bin 1, and the blade is fixed on the metal knife rest and extends towards the powder outlet; the developing roller 3 is a metal shaft in the middle, a cylindrical glue layer with the length smaller than that of the metal shaft is wrapped outside the developing roller 3, the developing roller 3 is arranged above the powder outlet of the powder bin 1 and is arranged in parallel with the powder outlet knife 2, and the surface of the developing roller is tightly contacted with the blade edge of the powder outlet knife 2; the powder feeding roller 4 is formed by wrapping a layer of sponge with the length smaller than that of the metal shaft outside the metal shaft, the powder feeding roller 4 is arranged below the developing roller 3 and the powder discharging knife 2 and is parallel to the developing roller 3, and the sponge layer is tightly contacted with a glue layer of the developing roller 3; the side cover 5 is a protecting cover arranged outside the gear set on the side surface of the powder bin 1; the powder bin comprises a powder bin 1, a powder feeding roller 4, a powder bin gear, a powder bin mounting hole 1, a powder bin mounting hole 2, a powder bin mounting hole 1, a powder feeding roller 4, a powder feeding rollers, a powder; the adjusting bracket 6 is a cylinder which is internally provided with a round hole with different circle centers and the radius equal to that of the metal shaft of the powder feeding roller 4, the outer diameter of the cylinder is equal to the inner diameter of an adjusting bracket mounting hole 1-1, one end of the cylinder is provided with two symmetrical buckles 6-2, the other end of the cylinder is in a D shape, one side of the D shape close to the middle part of the cylinder is provided with an outer ring, and the maximum radius of the outer ring is equal to that of a second-stage step 1-4; the adjusting handle 7 is a circular ring with a D-shaped hole in the center, the edge of the circular ring is provided with a handle, and the handle is marked by an arrow; the powder feeding roller gear set 9 is formed by internally meshing a composite gear 9-2 with a powder feeding roller gear 9-1 which is an external gear, the composite gear 9-2 is formed by connecting an internal gear and an external gear, the external radius of the internal gear is equal to the maximum radius of the first-stage step 1-3, and the distance between the central axis after the powder feeding roller gear 9-1 is meshed with the composite gear 9-2 is equal to the distance between the central axis between the adjusting bracket 6 and the round hole of the adjusting bracket 6.

The invention relates to a method for realizing a toner cartridge capable of adjusting torque of a powder feeding roller, which comprises the following steps: firstly, two ends of a metal shaft of a powder feeding roller 4 respectively penetrate out of adjusting bracket mounting holes 1-1 at two ends of a powder bin 1, then an adjusting bracket 6 is sleeved into the metal shaft of the powder feeding roller 4, a buckle 6-2 is pressed in along a bayonet 1-2 in the adjusting bracket mounting hole 1-1, the metal shaft is rotated by a certain angle after reaching the end, an adjusting handle 7 is sleeved on one end of a D shape of the adjusting bracket 6, the adjusting bracket 6 at two ends is rotated by the adjusting handle 7 to enable an arrow on the handle to point to two symmetrical scales 1-5, then a powder feeding roller gear 9-1 is installed, a powder discharging knife 2 and a developing roller 3 are installed at a corresponding mounting position of the powder bin 1, and finally a developing roller gear 8, a composite gear 9-2 and a driving gear 10 are installed, and side covers 5 at two ends are covered. Because the metal shaft hole 6-1 of the powder feeding roller of the adjusting bracket 6 is different from the circle center of the outer cylinder, the axial distance between the developing roller 3 and the powder feeding roller 4 can be changed when the adjusting bracket 6 is rotated, the friction and the torque can be reduced by increasing the axial distance between the developing roller 3 and the powder feeding roller 4, the axial distance can be shortened, the friction and the torque can be increased, and the torque of the powder feeding roller 4 can be changed by adjusting the axial distance between the developing roller 3 and the powder feeding roller 4.