Paper feeding assembly of laser printer

Abstract

The utility model provides a paper feeding assembly of a laser printer, which comprises a bottom plate, a material conveying roller is arranged on the upper surface of the bottom plate, a suspension frame is arranged on the upper surface of the material conveying roller, the surface of the suspension frame is fixedly connected with a telescopic cylinder, one end of a telescopic arm of the telescopic cylinder is fixedly connected with a ventilation pipe, and the other end of the telescopic arm of the telescopic cylinder is fixedly connected with a transmission shaft. An air inlet pipe is fixedly connected to the surface of one end of the ventilation pipe, a side supporting plate is fixedly connected to one side of the bottom plate, and a paper storage mechanism is fixedly connected to the surface of the upper portion of the side supporting plate. And when a paper jam fault occurs, the equipment shell needs to be opened to process the paper.

Description

Technical Field

[0001] This utility model mainly relates to the field of printers, specifically to a paper feeding assembly for a laser printer. Background Technology

[0002] A laser printer is a printing output device that combines laser scanning technology and electrophotographic technology. A ruggedized monochrome laser printer typically consists of a base plate and a top cover. The base plate houses the printer mechanism, toner cartridge, paper feed mechanism, paper output mechanism, inverter, and filter components. The printer mechanism typically includes a main control board, paper feed rollers, paper output rollers, laser cartridge, positioning plate, and high-temperature heated roller. The top cover includes the main casing, control panel, and input / output interfaces.

[0003] In the invention patent application CN202121319097.4, published on March 11, 2022, entitled "A Paper Feeding Assembly for a Laser Printer", a laser printer body and a water outlet assembly are included. The water outlet assembly is fixed inside the laser printer body by screws. The invention is characterized in that: a paper feed assembly is placed on the lower inner side of the laser printer body, and a heat sink connected by screws is provided on the lower inner side of the laser printer body. The heat sink is attached to the paper feed assembly. The water outlet assembly is located above the middle of the paper feed assembly. This device can perform dehumidification before operation, thereby ensuring the dryness of the inside of the paper outlet assembly and helping to prevent the paper from becoming damp.

[0004] However, in actual use, the paper feeding component is not convenient to observe and maintain the paper storage location. When a paper jam occurs, the outer casing of the device needs to be opened to handle the paper. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model:

[0006] This utility model provides a paper feeding component for a laser printer, which solves the problem that the paper storage position is inconvenient to observe and maintain, and that the device casing needs to be opened to handle the paper when a paper jam occurs.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: a paper feeding assembly for a laser printer, comprising a base plate, a feeding roller disposed on the upper surface of the base plate, a suspension frame disposed on the upper surface of the feeding roller, a telescopic cylinder fixedly connected to the surface of the suspension frame, a ventilation pipe fixedly connected to one end of the telescopic arm of the telescopic cylinder, an air inlet pipe fixedly connected to one end of the ventilation pipe, a side support plate fixedly connected to one side of the base plate, and a paper storage mechanism fixedly connected to the upper surface of the side support plate.

[0009] Furthermore, the ventilation pipe forms a lifting structure above the conveying roller via a telescopic cylinder, a drying fan is provided on the surface of the other end of the air inlet pipe, and the paper storage mechanism is located on one side of the conveying roller.

[0010] Furthermore, the conveying roller includes a servo motor, a mushroom gearbox is provided on one side of the servo motor, a conveying roller base is provided on one side of the mushroom gearbox, a transmission gear set is provided on one side surface of the conveying roller base, and a conveying roller is connected to the upper surface of the conveying roller base on one side of the transmission gear set.

[0011] Furthermore, the servo motor and the bevel gear inside the mushroom gearbox form a transmission structure, the gear inside the mushroom gearbox and the transmission gear set form a transmission structure, and two conveying rollers are provided, which form a rotation structure on the base surface of the conveying rollers through the transmission gear set.

[0012] Furthermore, the paper storage mechanism includes a paper storage board, a paper conveying groove on the surface of the paper storage board, a paper conveying roller on the surface of the paper conveying groove, a drive motor on one side of the paper conveying roller below the paper storage board, a fixed baffle on one side of the paper conveying groove, a front baffle on one side of the fixed baffle, a paper groove on the lower surface of the front baffle, a fixed abutment fixedly connected to the other end of the front baffle, a telescopic screw threadedly connected to the surface of the fixed abutment, and a movable limiting plate movably connected to the other end of the telescopic screw.

[0013] Furthermore, the paper conveying roller and the transmission motor form a transmission structure, and the paper is driven into the paper tray by the rolling of the paper conveying roller on the surface of the paper tray. The movable limiting plate forms a telescopic structure on the side of the fixed abutment plate through the telescopic screw.

[0014] 3. Beneficial effects:

[0015] This invention features a reasonable design. During paper loading, the paper stack is placed on the upper surface of the paper conveying trough in the paper storage mechanism, with the bottom of the paper stack in contact with the rollers. By rotating the telescopic screw, the movable limit plate moves, causing the paper stack to press firmly against the fixed baffle. At this point, the drive motor is activated, driving the paper conveying rollers to rotate, which in turn pushes the paper on its surface out of the paper slot below the front baffle, pushing the paper forward to the surface of the feed rollers for secondary paper loading. Since the paper storage mechanism is located outside the printer, when paper jams occur, the paper stack can be removed from above the paper conveying trough, thus clearing the jammed paper and restoring normal operation.

[0016] After the paper extends from the paper slot below the front stop plate, it is pushed onto the surface of the feed roller. The servo motor is activated to drive the transmission gear set and the feed roller to move the paper forward. During this process, the drying fan blows air into the ventilation pipe through the air inlet pipe, so that the ventilation pipe blows air downwards to dry the paper, avoiding paper jams caused by moisture. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the material conveying roller of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the transmission gear set of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the paper storage mechanism of this utility model.

[0021] Figure label:

[0022] 1. Base plate; 2. Feeding roller; 201. Servo motor; 202. Mushroom gearbox; 203. Feeding roller base; 204. Transmission gear set; 205. Feeding roller; 3. Hanging frame; 4. Telescopic cylinder; 5. Ventilation pipe; 6. Air inlet pipe; 7. Side support plate; 8. Paper storage mechanism; 801. Paper storage board; 802. Paper conveying roller; 803. Paper conveying roller; 804. Transmission motor; 805. Fixed baffle; 806. Front baffle board; 807. Paper trough; 808. Fixed stop plate; 809. Telescopic screw; 810. Movable limit plate. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0027] See attached document Figure 1-4 The device includes a base plate 1, a feeding roller 2 on the upper surface of the base plate 1, a suspension frame 3 on the upper surface of the feeding roller 2, a telescopic cylinder 4 fixedly connected to the surface of the suspension frame 3, a ventilation pipe 5 fixedly connected to one end of the telescopic arm of the telescopic cylinder 4, an air inlet pipe 6 fixedly connected to one end of the ventilation pipe 5, a side support plate 7 fixedly connected to one side of the base plate 1, and a paper storage mechanism 8 fixedly connected to the upper surface of the side support plate 7. The ventilation pipe 5 forms a lifting structure above the feeding roller 2 through the telescopic cylinder 4, and a drying fan is provided on the other end of the air inlet pipe 6. The paper storage mechanism 8 is located on one side of the feeding roller 2. This device performs primary feeding through the external paper storage mechanism 8 and secondary paper feeding through the feeding roller 2, which can sort out jammed paper and achieve normal operation.

[0028] The conveying roller 2 includes a servo motor 201. A mushroom gearbox 202 is provided on one side of the servo motor 201. A conveying roller base 203 is provided on one side of the mushroom gearbox 202. A transmission gear set 204 is provided on one side of the surface of the conveying roller base 203. A conveying roller 205 is connected to the upper surface of the conveying roller base 203 via the transmission gear set 204. The servo motor 201 and the bevel gear inside the mushroom gearbox 202 form a transmission structure. The gear inside the mushroom gearbox 202 and the transmission gear set 204 form a transmission structure. There are two conveying rollers 205, which form a rotating structure on the surface of the conveying roller base 203 through the transmission gear set 204.

[0029] In this embodiment, after the paper extends from the paper slot 807 below the front stop plate 806, it is pushed to the surface of the feed roller 205. The servo motor 201 is started to drive the transmission gear set 204 and the feed roller 205 to move the paper forward. During this process, the drying fan blows air into the ventilation pipe 5 through the air inlet pipe 6, so that the paper below the ventilation pipe 5 is dried by the air blowing, thus avoiding paper jam failure caused by moisture.

[0030] The paper storage mechanism 8 includes a paper storage board 801, a paper conveying groove 802 on the surface of the paper storage board 801, a paper conveying roller 803 on the surface of the paper conveying groove 802, a drive motor 804 on one side of the paper conveying roller 803 below the paper storage board 801, a fixed baffle 805 on one side of the paper conveying groove 802, a front baffle 806 on one side of the fixed baffle 805, a paper groove 807 on the lower surface of the front baffle 806, and the front baffle 806... 6. A fixed abutment plate 808 is fixedly connected to the other end surface. A telescopic screw 809 is threadedly connected to the surface of the fixed abutment plate 808. A movable limiting plate 810 is movably connected to the other end surface of the telescopic screw 809. The paper conveying roller 803 and the transmission motor 804 form a transmission structure. The paper conveying roller 803 drives the paper into the paper tray 807 by rolling on the surface of the paper conveying tray 802. The movable limiting plate 810 forms a telescopic structure on one side of the fixed abutment plate 808 through the telescopic screw 809.

[0031] In this embodiment, during the paper feeding operation, the paper stack is placed on the surface above the paper conveying trough 802 in the paper storage mechanism 8, so that the bottom of the paper stack is in contact with the roller. By rotating the telescopic screw 809, the telescopic screw 809 drives the movable limiting plate 810 to move, thereby causing the paper stack to be pressed against the fixed baffle 805. At this time, the drive motor 804 is started, and the drive motor 804 drives the paper conveying roller 803 to rotate, thereby pushing the paper on its surface out of the paper trough 807 below the front baffle plate 806, pushing the paper forward to the surface of the conveying roller 2 for secondary paper feeding. Since the paper storage mechanism 8 is located outside the printer, when paper jam occurs, the paper stack is removed from above the paper conveying trough 802, which can realize the sorting of jammed paper and normal operation.

[0032] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A paper feeding assembly for a laser printer, characterized in that... The device includes a base plate (1), a conveying roller (2) on the upper surface of the base plate (1), a suspension frame (3) on the upper surface of the conveying roller (2), a telescopic cylinder (4) fixedly connected to the surface of the suspension frame (3), a ventilation pipe (5) fixedly connected to one end of the telescopic arm of the telescopic cylinder (4), an air inlet pipe (6) fixedly connected to one end of the ventilation pipe (5), a side support plate (7) fixedly connected to one side of the base plate (1), and a paper storage mechanism (8) fixedly connected to the upper surface of the side support plate (7).

2. The paper feeding assembly of a laser printer according to claim 1, characterized in that: The ventilation pipe (5) forms a lifting structure above the conveying roller (2) through the telescopic cylinder (4), and a drying fan is provided on the surface of the other end of the air inlet pipe (6). The paper storage mechanism (8) is located on one side of the conveying roller (2).

3. The paper feeding assembly of a laser printer according to claim 1, characterized in that: The conveying roller (2) includes a servo motor (201), a mushroom gearbox (202) is provided on one side of the servo motor (201), a conveying roller base (203) is provided on one side of the mushroom gearbox (202), a transmission gear set (204) is provided on one side surface of the conveying roller base (203), and a conveying inner roller (205) is connected to the upper surface of the conveying roller base (203) on one side of the transmission gear set (204).

4. The paper feeding assembly of a laser printer according to claim 3, characterized in that: The servo motor (201) and the bevel gear inside the mushroom gearbox (202) form a transmission structure. The gear inside the mushroom gearbox (202) and the transmission gear set (204) form a transmission structure. There are two inner conveying rollers (205), which form a rotating structure on the surface of the conveying roller base (203) through the transmission gear set (204).

5. The paper feeding assembly of a laser printer according to claim 1, characterized in that: The paper storage mechanism (8) includes a paper storage board (801), a paper conveying groove (802) is provided on the surface of the paper storage board (801), a paper conveying roller (803) is provided on the surface of the paper conveying groove (802), a drive motor (804) is provided on one side of the paper conveying roller (803) below the paper storage board (801), a fixed baffle (805) is provided on one side of the paper conveying groove (802), a front baffle board (806) is provided on one side of the fixed baffle board (805), a paper groove (807) is provided on the lower surface of the front baffle board (806), a fixed abutment (808) is fixedly connected to the other end of the front baffle board (806), a telescopic screw (809) is threadedly connected to the surface of the fixed abutment (808), and a movable limit plate (810) is movably connected to the other end of the telescopic screw (809).

6. The paper feeding assembly of a laser printer according to claim 5, characterized in that: The paper conveying roller (803) and the drive motor (804) form a transmission structure, and the paper is driven into the paper tray (807) by the rolling of the paper conveying roller (803) on the surface of the paper tray (802). The movable limiting plate (810) forms a telescopic structure on one side of the fixed stop plate (808) by the telescopic screw (809).

Images