Automatic paper feeding mechanism for copying machine

Abstract

The utility model discloses an automatic paper feeding mechanism for a copying machine, and relates to the technical field of copying machines. The automatic paper feeding mechanism for the copying machine comprises a paper feeding bin, a micro motor is assembled on the side face of the paper feeding bin, and a paper feeding roller is in transmission connection with the side face of the micro motor; a pressing assembly is arranged in the paper feeding bin and comprises a hydraulic bin, the outer side of the paper feeding roller is in transmission connection with a first gear, the bottom of the hydraulic bin is slidably connected with a first toothed bar, the top of the first toothed bar is fixedly connected with a spring, and the end, away from the first toothed bar, of the hydraulic bin is slidably connected with a push rod. According to the automatic paper feeding mechanism for the copying machine, when corresponding paper feeding operation is carried out, paper on the top of the paper feeding roller can be pressed to a certain degree in cooperation with a hydraulic bin, a first gear, a first toothed bar, a spring, a push rod and an arc-shaped pressing plate, and the possibility that paper is jammed in the conveying process of the paper is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of copiers, in particular to an automatic paper feeding mechanism for copiers. Background Art

[0002] A copier is a device that creates a copy of a written, drawn, or printed manuscript at full size, enlarged, or reduced size. Copiers are fast and easy to use, and are a common office appliance used in a wide variety of workplaces.

[0003] Chinese patent CN110171730B, authorized and announced on August 7, 2020, discloses an automatic paper feeding mechanism for a copier, which includes a U-shaped bracket, a paper feeding assembly, a guide assembly, a baffle, a connecting plate, and a movable assembly; the U-shaped bracket has a through groove on each of its opposite inner walls; a horizontal plate is fixedly mounted on the inner bottom surface of the U-shaped bracket; a pair of vertical plates are provided on the upper surface of the horizontal plate; an inverted L-shaped plate is fixedly mounted between the vertical plates; a pair of sliding rods are fixedly mounted on the lower surface of the protruding portion of the inverted L-shaped plate; a pressure paper plate is slidably connected to the side surface of the pair of sliding rods; the paper feeding assembly includes a rotating shaft; one end of the rotating shaft is fixedly mounted to the output shaft of the first motor; and a paper feeding wheel is fixedly mounted in the middle of the rotating shaft. In the above application document, the corresponding paper feeding operation is performed by using a rotating paper feeding roller, but when the paper feeding roller feeds paper, its top is not pressed accordingly, so that the paper may still cause paper jams during the transportation process. Utility Model Content

[0004] In response to the shortcomings of the prior art, the present invention provides an automatic paper feed mechanism for a copier, which solves the problems raised in the above-mentioned background art. To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic paper feed mechanism for a copier, comprising a paper feed bin, a micro motor mounted on the side of the paper feed bin, and a paper feed roller connected to the side of the micro motor;

[0005] A pressing assembly is provided inside the paper feeding bin, and the pressing assembly includes a hydraulic bin, the outer side of the paper feeding roller is transmission-connected with gear 1, the bottom of the hydraulic bin is slidingly connected with gear rod 1, the top of gear rod 1 is fixedly connected with a spring, the end of the hydraulic bin away from gear rod 1 is slidingly connected with a push rod, and the bottom of the push rod is fixedly connected with an arc-shaped pressing plate.

[0006] Preferably, only half of the teeth are provided on the outer side of the gear 1, and the gear 1 can be engaged with the gear rod 1 through the teeth.

[0007] Preferably, one end of the spring away from the gear rod is located in the hydraulic compartment and is fixedly connected to the inner wall of the hydraulic compartment.

[0008] Preferably, an auxiliary component is provided inside the paper feeding bin, and the auxiliary component includes a fixed groove, the internal rotation of the arc-shaped pressing plate is connected to a penetrating rotating shaft, the side of the rotating shaft is fixedly connected to gear 2, the inner wall of the paper feeding bin is fixedly connected to gear rod 2, and the outer side of the rotating shaft is fixedly connected to a rolling wheel.

[0009] Preferably, the fixing groove is provided at an inner position of the arc-shaped pressing plate.

[0010] Preferably, the second gear rod is located on the side of the second gear, and the second gear rod and the second gear are in meshing state.

[0011] The utility model provides an automatic paper feeding mechanism for a copier, which has the following beneficial effects:

[0012] (1) When the automatic paper feeding mechanism of the copier performs the corresponding paper feeding operation, the hydraulic chamber, gear one, gear rod one, spring, push rod and arc-shaped pressing plate can be used to press the paper on the top of the paper feeding roller to reduce the possibility of paper jam during the feeding process.

[0013] (2) The automatic paper feeding mechanism for the copier can further improve the use effect of the pressing component by cooperating with the fixed groove, the rotating shaft, the second gear, the second gear rod and the rolling wheel when the arc-shaped pressing plate moves downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the pressing component of the present invention;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the auxiliary component of the utility model.

[0018] In the picture:

[0019] 100, paper feed bin; 200, micro motor; 300, paper feed roller;

[0020] 400, pressing assembly; 401, hydraulic chamber; 402, gear 1; 403, gear rod 1; 404, spring; 405, push rod; 406, arc-shaped pressing plate;

[0021] 500, auxiliary component; 501, fixing slot; 502, rotating shaft; 503, gear 2; 504, gear rod 2; 505, rolling wheel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1

[0024] See also Figure 1-Figure 4 An automatic paper feeding mechanism for a copier includes a paper feeding bin 100, a micro motor 200 being mounted on the side of the paper feeding bin 100, and a paper feeding roller 300 being connected to the side of the micro motor 200. When the micro motor 200 is started, the paper feeding roller 300 connected to the micro motor 200 is driven to rotate, thereby performing a corresponding paper feeding operation.

[0025] Inside the paper feed chamber 100, a pressure assembly 400 is installed. This assembly includes a hydraulic chamber 401. Gear 1 402 is connected to the outside of the paper feed roller 300 in a transmission manner. A rack 1 403 is slidably connected to the bottom of the hydraulic chamber 401. Gear 1 402 has only half of its teeth on its outside, allowing it to mesh with rack 1 403. During paper feeding, the paper feed roller 300 synchronously drives Gear 1 402, which is connected to it, to rotate clockwise, causing Gear 1 402 to move the meshed rack 1 403 upward. A spring 404 is fixedly connected to the top of rack 1 403. The end of the spring 404, away from rack 1 403, is located within the hydraulic chamber 401 and is fixedly connected to the inner wall of the hydraulic chamber 401. A push rod 405 is slidably connected to the end of the hydraulic chamber 401 away from rack 1 403. A curved pressure plate 406 is fixedly connected to the bottom of the push rod 405. When the side of the gear 1 402 without teeth rotates to the gear rod 1 403, the gear rod 1 403 loses its restriction and moves downward under the action of the spring 404 fixedly connected to it to reset. In this way, the gear rod 1 403 can move back and forth, and cooperate with the hydraulic magazine 401 slidingly connected to the gear rod 1 403 to drive the push rod 405 slidingly connected to the hydraulic magazine 401 to move back and forth in the vertical direction, so that the push rod 405 drives the arc-shaped pressing plate 406 fixedly connected to it to move back and forth, thereby pressing the paper on the top of the paper feed roller 300 to a certain extent, reducing the possibility of paper jams during transportation.

[0026] When in use, starting the micro motor 200 can drive the paper feed roller 300 connected to it to rotate to perform the corresponding paper feeding operation. The paper feed roller 300 synchronously drives the gear 1 402 connected to it to rotate clockwise, so that the gear 1 402 drives the rack 1 403 engaged with it to move upward. When the side of the outer side of the gear 1 402 without teeth rotates to the rack 1 403, the rack 1 403 loses its restriction and moves downward under the action of the spring 404 fixedly connected to it to reset. In this way, the rack 1 403 can be reciprocated, and the hydraulic magazine 401 slidably connected to the rack 1 403 can be driven to reciprocate the push rod 405 slidably connected to the hydraulic magazine 401 in the vertical direction. The push rod 405 drives the arc-shaped pressing plate 406 fixedly connected to it to move back and forth, thereby pressing the paper on the top of the paper feed roller 300 to a certain extent.

[0027] Example 2

[0028] See also Figure 1-Figure 4 Based on the first embodiment, an auxiliary assembly 500 is installed within the paper feed bin 100. The auxiliary assembly 500 includes a fixing slot 501, which is located within the curved pressure plate 406. A rotating shaft 502 is rotatably connected to the curved pressure plate 406. When the curved pressure plate 406 moves downward, the rotating shaft 502, which is rotatably connected to it, moves downward synchronously. A second gear 503 is fixedly connected to the side of the rotating shaft 502. A second gear rod 504 is fixedly connected to the inner wall of the paper feed bin 100. The second gear rod 504 is located to the side of the second gear 503 and is in meshing engagement with the second gear 503. When the rotating shaft 502 moves downward, it simultaneously drives the second gear 503, which is fixed to it, to move. Because the inner wall of the paper feed bin 100 is fixedly connected to the second gear 504, which meshes with the second gear 503, the second gear 503 rotates counterclockwise while moving downward, and the second gear 503 drives the rotating shaft 502, which is fixed to it, to rotate counterclockwise. The outer side of the rotating shaft 502 is fixedly connected to a roller 505. When the rotating shaft 502 rotates counterclockwise, it drives the multiple rollers 505 fixed to it to rotate counterclockwise, coordinating with the clockwise rotating paper feed roller 300 to perform the corresponding feeding operation, further improving the performance of the pressing assembly 400.

[0029] During use, based on Example 1, when the arc-shaped pressing plate 406 moves downward, the rotating shaft 502 rotatably connected thereto moves downward synchronously, and the rotating shaft 502 synchronously drives the gear 2 503 fixedly connected thereto to move. Because the inner wall of the paper feeding bin 100 is fixedly connected with the gear rod 2 504, and the gear rod 2 504 is engaged with the gear 2 503, the gear 2 503 rotates counterclockwise while moving downward, and the gear 2 503 drives the rotating shaft 502 fixedly connected thereto to rotate counterclockwise, so that the rotating shaft 502 drives the multiple rolling wheels 505 fixedly connected thereto to rotate counterclockwise, to cooperate with the clockwise rotating paper feeding roller 300 to perform corresponding conveying operations.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic paper feeding mechanism for a copier, comprising a paper feeding bin (100), a micro motor (200) mounted on a side of the paper feeding bin (100), and a paper feeding roller (300) connected to a side of the micro motor (200); Its characteristics are: A pressing assembly (400) is provided inside the paper feeding bin (100), and the pressing assembly (400) includes a hydraulic bin (401), the outer side of the paper feeding roller (300) is connected to a gear 1 (402) in a transmission manner, the bottom of the hydraulic bin (401) is slidably connected to a gear rod 1 (403), the top of the gear rod 1 (403) is fixedly connected to a spring (404), the end of the hydraulic bin (401) away from the gear rod 1 (403) is slidably connected to a push rod (405), and the bottom of the push rod (405) is fixedly connected to an arc-shaped pressing plate (406).

2. The automatic paper feeding mechanism for a copier according to claim 1, characterized in that: The outer side of the gear 1 (402) is provided with only half of the teeth, and the gear 1 (402) can be engaged with the gear rod 1 (403) through the teeth.

3. The automatic paper feeding mechanism for a copier according to claim 2, characterized in that: One end of the spring (404) away from the gear rod (403) is located in the hydraulic chamber (401) and is fixedly connected to the inner wall of the hydraulic chamber (401).

4. The automatic paper feeding mechanism for a copier according to claim 3, characterized in that: An auxiliary component (500) is provided inside the paper feeding bin (100), and the auxiliary component (500) includes a fixing groove (501). The interior of the arc-shaped pressing plate (406) is rotatably connected to a penetrating rotating shaft (502), a side of the rotating shaft (502) is fixedly connected to a second gear (503), an inner wall of the paper feeding bin (100) is fixedly connected to a second gear rod (504), and an outer side of the rotating shaft (502) is fixedly connected to a rolling wheel (505).

5. The automatic paper feeding mechanism for a copier according to claim 4, characterized in that: The fixing groove (501) is provided at an inner position of the arc-shaped pressing plate (406).

6. The automatic paper feeding mechanism for a copier according to claim 5, characterized in that: The second gear rod (504) is located on the side of the second gear (503), and the second gear rod (504) and the second gear (503) are in meshing state.

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