Paper feeding positioning structure of copying machine

Abstract

The utility model provides a copying machine paper feeding positioning structure, which relates to the field of paper feeding positioning structures and comprises a transmission device, sliding plates are arranged at two ends of the transmission device, the bottoms of the sliding plates are slidably arranged in guide rails, the guide rails are fixedly mounted in a paper feeding box, and a mounting frame is fixedly mounted on one side of each sliding plate. A plurality of rollers are rotationally connected to the mounting frame, elastic pieces are arranged in grooves formed in the two ends of the sliding plate, baffles are arranged on the two sides of the mounting frame, and when the elastic pieces are pressed, the elastic pieces drive the baffles to move through connecting devices, and the side walls of the baffles are flush with one ends of the rollers; according to the paper feeding positioning structure of the copying machine provided by the utility model, through the arrangement of the movable baffle, the baffle is not attached to paper in the paper feeding process, at the moment, the rollers are attached to the side wall of the paper, so that the friction force borne by the paper in the paper feeding process is reduced to a certain extent, and the abrasion at the edge of the paper is further reduced.

Description

Technical Field

[0001] The utility model relates to the field of paper feeding and positioning structures, in particular to a paper feeding and positioning structure for a copier. Background Art

[0002] A copier is an office device used for quickly copying documents and images. Through optical scanning and electrostatic copying technologies, it can copy paper documents or images into multiple copies. Copiers are widely used in offices, schools, government agencies, commercial printing, and other fields, greatly improving the efficiency of document processing.

[0003] When using a copier, it is necessary to first place the paper in the paper feed tray. The specific operation steps are as follows: open the paper feed tray, place the paper on the backing plate, adjust the baffles on both sides of the paper. Through the transmission structure of gears and racks, when one baffle is moved, the baffle on the opposite side also moves accordingly, thus moving the paper to the middle position of the friction wheel. The two baffles play a role in positioning the paper, making it difficult for the paper to shift during the paper feeding stage. After placement, the paper feeding operation of the paper is realized through the rotation of the friction wheel. In the entire paper feeding process, since the paper constantly contacts the side walls of the baffles during paper feeding, it may cause a certain degree of wear to the edges of the paper, and due to the friction between the paper and the baffles, to a certain extent, it affects the transportation of the paper.

[0004] Therefore, it is necessary to provide a new paper feeding and positioning structure for a copier to solve the above technical problems. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a paper feeding and positioning structure for a copier.

[0006] The paper feeding and positioning structure for a copier provided by the utility model is installed in the paper feed tray of the copier body and includes a transmission device. Both ends of the transmission device are provided with sliding plates. The bottom of the sliding plate is slidably arranged in a guide rail, and the guide rail is fixedly installed in the paper feed tray. One side of the sliding plate is fixedly installed with a mounting frame, and a plurality of rollers are rotatably connected to the mounting frame. Elastic members are arranged in the grooves opened at both ends of the sliding plate. Baffles are arranged on both sides of the mounting frame. When the elastic member is pressed, the elastic member drives the baffle to move through a connecting device, and the side wall of the baffle is flush with one end of a plurality of rollers.

[0007] Preferably, the transmission device includes a gear and two racks. The gear is rotatably connected in the paper feed tray. The two racks are respectively arranged on both sides of the gear, and both racks are engaged with the gear. One end of each of the two racks is fixedly connected with a connecting plate, and the two connecting plates are respectively fixedly connected with the two sliding plates.

[0008] Preferably, the elastic member includes a pressing plate, a first spring, and a limiting rod. The pressing plate is movably disposed in the groove of the sliding plate. A limiting rod is fixedly connected to the side wall of the pressing plate. The limiting rod movably penetrates through a through hole formed in the inner wall of the groove of the sliding plate. Two ends of the first spring are respectively fixedly connected to the side wall of the pressing plate and the bottom wall of the groove of the sliding plate.

[0009] Preferably, the connecting device includes a driving plate, a driven plate, and a movable assembly. One end of the driving plate is fixedly connected to the side wall of the pressing plate. One end of the driving plate is provided as an inclined surface. One end of the driven plate is fixedly connected to the side wall of the baffle. One end of the driven plate is provided as an inclined surface. The movable assembly is mounted on the mounting frame.

[0010] Preferably, the inclined surface of the driving plate is in contact with the inclined surface of the driven plate.

[0011] Preferably, the movable assembly includes a fixing frame and two movable members. The fixing frame has a U-shaped structure. The side wall of the fixing frame is fixedly connected to the side wall of the mounting frame. The two movable members are respectively disposed at two ends of the fixing frame, and both of the two movable members are fixedly connected to the baffle.

[0012] Preferably, the movable member includes a plug rod and a second spring. One end of the plug rod is fixedly connected to the baffle. The plug rod movably penetrates through a through hole formed in the fixing frame. The second spring is movably sleeved on the plug rod. Two ends of the second spring are respectively fixedly connected to the side wall of the baffle and the side wall of the fixing frame.

[0013] Preferably, when the pressing plate is not pressed, the first spring is in a compressed state, and there is an interaction force between the end of the limiting rod and the side wall of the guide rail.

[0014] Compared with the related art, the paper feeding and positioning structure of the photocopier provided by the present invention has the following beneficial effects:

[0015] Press the pressing plate, and the limiting rod moves into the groove of the sliding plate. At the same time, the pressing plate drives the driving plate to move towards the sliding plate. Therefore, under the action of the driving plate, the baffle moves away from the sliding plate, and the side wall of the baffle is flush with one end of a plurality of rollers. Then, move the sliding plate. Due to the action of the transmission device, the other sliding plate also moves accordingly. Through the extrusion between the side wall of the baffle and the side wall of the paper, the positioning of the paper is realized. After the positioning of the paper is completed, release the pressing plate, and the driving plate moves away from the sliding plate. The stretched second spring drives the baffle to move away from the paper, so that the baffle does not fit the paper. At this time, a plurality of rollers are in contact with the side wall of the paper. To a certain extent, the friction force on the paper during the paper feeding process is reduced, and thus the wear at the edge of the paper is reduced. Description of the Drawings

[0016] Figure 1 Structural schematic diagram of the paper feeding and positioning structure of the photocopier provided by the present utility model;

[0017] Figure 2 For Figure 1 Partial structural schematic diagram of the structure shown;

[0018] Figure 3 For Figure 2 Partial top-view structural schematic diagram of the structure shown;

[0019] Figure 4 For Figure 2 Partial structural schematic diagram of the structure shown;

[0020] Figure 5 For Figure 4 Structural schematic diagram of the structure shown from another angle;

[0021] Figure 6 For Figure 2 Cross-sectional structural schematic diagram of the guide rail, sliding plate and elastic member shown.

[0022] Reference numerals in the figure: 1, photocopier body; 2, paper feed tray; 3, guide rail; 4, sliding plate; 5, mounting bracket; 6, roller; 7, baffle; 8, gear; 9, rack; 10, connecting plate; 11, pressing plate; 12, first spring; 13, limiting rod; 14, driving plate; 15, driven plate; 16, fixing bracket; 17, inserting rod; 18, second spring; 19, backing plate; 20, friction wheel. Specific implementation mode

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figures 1-6 , wherein, Figure 1 Structural schematic diagram of the paper feeding and positioning structure of the photocopier provided by the present utility model; Figure 2 For Figure 1 Partial structural schematic diagram of the structure shown; Figure 3 For Figure 2 Partial top-view structural schematic diagram of the structure shown; Figure 4 For Figure 2 Partial structural schematic diagram of the structure shown; Figure 5 For Figure 4 Structural schematic diagram of the structure shown from another angle; Figure 6 For Figure 2 Cross-sectional structural schematic diagram of the guide rail, sliding plate and elastic member shown.

[0025] In the specific implementation process, such as Figures 1-6As shown, this structure is installed in the paper feed tray 2 of the copier body 1, and includes a transmission device. Sliding plates 4 are arranged at both ends of the transmission device. The bottom of the sliding plate 4 is slidably arranged in the guide rail 3, and the guide rail 3 is fixedly installed in the paper feed tray 2. An installation frame 5 is fixedly installed on one side of the sliding plate 4. A plurality of rollers 6 are rotatably connected to the installation frame 5. Elastic members are arranged in the grooves opened at both ends of the sliding plate 4. Baffles 7 are arranged on both sides of the installation frame 5. When the elastic member is pressed, the elastic member drives the baffle 7 to move through the connecting device, and makes the side wall of the baffle 7 flush with one end of the plurality of rollers 6. After the positioning of the paper is completed, the baffle 7 is not in contact with the paper through the elastic member and the connecting device. At this time, the plurality of rollers 6 are in contact with the side wall of the paper, which reduces the friction force suffered by the paper during the paper feeding process to a certain extent, and thus reduces the wear at the edge of the paper;

[0026] The transmission device includes a gear 8 and two racks 9. The gear 8 is rotatably connected in the paper feed tray 2. The two racks 9 are respectively arranged on both sides of the gear 8, and both racks 9 are engaged with the gear 8. One end of each of the two racks 9 is fixedly connected to a connecting plate 10, and the two connecting plates 10 are respectively fixedly connected to the two sliding plates 4. When the sliding plate 4 moves, the rack 9 is driven to move through the connecting plate 10, and the rack 9 drives the other rack 9 to move through the gear 8, so as to realize the function that when one side of the sliding plate 4 moves, the other side of the sliding plate 4 also moves accordingly. Through the extrusion between the side wall of the baffle 7 and the side wall of the paper, the positioning of the paper is realized;

[0027] The elastic member includes a pressing plate 11, a first spring 12 and a limiting rod 13. The pressing plate 11 is movably arranged in the groove of the sliding plate 4. A limiting rod 13 is fixedly connected to the side wall of the pressing plate 11. The limiting rod 13 is movably inserted into the through hole opened on the inner wall of the groove of the sliding plate 4. The two ends of the first spring 12 are respectively fixedly connected to the side wall of the pressing plate 11 and the bottom wall of the groove of the sliding plate 4. When the pressing plate 11 is not pressed, the first spring 12 is in a compressed state, and there is an interaction force between the end of the limiting rod 13 and the side wall of the guide rail 3 to press the pressing plate 11. When the pressing plate 11 is pressed, the compressed first spring 12 is further compressed, and the limiting rod 13 moves into the groove of the sliding plate 4, so that the sliding plate 4 can slide on the guide rail 3;

[0028] The connecting device includes a driving plate 14, a driven plate 15 and a movable assembly. One end of the driving plate 14 is fixedly connected to the side wall of the pressing plate 11. One end of the driving plate 14 is provided as an inclined surface. One end of the driven plate 15 is fixedly connected to the side wall of the baffle 7. One end of the driven plate 15 is provided as an inclined surface. The movable assembly is installed on the mounting frame 5. The inclined surface of the driving plate 14 is in contact with the inclined surface of the driven plate 15. The movable assembly includes a fixing frame 16 and two movable parts. The fixing frame 16 has a U-shaped structure. The side wall of the fixing frame 16 is fixedly connected to the side wall of the mounting frame 5. The two movable parts are respectively arranged at both ends of the fixing frame 16, and both movable parts are fixedly connected to the baffle 7. The movable part includes a plug rod 17 and a second spring 18. One end of the plug rod 17 is fixedly connected to the baffle 7. The plug rod 17 is movably inserted into the through hole formed in the fixing frame 16. The second spring 18 is movably sleeved on the plug rod 17. The two ends of the second spring 18 are respectively fixedly connected to the side wall of the baffle 7 and the side wall of the fixing frame 16. When the pressing plate 11 moves, the pressing plate 11 drives the driving plate 14 to move towards the sliding plate 4. Since the inclined surface of the pressing plate 11 is in contact with the inclined surface of the driven plate 15, under the action of the driving plate 14, the baffle 7 moves away from the sliding plate 4, and the side wall of the baffle 7 is flush with one end of a plurality of rollers 6.

[0029] The working principle provided by the present utility model is as follows: When using the device, place the paper on the backing plate 19. Then, press the pressing plate 11. When the pressing plate 11 is pressed, the compressed first spring 12 is further compressed, and the limiting rod 13 moves into the groove of the sliding plate 4. At the same time, when the pressing plate 11 moves, the pressing plate 11 drives the driving plate 14 to move towards the sliding plate 4. Since the inclined surface of the pressing plate 11 is in contact with the inclined surface of the driven plate 15, under the action of the driving plate 14, the baffle 7 moves away from the sliding plate 4, and the side wall of the baffle 7 is flush with one end of the plurality of rollers 6. Then, move the sliding plate 4. When the sliding plate 4 moves, it drives the rack 9 to move through the connecting plate 10. The rack 9 drives another rack 9 through the gear 8, so as to realize the movement of one side of the sliding plate 4, and the sliding plate 4 on the other side also moves accordingly. Through the extrusion between the side wall of the baffle 7 and the side wall of the paper, the positioning of the paper is realized. After the positioning of the paper is completed, release the pressing plate 11. The compressed first spring 12 releases elastic force, so that the end of the limiting rod 13 generates an interaction force with the guide rail 3, which plays a role in limiting the sliding plate 4. And when the pressing plate 11 is released, the driving plate 14 moves away from the sliding plate 4, and the stretched second spring 18 drives the baffle 7 to move away from the paper, so that the baffle 7 is not in contact with the paper. At this time, the plurality of rollers 6 are in contact with the side wall of the paper, and the backing plate 19 moves upward, and the paper feeding operation is realized through the rotation of the friction wheel 20. Regarding how the backing plate 19 moves upward and the driving member for driving the friction wheel 20 to rotate are prior arts and are not detailed in the drawings. To a certain extent, the friction force suffered by the paper during the paper feeding process is reduced, and thus the wear at the edge of the paper is reduced.

[0030] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0031] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A paper feeding positioning structure for a copier, the structure being installed in a paper feeding box (2) in a copier body (1), characterized in that: The invention comprises a transmission device, wherein both ends of the transmission device are provided with a slide plate (4), the bottom of the slide plate (4) is slidably arranged in a guide rail (3), the guide rail (3) is fixedly installed in a paper feeding box (2), a mounting frame (5) is fixedly installed on one side of the slide plate (4), a plurality of rollers (6) are rotatably connected to the mounting frame (5), elastic members are arranged in grooves opened at both ends of the slide plate (4), baffles (7) are arranged on both sides of the mounting frame (5), and when the elastic member is pressed, the elastic member drives the baffle (7) to move through the connecting device, and makes the side wall of the baffle (7) flush with one end of the plurality of rollers (6).

2. The paper feeding positioning structure of a copier according to claim 1, characterized in that: The transmission device comprises a gear (8) and two racks (9); the gear (8) is rotatably connected to the paper feeding box (2); the two racks (9) are respectively arranged on both sides of the gear (8); and the two racks (9) are meshed with the gear (8); one end of the two racks (9) is fixedly connected to a connecting plate (10); and the two connecting plates (10) are respectively fixedly connected to the two slide plates (4).

3. The paper feeding positioning structure of a copier according to claim 2, characterized in that: The elastic member comprises a pressing plate (11), a first spring (12) and a limiting rod (13); the pressing plate (11) is movably arranged in the groove of the slide plate (4); the limiting rod (13) is fixedly connected to the side wall of the pressing plate (11); the limiting rod (13) is movably inserted into a through hole starting from the inner wall of the groove of the slide plate (4); and the two ends of the first spring (12) are respectively fixedly connected to the side wall of the pressing plate (11) and the bottom wall of the groove of the slide plate (4).

4. The paper feeding positioning structure of a copier according to claim 3, characterized in that: The connecting device comprises a driving plate (14), a driven plate (15) and a movable component, wherein one end of the driving plate (14) is fixedly connected to the side wall of the pressing plate (11), and one end of the driving plate (14) is arranged as an inclined surface, one end of the driven plate (15) is fixedly connected to the side wall of the baffle (7), and one end of the driven plate (15) is arranged as an inclined surface, and the movable component is mounted on the mounting frame (5).

5. The paper feeding positioning structure of a copier according to claim 4, characterized in that: The inclined surface of the driving plate (14) is in contact with the inclined surface of the driven plate (15).

6. The paper feeding positioning structure of a copier according to claim 5, characterized in that: The movable assembly comprises a fixed frame (16) and two movable parts. The fixed frame (16) is in a U-shaped structure. The side wall of the fixed frame (16) is fixedly connected to the side wall of the mounting frame (5). The two movable parts are respectively arranged at two ends of the fixed frame (16), and the two movable parts are fixedly connected to the baffle (7).

7. The paper feeding positioning structure of a copier according to claim 6, characterized in that: The movable part comprises an insertion rod (17) and a second spring (18), one end of the insertion rod (17) is fixedly connected to the baffle (7), the insertion rod (17) is movably inserted into a through hole provided in the fixing frame (16), the second spring (18) is movably sleeved on the insertion rod (17), and the two ends of the second spring (18) are respectively fixedly connected to the side wall of the baffle (7) and the side wall of the fixing frame (16).

8. The paper feeding positioning structure of a copier according to claim 7, characterized in that: When the pressing plate (11) is not pressing, the first spring (12) is in a compressed state, and the end of the limiting rod (13) and the side wall of the guide rail (3) have a mutual force.

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