A paper feeding mechanism for a copying machine

Abstract

This utility model relates to the field of paper feed rollers for copiers, and discloses a paper feed roller for a copier's paper feeding mechanism. It includes a mounting plate, with two sets of positioning sleeves mounted on the lower surface of the mounting plate. Each of the two positioning sleeves has a moving rod inserted at its lower end, and a moving component is provided inside the positioning sleeve. A drive motor is mounted on the left side of the left moving rod. A rotating rod is inserted in the middle of each of the two sets of moving rods, and a roller is installed between the two sets of rotating rods. Each of the two moving components includes a supporting spring, which is fixedly installed inside the upper end of the positioning sleeve, and its lower end is connected to the moving rod. In this utility model, a torsion spring drives a gear to rotate, which, through the cooperation of the gear and rack, drives the gear to move within the positioning sleeve, thereby moving the moving rod at the lower end of the positioning sleeve. This ensures that the roller and anti-slip sleeve are always in contact with the paper, guaranteeing effective paper feeding.

Description

Technical Field

[0001] This utility model relates to the field of paper feed rollers for copiers, and in particular to a paper feed roller for the paper feeding mechanism of a copier. Background Technology

[0002] A photocopier is an office device used to copy documents and images. It scans the original and converts its information into a digital format, then prints it onto paper in a similar manner. Photocopiers typically offer high-speed, high-quality copying capabilities, can handle various paper sizes and types, and are widely used in offices, schools, and other places where document copying is required. Modern photocopiers not only have basic copying functions but can also perform printing, scanning, faxing, and other multi-functional operations, becoming an important part of office automation.

[0003] In the existing technology, the paper feed roller has a relatively simple structure. As the paper gradually decreases during use, it is difficult for the roller to effectively adhere to the lower part of the paper. Especially in paper trays or boxes, the lower part of the paper may be slightly offset or deformed due to gravity, making it difficult for the roller to fully contact and grip the paper. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a paper feed roller for a copier's paper feeding mechanism, aiming to improve the problem in the prior art where the paper feed roller structure is relatively simple, and the paper gradually decreases during use, making it difficult for the roller to achieve effective adhesion with the lower-positioned paper.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A paper feed roller for a copier includes a mounting plate. Two sets of positioning sleeves are mounted on the lower surface of the mounting plate, and a moving rod is inserted into the lower end of each of the two sets of positioning sleeves. A moving component is provided inside the positioning sleeve. A drive motor is mounted on the left side of the moving rod on the left side. A rotating rod is inserted into the middle position of each of the two sets of moving rods, and a roller is installed between the two sets of rotating rods.

[0007] By adopting the above technical solution, the mounting plate is installed in a suitable position, and then the moving component drives the moving rod and roller to move to the position where they are in contact with the paper. By turning on the drive motor, the roller rotates and the roller drives the paper to be fed into the copier.

[0008] Preferably, both sets of the moving components include a support spring, which is fixedly installed inside the upper part of the positioning sleeve, and the lower end of the support spring is connected to the moving rod.

[0009] Preferably, both sets of the moving components include two sets of gears, which are rotatably mounted on the front and rear sides of the upper end of the moving rod. Matching racks are provided on the front and rear sides inside the positioning sleeve, and torsion springs are installed opposite each other on the left end of the gears.

[0010] Preferably, the two sets of movable rods are movably inserted into the lower ends of the two sets of positioning sleeves.

[0011] Preferably, the outer side of the roller is fitted with an anti-slip sleeve.

[0012] Preferably, the anti-slip sleeve has inserts evenly arranged inside, and the roller surface has matching slots evenly opened.

[0013] Preferably, the anti-slip sleeve has multiple sets of anti-slip grooves evenly provided on the front side of its upper end, and each set of anti-slip grooves is provided with sharp teeth.

[0014] Preferably, a cleaning block is provided on the side of the lower end of both sets of moving rods that are close to each other.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, a movable component is provided, and a torsion spring drives the gear to rotate. Through the cooperation of the gear and the rack, the gear moves within the positioning sleeve, which in turn drives the movable rod to move at the lower end of the positioning sleeve. This ensures that the roller and the anti-slip sleeve are always in contact with the paper, thus guaranteeing the paper feeding effect.

[0017] 2. In this utility model, by providing an anti-slip sleeve, anti-slip grooves and sharp teeth, the distribution of the anti-slip grooves on the outer side of the anti-slip sleeve helps to distribute pressure more evenly and avoid excessive local friction or sliding. The design of the sharp teeth can effectively improve the contact friction with the paper, prevent the paper from slipping, and ensure the paper conveying effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a paper feed roller for a copier's paper feeding mechanism proposed in this utility model;

[0019] Figure 2 This is a partial structural diagram of the moving rod of the paper feed roller for a copier, as proposed in this utility model.

[0020] Figure 3 This is a partial structural diagram of the support spring for the paper feed roller of a copier, as proposed in this utility model.

[0021] Figure 4 This is a partial structural diagram of the rack and pinion of the paper feed roller for a copier, as proposed in this utility model.

[0022] Figure 5This is a partial structural diagram of an anti-slip sleeve for a paper feed roller in a copier, as proposed in this utility model.

[0023] Legend:

[0024] 1. Mounting plate; 2. Positioning sleeve; 3. Moving rod; 4. Moving assembly; 401. Support spring; 402. Gear; 403. Rack; 404. Torsion spring; 5. Drive motor; 6. Rotating rod; 7. Roller; 8. Anti-slip sleeve; 9. Insert; 10. Slot; 11. Anti-slip groove; 12. Teeth; 13. Cleaning block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Reference Figure 1 and Figure 2 An embodiment of this utility model provides a paper feed roller for a copier's paper feeding mechanism, including a mounting plate 1. Two sets of positioning sleeves 2 are mounted on the lower surface of the mounting plate 1, and a moving rod 3 is inserted into the lower end of each of the two sets of positioning sleeves 2. A moving component 4 is provided inside the positioning sleeve 2. A drive motor 5 is mounted on the left side of the left moving rod 3. A rotating rod 6 is inserted in the middle of each of the two sets of moving rods 3, and a roller 7 is installed between the two sets of rotating rods 6.

[0028] Specifically, by installing the mounting plate 1 in a suitable position, the moving component 4 drives the moving rod 3 and the roller 7 to move to the position where they are in contact with the paper. By turning on the drive motor 5, the roller 7 is driven to rotate, and the roller 7 drives the paper to be fed into the copier.

[0029] Reference Figure 3 Both sets of moving components 4 include a support spring 401, which is fixedly installed inside the upper part of the positioning sleeve 2, and the lower end of the support spring 401 is connected to the moving rod 3.

[0030] Specifically, the support spring 401 can provide a certain elastic support, apply a certain pressure to the moving rod 3, thereby driving the moving rod 3 and the roller 7 to move, so that the roller 7 always remains in contact with the paper.

[0031] Reference Figure 2 Two sets of movable rods 3 are respectively movably inserted into the lower ends of two sets of positioning sleeves 2;

[0032] Specifically, the position of the moving rod 3 can be adjusted at the lower end of the positioning sleeve 2, thereby driving the roller 7 to adhere to the paper.

[0033] Reference Figure 5 The outer side of the roller 7 is covered with an anti-slip sleeve 8. The anti-slip sleeve 8 is evenly provided with insert strips 9 inside, and the surface of the roller 7 is evenly provided with matching slots 10. Multiple sets of anti-slip grooves 11 are evenly provided on the front side of the upper end of the anti-slip sleeve 8, and each set of anti-slip grooves 11 is provided with sharp teeth 12 inside.

[0034] Specifically, the anti-slip sleeve 8 increases friction to ensure that the paper does not slip during the feeding process, providing more precise paper control. The slot 10 and the insert 9 on the anti-slip sleeve 8 facilitate the installation of the anti-slip sleeve 8 and ensure that the anti-slip sleeve 8 does not become loose. The distribution of the anti-slip grooves 11 helps to distribute pressure more evenly and avoid excessive local friction or slippage. The design of the sharp teeth 12 can effectively improve the contact friction with the paper and prevent the paper from slipping.

[0035] Reference Figure 2 Cleaning blocks 13 are provided on the side of the lower end of the two sets of moving rods 3 that are close to each other;

[0036] Specifically, the cleaning block 13 can effectively remove paper scraps, dust or other impurities that may accumulate during the operation of the roller 7.

[0037] Example 2:

[0038] Reference Figure 4 Both sets of moving components 4 include two sets of gears 402. The two sets of gears 402 are rotatably mounted on the front and rear sides of the upper end of the moving rod 3. The positioning sleeve 2 has matching racks 403 on the front and rear sides inside. A torsion spring 404 is installed opposite to the left end of the gear 402.

[0039] Specifically, the torsion spring 404 drives the gear 402 to rotate, and through the cooperation of the gear 402 and the rack 403, the gear 402 moves within the positioning sleeve 2, which in turn drives the moving rod 3 to move at the lower end of the positioning sleeve 2, so that the roller 7 always contacts the paper and ensures the paper feeding effect.

[0040] Working principle: By installing the mounting plate 1 in a suitable position, the moving component 4 drives the moving rod 3 to move at the lower end of the positioning sleeve 2, thereby causing the anti-slip sleeve 8 on the outside of the roller 7 to contact the paper. Then, the drive motor 5 is turned on, and the rotating rod 6 drives the roller 7 and the anti-slip sleeve 8 to rotate. The anti-slip groove 11 and sharp teeth 12 on the outside of the anti-slip sleeve 8 drive the paper into the copier.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paper feed roller for a copier's paper feeding mechanism, comprising a mounting plate (1), characterized in that: Two sets of positioning sleeves (2) are installed on the lower surface of the mounting plate (1), and a moving rod (3) is inserted into the lower end of each of the two sets of positioning sleeves (2). A moving component (4) is provided inside the positioning sleeve (2). A drive motor (5) is installed on the left side of the moving rod (3). A rotating rod (6) is inserted in the middle of each of the two sets of moving rods (3), and a roller (7) is installed between the two sets of rotating rods (6).

2. The paper feed roller for a copier's paper feeding mechanism according to claim 1, characterized in that: Both sets of the moving components (4) include a support spring (401), which is fixedly installed inside the upper end of the positioning sleeve (2), and the lower end of the support spring (401) is connected to the moving rod (3).

3. The paper feed roller for a copier's paper feeding mechanism according to claim 1, characterized in that: Both sets of the moving components (4) include two sets of gears (402). The two sets of gears (402) are rotatably mounted on the front and rear sides of the upper end of the moving rod (3), and the front and rear sides of the positioning sleeve (2) are provided with matching racks (403), and the left end of the gears (402) is equipped with torsion springs (404).

4. The paper feed roller for a copier's paper feeding mechanism according to claim 1, characterized in that: The two sets of movable rods (3) are respectively movably inserted into the lower ends of the two sets of positioning sleeves (2).

5. The paper feed roller for a copier's paper feeding mechanism according to claim 1, characterized in that: The roller (7) is fitted with an anti-slip sleeve (8) on its outer side.

6. The paper feed roller for a copier's paper feeding mechanism according to claim 5, characterized in that: The anti-slip sleeve (8) has inserts (9) evenly arranged inside, and the roller (7) has matching slots (10) evenly opened on its surface.

7. The paper feed roller for a copier's paper feeding mechanism according to claim 5, characterized in that: The anti-slip sleeve (8) has multiple anti-slip grooves (11) evenly provided on the front side of the upper end, and each anti-slip groove (11) has sharp teeth (12) inside.

8. The paper feed roller for a copier's paper feeding mechanism according to claim 5, characterized in that: Cleaning blocks (13) are provided on the side of the lower end of the two sets of moving rods (3) that are close to each other.

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