Paper feeding mechanism for printer

Abstract

The utility model discloses a paper feeding mechanism for a printer, which comprises two groups of fixed boxes which are respectively arranged in the printer and are positioned on two sides, any group of fixed boxes is provided with a plug-in notch, a drawing box for placing printing paper is arranged between the two groups of fixed boxes, an inclined supporting plate is arranged in the drawing box, and the inclined supporting plate is connected with the plug-in notch. A paper outlet base located in the printer is arranged above the drawing box. The paper delivery assembly is arranged in the drawing box, is matched with the paper delivery seat and comprises a fixed seat arranged in the drawing box, and the paper feeding mechanism for the printer solves the problem that multiple pieces of paper are easy to synchronize due to friction force between the pieces of paper originally, so that the paper on the uppermost layer enters a printing mechanism, and the paper on the uppermost layer cannot be separated from the fixed seat after the paper on the uppermost layer enters the printing mechanism. And paper on the lower layer is driven to generate wrinkles or is directly clamped at a paper feeding mechanism, so that time and labor are wasted in subsequent treatment.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, specifically to a paper feeding mechanism for a printer. Background Technology

[0002] A printer is one of the output devices of a computer, used to print the results of computer processing onto relevant media. There are three indicators for measuring the quality of a printer: print resolution, print speed, and noise. There are many types of printers. According to whether the printing element strikes the paper, they are divided into impact printers and non-impact printers. According to the structure of the printed characters, they are divided into full-character printers and dot matrix character printers. According to how a line of text is formed on the paper, they are divided into serial printers and line printers. According to the technology used, they are divided into column printers, ball printers, inkjet printers, thermal printers, laser printers, electrostatic printers, magnetic printers, LED printers, etc.

[0003] Currently, printer paper feeders mainly consist of a storage unit, a pull-out unit, a slant plate, a paper feed drum (made of rubber), and a paper separating unit. When the pull-out unit is placed inside the storage unit, the slant plate in the pull-out unit lifts the paper, and then the paper feed drum rotates and contacts the paper. The friction between the paper feed drum and the paper drives the paper through the paper output port in the storage unit, allowing the paper to enter the subsequent printing mechanism. However, the friction between the papers can easily cause multiple sheets to be fed simultaneously. This can lead to the top sheet of paper entering the printing mechanism causing the lower sheets to wrinkle or get stuck in the paper feed mechanism, resulting in time-consuming and labor-intensive subsequent processing. Therefore, we propose a new paper feed mechanism for printers. Utility Model Content

[0004] The purpose of this invention is to provide a paper feeding mechanism for a printer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a paper feeding mechanism for a printer, comprising two sets of fixed boxes respectively disposed inside the printer and located on both sides, each set of fixed boxes having an insertion slot, and a pull-out box for placing printing paper is disposed between the two sets of fixed boxes, the pull-out box having a slanted support plate, and a paper output seat located inside the printer being disposed above the pull-out box; a paper output assembly, the paper output assembly being disposed in the pull-out box and cooperating with the paper output seat, comprising a fixed seat disposed in the pull-out box, the fixed seat having multiple sets of storage slots, and a lifting shaft being rotatably connected to the fixed seat, the lifting shaft being fixedly connected to multiple sets of lifting sleeves respectively located in the storage slots; and a power assembly, the power assembly being disposed in the fixed box and connected to the paper output assembly, which solves the problem that the friction between the papers easily leads to multiple sheets of paper being synchronized, resulting in the top sheet of paper entering the printing mechanism and causing the lower sheets of paper to wrinkle or directly jam at the paper feeding mechanism, thus leading to time-consuming and laborious subsequent processing.

[0006] Preferably, the paper output assembly includes an inclined plate disposed on the fixed base and located in the middle section, an interceptor is disposed on the inclined plate, and a paper feed roller is disposed above the inclined plate on the paper output base. The paper feed roller is fixedly connected to a paper output shaft rotatably connected to the paper output base. The feed end of the paper output base is provided with a mating roller rotatably connected to the fixed box, and the paper output shaft is connected to a mating mechanism disposed in the fixed box.

[0007] Preferably, the mating mechanism includes a rotating shaft disposed in and rotatably connected to the fixed box, a pulley assembly for transmission is provided between the rotating shaft and the paper output shaft, and an incomplete gear is fixedly connected to the rotating shaft. An insertion plate adapted to the insertion slot is fixedly connected to the side of the pull-out box, and a first gear fixedly connected to the lifting shaft is rotatably connected to the insertion plate. The incomplete gear meshes with the first gear.

[0008] Preferably, the power assembly includes an electric motor disposed in and fixedly connected to the fixed box. The electric motor and the rotating shaft are located in the same fixed box. The output end of the electric motor is fixedly connected to a power shaft. A rectangular groove is provided at the end of the power shaft away from the electric motor. A first bevel gear is fixedly connected to the power shaft. A second bevel gear that meshes with the first bevel gear is fixedly connected to the rotating shaft. The pull-out box has mating parts on both sides that are adapted to the positions of the two sets of fixed boxes.

[0009] Preferably, the docking component includes two sets of fixing blocks respectively disposed on both sides of the pull-out box and fixedly connected thereto. A rectangular shaft is rotatably connected to the fixing block near the power shaft. The end of the rectangular shaft is set to be tapered and adapted to the rectangular groove. A docking rod is fixedly connected to the other set of fixing blocks. A docking cylinder adapted to the docking rod is fixedly connected to the fixing box, which is beneficial to make the connection more stable during operation.

[0010] Preferably, the interceptor includes a rubber block disposed above the inclined plate, an mounting plate disposed below the inclined plate, a flexible sheet adapted to the side of the inclined plate disposed between the rubber block and the mounting plate, and an mounting shaft that passes through the inclined plate and is opposite to the mounting plate is fixedly connected to the rubber block.

[0011] Preferably, the lifting sleeve is symmetrically arranged on the lifting shaft, which helps to prevent the paper from tilting when the lower layer of paper is pushed back, thus affecting the subsequent paper output position.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention solves the problem that friction between papers can easily cause multiple sheets to move synchronously, resulting in the top sheet entering the printing mechanism and causing the lower sheets to wrinkle or get stuck at the paper feed mechanism, leading to time-consuming and laborious subsequent processing. Through the cooperation of the paper output assembly and the power assembly, the paper output assembly is first installed on the printer, at which point the paper output assembly and the power assembly are connected. Then, by operating the power assembly, the paper output assembly is driven to operate. When the top of the printing paper enters between the feed drum and the cooperating roller, additional power is provided to the top sheet, allowing it to quickly enter the paper output holder and separate from the lower sheets, preventing paper jams. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram showing the overall structure of this utility model.

[0016] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0017] Figure 4 This is a schematic diagram showing the fit between the fixing base and the pull-out box structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the fixing box of this utility model;

[0019] Figure 6for Figure 5 Enlarged view of region B in the middle;

[0020] Figure 7 This is a schematic diagram showing the structural cooperation between the paper output component and the power component of this utility model;

[0021] Figure 8 This is a schematic diagram of the mating structure of the docking parts of this utility model;

[0022] Figure 9 This is a schematic diagram of the interceptor structure of this utility model.

[0023] In the diagram: 1. Fixed box; 2. Insertion slot; 3. Pull-out box; 4. Diagonal brace; 5. Paper output holder; 6. Paper output assembly; 7. Fixed seat; 8. Storage slot; 9. Lifting shaft; 10. Lifting sleeve; 11. Power assembly; 12. Inclined plate; 13. Interceptor; 14. Paper feed roller; 15. Paper output shaft; 16. Matching roller; 17. Matching mechanism; 18. Rotating shaft; 19. Pulley assembly; 20. Incomplete gear; 21. Insertion plate; 22. First gear; 23. Motor; 24. Power shaft; 25. Rectangular slot; 26. First bevel gear; 27. Second bevel gear; 28. Connecting piece; 29. ​​Fixed block; 30. Rectangular shaft; 31. Connecting rod; 32. Connecting cylinder; 33. Rubber block; 34. Mounting plate; 35. Flexible sheet; 36. Mounting shaft. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please see Figure 1-9This utility model provides a technical solution: a paper feeding mechanism for a printer, including two sets of fixed boxes 1 respectively disposed inside the printer and located on both sides, each set of fixed boxes 1 having an insertion slot 2, and a pull-out box 3 for placing printing paper is disposed between the two sets of fixed boxes 1, the pull-out box 3 having a diagonal support plate 4, and a paper output seat 5 located inside the printer above the pull-out box 3; a paper output assembly 6, disposed in the pull-out box 3 and cooperating with the paper output seat 5, including a fixed seat 7 disposed in the pull-out box 3, the fixed seat 7 having multiple sets of storage slots 8, and a lifting shaft 9 rotatably connected to the fixed seat 7, the lifting shaft 9 having multiple sets of lifting sleeves 10 respectively located in the storage slots 8; a power assembly 11, the power assembly 11 disposed in the fixed box 1 and connected to the paper output assembly 6, in addition, in order to prevent tilting when pushing the lower layer of paper back, the lifting sleeves 10 are symmetrically arranged on the lifting shaft 9.

[0027] Furthermore, the paper output assembly 6 includes an inclined plate 12 disposed on the fixed base 7 and located in the middle section. An interceptor 13 is disposed on the inclined plate 12, and a paper feed roller 14 is disposed above the inclined plate 12 on the paper output seat 5. The paper feed roller 14 is fixedly connected to an output shaft 15 rotatably connected to the paper output seat 5. A mating roller 16 rotatably connected to the fixed box 1 is disposed at the feed end of the paper output seat 5. The output shaft 15 is connected to a mating mechanism 17 disposed in the fixed box 1. The mating mechanism 17 includes a rotating shaft 18 disposed in and rotatably connected to the fixed box 1. A pulley set 19 for transmission is disposed between the rotating shaft 18 and the output shaft 15. An incomplete gear 20 is fixedly connected to the rotating shaft 18. A plug-in plate 21 adapted to the plug-in slot 2 is fixedly connected to the side of the pull-out box 3. A first gear 22 fixedly connected to the lifting shaft 9 is rotatably connected to the plug-in plate 21. The incomplete gear 20 and the first gear 22 mesh with each other. The interceptor 13 includes a rubber block 33 disposed above the inclined plate 12. A mounting plate 34 is disposed below the inclined plate 12. A flexible sheet 35 adapted to the side of the inclined plate 12 is disposed between the rubber block 33 and the mounting plate 34. A mounting shaft 36 that penetrates the inclined plate 12 and is opposite to the mounting plate 34 is fixedly connected to the rubber block 33.

[0028] like Figures 2-3 as well as Figures 5-8As shown, the power assembly 11 includes a motor 23 disposed in and fixedly connected to the fixed box 1. The motor 23 and the rotating shaft 18 are located in the same fixed box 1. The output end of the motor 23 is fixedly connected to a power shaft 24. A rectangular groove 25 is provided at the end of the power shaft 24 away from the motor 23. A first bevel gear 26 is fixedly connected to the power shaft 24. A second bevel gear 27 that meshes with the first bevel gear 26 is fixedly connected to the rotating shaft 18. The pull-out box 3 is provided with docking parts 28 on both sides that are adapted to the positions of the two sets of fixed boxes 1. The docking parts 28 include two sets of fixing blocks 29 respectively disposed on both sides of the pull-out box 3 and fixedly connected to it. A rectangular shaft 30 is rotatably connected to the fixing block 29 near the power shaft 24. The end of the rectangular shaft 30 is tapered and adapted to the rectangular groove 25. A docking rod 31 is fixedly connected to the other set of fixing blocks 29. A docking cylinder 32 that is adapted to the docking rod 31 is fixedly connected to the fixed box 1.

[0029] In a specific implementation, the printing paper is placed into the pull-out box 3 and the pull-out box 3 is inserted into the printer. When inserted, the fixing blocks 29 on both sides of the pull-out box 3 correspond to the positions of the power shaft 24 and the docking cylinder 32, respectively. The rectangular shaft 30 is inserted into the rectangular groove 25 on the power shaft 24. The tapered end of the rectangular shaft 30 facilitates its insertion into the rectangular groove 25. The docking rod 31 on the other set of fixing blocks 29 is inserted into the docking cylinder 32. The insertion plate 21 on the side of the pull-out box 3 moves inward along the insertion slot 2 until the insertion plate 21 is fully inserted into the insertion slot 2. At this time, the pull-out box 3 is installed.

[0030] Then, the motor 23 is operated. The motor 23 drives the power shaft 24 to rotate through the output end. The first bevel gear 26 on the power shaft 24 rotates accordingly. The first bevel gear 26 meshes with the second bevel gear 27, which is driven to rotate. The second bevel gear 27 then drives the rotating shaft 18 to rotate in the fixed box 1. Through the transmission connection of the pulley group 19, the rotating shaft 18 further drives the paper output shaft 15 to rotate when it rotates. The paper feed roller 14 on the paper output shaft 15 then rotates. Through friction, the printing paper in the pull-out box 3 is moved. The printing paper moves along the surface of the fixed seat 7. The topmost printing paper finally enters the paper output seat 5 above the paper feed roller 14 and the mating roller 16, and enters the subsequent printing mechanism.

[0031] When the rotating shaft 18 rotates, it simultaneously drives the fixedly connected incomplete gear 20 to rotate. When the incomplete gear 20 meshes with the first gear 22, it drives the first gear 22 to rotate. The first gear 22 then drives the lifting shaft 9 to rotate. Since the incomplete gear 20 and the first gear 22 do not engage immediately, when the top of the uppermost printing paper enters between the feed roller 14 and the mating roller 16, the lifting sleeve 10 on the lifting shaft 9 pushes the uppermost printing paper, allowing it to enter the paper output seat 5 more quickly. This prevents the lower printing paper from always following the upper printing paper due to the friction of the feed roller 14 alone. The rubber block 33 on the inclined plate 12 can block the lower printing paper, keeping it in its current position. Overall, the uppermost printing paper is separated from the lower paper, preventing paper jams.

[0032] It is worth noting that after long-term use, when the rubber block 33 can no longer effectively intercept the lower layer of paper, the pull-out box 3 can be pulled out and the mounting shaft 36 can be pulled out from the mounting plate 34 and the inclined block to remove the installation of the rubber block 33. After replacing the rubber block 33, the flexible sheet 35 can be pressed tightly against the side wall of the inclined plate 12, and the mounting shaft 36 can be inserted through the inclined block into the mounting plate 34 to complete the installation. The whole frame is more convenient.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper feeding mechanism for a printer, characterized in that, include: Two sets of fixed boxes (1) are respectively set inside the printer and located on both sides. Each set of fixed boxes (1) has a plug-in slot (2) and a pull-out box (3) for placing printing paper is set between the two sets of fixed boxes (1). The pull-out box (3) is provided with a slanted support plate (4) and a paper output seat (5) located inside the printer is set above the pull-out box (3). Paper output assembly (6), which is disposed in the pull-out box (3) and cooperates with the paper output seat (5), includes a fixed seat (7) disposed in the pull-out box (3), the fixed seat (7) has multiple sets of storage slots (8), and a lifting shaft (9) is rotatably connected in the fixed seat (7), and multiple sets of lifting sleeves (10) respectively located in the storage slots (8) are fixedly connected on the lifting shaft (9); A power assembly (11) is disposed in the fixed box (1) and connected to the paper output assembly (6).

2. The paper feeding mechanism for a printer according to claim 1, characterized in that, The paper output assembly (6) includes an inclined plate (12) disposed on the fixed base (7) and located in the middle section. An interceptor (13) is disposed on the inclined plate (12), and a paper feed roller (14) is disposed above the inclined plate (12) on the paper output seat (5). The paper feed roller (14) is fixedly connected to a paper output shaft (15) rotatably connected to the paper output seat (5). The feed end of the paper output seat (5) is provided with a mating roller (16) rotatably connected to the fixed box (1). The paper output shaft (15) is connected to a mating mechanism (17) disposed in the fixed box (1).

3. The paper feeding mechanism for a printer according to claim 2, characterized in that, The cooperating mechanism (17) includes a rotating shaft (18) disposed in and rotatably connected to the fixed box (1). A pulley group (19) for transmission is provided between the rotating shaft (18) and the paper output shaft (15). An incomplete gear (20) is fixedly connected to the rotating shaft (18). An insertion plate (21) adapted to the insertion slot (2) is fixedly connected to the side of the pull-out box (3). A first gear (22) fixedly connected to the lifting shaft (9) is rotatably connected to the insertion plate (21). The incomplete gear (20) meshes with the first gear (22).

4. A paper feeding mechanism for a printer according to claim 3, characterized in that, The power assembly (11) includes an electric motor (23) disposed in and fixedly connected to the fixed box (1). The electric motor (23) and the rotating shaft (18) are located in the same fixed box (1). The output end of the electric motor (23) is fixedly connected to a power shaft (24). A rectangular groove (25) is provided at the end of the power shaft (24) away from the electric motor (23). A first bevel gear (26) is fixedly connected to the power shaft (24). A second bevel gear (27) that meshes with the first bevel gear (26) is fixedly connected to the rotating shaft (18). The pull-out box (3) is provided with docking parts (28) on both sides that are adapted to the positions of the two sets of fixed boxes (1).

5. A paper feeding mechanism for a printer according to claim 4, characterized in that, The docking component (28) includes two sets of fixing blocks (29) respectively disposed on both sides of the pull-out box (3) and fixedly connected thereto. A rectangular shaft (30) is rotatably connected to the fixing block (29) near the power shaft (24). The end of the rectangular shaft (30) is set to be tapered and adapted to the rectangular groove (25). A docking rod (31) is fixedly connected to the other set of fixing blocks (29). A docking cylinder (32) adapted to the docking rod (31) is fixedly connected to the fixing box (1).

6. A paper feeding mechanism for a printer according to claim 5, characterized in that, The interceptor (13) includes a rubber block (33) disposed above the inclined plate (12), an mounting plate (34) disposed below the inclined plate (12), a flexible sheet (35) adapted to the side of the inclined plate (12) is disposed between the rubber block (33) and the mounting plate (34), and an mounting shaft (36) is fixedly connected to the rubber block (33) through the inclined plate (12) and opposite to the mounting plate (34).

7. A paper feeding mechanism for a printer according to claim 1, characterized in that, The lifting sleeve (10) is arranged symmetrically on the lifting shaft (9).

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