Automatic adjusting paper feeding mechanism of printer

Abstract

The utility model discloses an automatic adjusting paper feeding mechanism of a printer, which comprises a paper clamping mechanism and a conveying mechanism, the paper clamping mechanism is arranged at the side end of the printer, and the conveying mechanism is arranged between the paper clamping mechanism and the printer; the paper clamping mechanism comprises a paper placing plate, the paper placing plate is fixedly connected to the side end of the printer, and through a third driving motor, a limiting pressing rod, a second pickup roller, a third rotating shaft, a fourth driving motor, a fifth rotating shaft, a seventh rotating shaft, a paper pressing piece, a third pickup roller and a sixth rotating shaft, a moving block can move slightly according to the thickness of paper. The limiting spring is elastically deformed to adapt to paper of different thicknesses, the paper pressing piece and the paper pressing plate are subjected to angle deflection due to extrusion of printing paper, the first reset spring is elastically deformed, automatic adjustment is achieved, and the universality and adaptability of the device are improved.

Description

Technical Field

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

[0002] As a key output terminal in a computer system, the printer plays a crucial role in accurately converting digital information such as text and images into physical media. With the continuous advancement of technology, printing technology has transcended its single form, giving rise to diverse technological paths and segmented application scenarios, building a solution matrix covering personal, commercial, and industrial fields. Printers can be classified according to printing technology into inkjet printers, laser printers, dot matrix printers, and thermal printers.

[0003] Existing printers rely on a single paper feed roller to drive the paper feeding components. This makes it impossible to precisely adjust the paper feeding mechanism according to the different stages of paper transport. When encountering paper with uneven quality or varying surface roughness, the single paper feed roller struggles to cope flexibly, leading to unstable paper transport speeds and paper jams. This forces operators to clear paper jams, significantly reducing overall printing efficiency. Furthermore, existing printer paper feeding mechanisms are ill-suited to various paper thicknesses. When dealing with thin, thick, or special types of paper, they are prone to poor paper feeding or paper jams. Most paper feeding mechanisms are designed with standard paper thickness in mind, making flexible adjustment difficult. When encountering paper with a thickness significantly different from the standard paper, print quality is affected.

[0004] To address this problem, the present invention provides an automatic paper feeding mechanism for a printer. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an automatic paper feeding mechanism for a printer, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an automatic paper feeding mechanism for a printer, including a paper clamping mechanism and a conveying mechanism, wherein the paper clamping mechanism is disposed on the side of the printer and the conveying mechanism is disposed between the paper clamping mechanism and the printer;

[0007] The paper clamping mechanism includes a paperboard, which is fixedly connected to the side of the printer. A slide rod is fixedly connected to the inner side of the paperboard. A first moving plate is slidably connected to the slide rod. A connecting block is fixedly connected to the first moving plate. A first moving block is slidably connected to the connecting block. A connecting plate is fixedly connected to the side of the first moving block. A pressing block is fixedly connected to the bottom of the connecting plate.

[0008] The conveying mechanism includes a paper feeding board and a first drive motor. The paper feeding board is fixedly connected to the inside of the paper feeding board. A first rotating shaft is rotatably connected to the inside of the slide rod. A first paper feeding roller is fixedly connected to the first rotating shaft. The output end of the first drive motor is fixedly connected to the first rotating shaft. A slot is provided on the paper feeding board. A second drive motor is fixedly connected to the side end of the slide rod. A second rotating shaft is fixedly connected to the output end of the second drive motor. A limiting rod is fixedly connected to the second rotating shaft.

[0009] Preferably, an extrusion wheel is rotatably connected to the extrusion block, two first springs are fixedly connected to the bottom end of the first moving block, and a second moving plate is fixedly connected to the end of the first spring away from the first moving block.

[0010] Preferably, the second movable plate is slidably connected within the connecting block, and an electric rod is fixedly connected to the first movable plate, with the output end of the electric rod fixedly connected to the bottom end of the second movable plate.

[0011] Preferably, the conveying mechanism further includes a guide plate, which is fixedly connected to the side end of the slide rod. The guide plate has several grooves. A limit groove is provided on the side end of the slide rod. A fixed block is fixedly connected to the side end of the slide rod. A second moving block is slidably connected to the limit groove. A limit spring is fixedly connected to the limit groove. The end of the limit spring away from the second moving block is fixedly connected to the bottom end of the fixed block. A limit pressure rod is rotatably connected to the inner side of the second moving block.

[0012] Preferably, the conveying mechanism further includes a third drive motor, which is fixedly connected to the outer side end of the slide bar. The output end of the third drive motor is fixedly connected to a third rotating shaft, and a second paper feeding roller is fixedly connected to the third rotating shaft.

[0013] Preferably, a fourth drive motor is fixedly connected to the side end of the slide rod, a second gear is fixedly connected to the output end of the fourth drive motor, a first gear is meshed with the side end of the second gear, a fifth rotating shaft is fixedly connected to the first gear, a third paper feeding roller is fixedly connected to the fifth rotating shaft, a sixth rotating shaft is fixedly connected to the inner side end of the slide rod, a paper pressing component is provided on the sixth rotating shaft, a first return spring is provided inside the paper pressing component, a seventh rotating shaft is rotatably connected to the paper pressing component, a pressure plate is provided on the sixth rotating shaft, and a second return spring is provided on the pressure plate.

[0014] Beneficial effects

[0015] This invention provides an automatic paper feeding mechanism for a printer. Compared with the prior art, it has the following advantages:

[0016] (1) An automatic paper feeding mechanism for a printer, wherein the first drive motor is started to drive the first paper feeding wheel to rotate and rub the printing paper, and the second drive motor is used to deflect the limiting rod. Through the coordinated operation, the paper can be kept stable and smooth during transmission, and the limiting rod reduces the occurrence of paper jams and improves printing efficiency. Then, through the third drive motor, the limiting pressure rod, the second paper feeding wheel, the third rotating shaft, the fourth drive motor, the fifth rotating shaft, the seventh rotating shaft, the paper pressing component, the third paper feeding wheel and the sixth rotating shaft, the moving block can be moved slightly according to the paper thickness, so that the limiting spring undergoes elastic deformation, thereby adapting to different paper thicknesses. The paper pressing component and the paper pressing plate are deflected by the pressure angle of the printing paper, and the first reset spring undergoes elastic deformation, automatically adjusting and improving the versatility and adaptability of the device.

[0017] (2) An automatic paper feeding mechanism for a printer, which adjusts the distance between moving plates and uses electric rods, springs and other components to drive connecting plates and squeezing rollers to squeeze the printing paper, can achieve precise clamping and positioning of paper of different sizes, ensure that the paper remains stable during transmission, and is conducive to improving printing quality and accuracy. Attached Figure Description

[0018] Figure 1 This is a side view of the overall device structure of this utility model;

[0019] Figure 2 This is a side view of the conveying mechanism structure of this utility model;

[0020] Figure 3 This is a structural diagram of the conveying mechanism of this utility model;

[0021] Figure 4 This is a side view of the paper clamping mechanism structure of this utility model;

[0022] Figure 5 This is a cross-sectional view of the paper clamping mechanism of this utility model;

[0023] Figure 6 This is the utility model Figure 2 Partial A structure diagram;

[0024] Figure 7 This is the utility model Figure 2 Local B-structure diagram;

[0025] Figure 8 This is the utility model Figure 2 Local C-structure diagram;

[0026] Figure 9 This is the utility model Figure 2 Local D-structure diagram.

[0027] 1. Printer in the picture;

[0028] Paper clamping mechanism: 21. Paperboard placement; 22. Slide bar; 23. First moving plate; 24. Connecting block; 25. First moving block; 26. Connecting plate; 27. Squeezing block; 28. Squeezing wheel; 29. ​​Electric rod; 291. First spring; 292. Second moving plate;

[0029] Conveying mechanism: 31. Paper feeder; 32. First drive motor; 33. First rotating shaft; 34. First paper feed roller; 35. Second drive motor; 36. Third drive motor; 37. Second rotating shaft; 38. Limiting rod; 39. Guide plate; 391. Limiting groove; 392. Fixing block; 393. Limiting spring; 394. Second moving block; 395. Limiting pressure rod; 396. Second paper feed roller; 397. Third rotating shaft; 398. Fourth drive motor; 399. First gear; 3991. Fifth rotating shaft; 3992. Sixth rotating shaft; 3993. Paper pressing component; 3994. First return spring; 3995. Seventh rotating shaft; 3996. Paper pressing plate; 3997. Second return spring; 3998. Third paper feed roller. Detailed Implementation

[0030] 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.

[0031] Example 1:

[0032] Please see Figure 1-7 An automatic paper feeding mechanism for a printer includes a paper clamping mechanism and a conveying mechanism. The paper clamping mechanism is located on the side of the printer 1, and the conveying mechanism is located between the paper clamping mechanism and the printer 1.

[0033] The paper clamping mechanism includes a paperboard 21, which is fixedly connected to the side of the printer 1. A slide rod 22 is fixedly connected to the inner side of the paperboard 21. A first moving plate 23 is slidably connected to the slide rod 22. A connecting block 24 is fixedly connected to the first moving plate 23. A first moving block 25 is slidably connected to the connecting block 24. A connecting plate 26 is fixedly connected to the side of the first moving block 25. A pressing block 27 is fixedly connected to the bottom of the connecting plate 26.

[0034] The conveying mechanism includes a paper feeding plate 31 and a first drive motor 32. The paper feeding plate 31 is fixedly connected to the inside of the paper feeding plate 21. A first rotating shaft 33 is rotatably connected to the inside of the slide bar 22. A first paper feeding roller 34 is fixedly connected to the first rotating shaft 33. The output end of the first drive motor 32 is fixedly connected to the first rotating shaft 33. A slot is provided on the paper feeding plate 31. A second drive motor 35 is fixedly connected to the side end of the slide bar 22. A second rotating shaft 37 is fixedly connected to the output end of the second drive motor 35. A limiting rod 38 is fixedly connected to the second rotating shaft 37.

[0035] An extrusion wheel 28 is rotatably connected to the extrusion block 27. Two first springs 291 are fixedly connected to the bottom end of the first moving block 25. A second moving plate 292 is fixedly connected to the end of the first spring 291 away from the first moving block 25.

[0036] The second movable plate 292 is slidably connected inside the connecting block 24, and an electric rod 29 is fixedly connected to the first movable plate 23. The output end of the electric rod 29 is fixedly connected to the bottom end of the second movable plate 292.

[0037] The conveying mechanism also includes a guide plate 39, which is fixedly connected to the side of the slide bar 22. The guide plate 39 has several grooves. The side of the slide bar 22 has a limit groove 391. A fixed block 392 is fixedly connected to the side of the slide bar 22. A second moving block 394 is slidably connected to the limit groove 391. A limit spring 393 is fixedly connected to the limit groove 391. The end of the limit spring 393 away from the second moving block 394 is fixedly connected to the bottom of the fixed block 392. A limit pressure rod 395 is rotatably connected to the inside of the second moving block 394.

[0038] The conveying mechanism also includes a third drive motor 36, which is fixedly connected to the outer side of the slide bar 22. The output end of the third drive motor 36 is fixedly connected to a third rotating shaft 397, and a second paper feeding roller 396 is fixedly connected to the third rotating shaft 397.

[0039] A fourth drive motor 398 is fixedly connected to the side end of the slide rod 22. A second gear is fixedly connected to the output end of the fourth drive motor 398. A first gear 399 is meshed with the side end of the second gear. A fifth rotating shaft 3991 is fixedly connected to the first gear 399. A third paper feeding roller 3998 is fixedly connected to the fifth rotating shaft 3991. A sixth rotating shaft 3992 is fixedly connected to the inner side end of the slide rod 22. A paper pressing component 3993 is provided on the sixth rotating shaft 3992. A first return spring 3994 is provided inside the paper pressing component 3993. A seventh rotating shaft 3995 is rotatably connected to the paper pressing component 3993. A paper pressing plate 3996 is provided on the sixth rotating shaft 3992. A second return spring 3997 is provided on the paper pressing plate 3996.

[0040] Working process: The printing paper is placed on the feed plate 31. The distance between the moving plates 23 is adjusted, and the electric rod 29 is controlled to extend and retract, thereby controlling the second moving plate 292 to move along the connecting block 24. The spring 291 pulls the first moving block 25 to move along the connecting block 24, thereby driving the connecting plate 26 to move towards the printing paper. The extrusion roller 28 is used to extrude the printing paper.

[0041] The first drive motor 32 is started, causing the first rotating shaft 33 to rotate. The rotation of the first rotating shaft 33 drives the first paper feed roller 34 to rotate, and the friction of the first paper feed roller 34 moves the printing paper. Then the second drive motor 35 is started, causing the second rotating shaft 37 to rotate. This causes the limiting rod 38 on the second rotating shaft 37 to deflect, facilitating the movement of the paper away from the paper feed board 31. The third drive motor 36 is started, driving the third rotating shaft 397 to rotate. The rotation of the third rotating shaft 397 drives the second paper feed roller 39... 6. As the paper rolls, it passes between the second paper feed roller 396 and the limiting pressure bar 395. When the paper passes between the second paper feed roller 396 and the limiting pressure bar 395, the moving block 394 will deviate slightly according to the thickness of the paper, which will cause the limiting spring 393 to elastically deform. This allows papers of different thicknesses to pass between the second paper feed roller 396 and the limiting pressure bar 395. After the paper passes, the limiting spring 393 will return to its original position, so that the distance between the limiting pressure bar 395 and the second paper feed roller 396 is adjusted to the initial distance.

[0042] The fourth drive motor 398 is then started, causing the second gear to rotate. The second gear drives the first gear 399 to rotate, which in turn drives the fifth rotating shaft 3991 to rotate. The fifth rotating shaft 3991 then drives the third paper feeding roller 3998 to rotate. Papers of different thicknesses pass through the gap between the third paper feeding roller 3998 and the seventh rotating shaft 3995. After the printing paper passes through, it returns to its original position by the first return spring 3994, thereby pressing the paper pressing component 3993 against the guide plate 39 again.

[0043] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0044] 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.

[0045] 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. An automatic paper feeding mechanism for a printer, characterized in that, It includes a paper clamping mechanism and a conveying mechanism, wherein the paper clamping mechanism is disposed on the side of the printer (1) and the conveying mechanism is disposed between the paper clamping mechanism and the printer (1); The paper clamping mechanism includes a paperboard (21), which is fixedly connected to the side of the printer (1). A slide rod (22) is fixedly connected to the inner side of the paperboard (21). A first moving plate (23) is slidably connected to the slide rod (22). A connecting block (24) is fixedly connected to the first moving plate (23). A first moving block (25) is slidably connected to the connecting block (24). A connecting plate (26) is fixedly connected to the side of the first moving block (25). A pressing block (27) is fixedly connected to the bottom of the connecting plate (26). The conveying mechanism includes a paper feeding board (31) and a first drive motor (32). The paper feeding board (31) is fixedly connected to the inside of the paper feeding board (21). The inner side of the slide bar (22) is rotatably connected to a first rotating shaft (33). A first paper feeding roller (34) is fixedly connected to the first rotating shaft (33). The output end of the first drive motor (32) is fixedly connected to the first rotating shaft (33). The paper feeding board (31) is provided with a slot. The side end of the slide bar (22) is fixedly connected to a second drive motor (35). The output end of the second drive motor (35) is fixedly connected to a second rotating shaft (37). A limiting rod (38) is fixedly connected to the second rotating shaft (37).

2. The automatic paper feeding mechanism for a printer according to claim 1, characterized in that: The extrusion block (27) is rotatably connected to an extrusion wheel (28), and the bottom end of the first moving block (25) is fixedly connected to two first springs (291). The end of the first spring (291) away from the first moving block (25) is fixedly connected to a second moving plate (292).

3. The automatic paper feeding mechanism for a printer according to claim 2, characterized in that: The second movable plate (292) is slidably connected inside the connecting block (24), and an electric rod (29) is fixedly connected to the first movable plate (23). The output end of the electric rod (29) is fixedly connected to the bottom end of the second movable plate (292).

4. The automatic paper feeding mechanism of a printer according to claim 1, characterized in that: The conveying mechanism also includes a guide plate (39), which is fixedly connected to the side end of the slide rod (22). The guide plate (39) has several grooves. The slide rod (22) has a limit groove (391) on its side end. A fixed block (392) is fixedly connected to the side end of the slide rod (22). A second moving block (394) is slidably connected to the limit groove (391). A limit spring (393) is fixedly connected to the limit groove (391). The end of the limit spring (393) away from the second moving block (394) is fixedly connected to the bottom end of the fixed block (392). A limit pressure rod (395) is rotatably connected to the inner side of the second moving block (394).

5. The automatic paper feeding mechanism for a printer according to claim 4, characterized in that: The conveying mechanism also includes a third drive motor (36), which is fixedly connected to the outer side of the slide bar (22). The output end of the third drive motor (36) is fixedly connected to a third rotating shaft (397), and a second paper feeding roller (396) is fixedly connected to the third rotating shaft (397).

6. The automatic paper feeding mechanism for a printer according to claim 5, characterized in that: A fourth drive motor (398) is fixedly connected to the side end of the slide rod (22). A second gear is fixedly connected to the output end of the fourth drive motor (398). A first gear (399) is meshed with the side end of the second gear. A fifth rotating shaft (3991) is fixedly connected to the first gear (399). A third paper feeding wheel (3998) is fixedly connected to the fifth rotating shaft (3991). A sixth rotating shaft (3992) is fixedly connected to the inner side end of the slide rod (22). A paper pressing component (3993) is provided on the sixth rotating shaft (3992). A first return spring (3994) is provided inside the paper pressing component (3993). A seventh rotating shaft (3995) is rotatably connected to the paper pressing component (3993). A pressing plate (3996) is provided on the sixth rotating shaft (3992). A second return spring (3997) is provided on the pressing plate (3996).

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