Automatic paper feeding device of printer

Abstract

The utility model discloses an automatic paper feeding device of a printer, which comprises a paper feeding bin assembly and a paper feeding roller assembly, the paper feeding bin assembly comprises a paper feeding bin body, the front side of the paper feeding bin is provided with a paper inlet, the rear side of the paper feeding bin is provided with a paper outlet groove, and the paper feeding roller assembly comprises a first paper feeding roller, a second paper feeding roller, a third paper feeding roller and a fourth paper feeding roller. The automatic paper feeding device is novel in structural design and convenient to operate, the purpose of automatic paper feeding can be achieved, meanwhile, the distance between paper and the paper feeding roller can be automatically adjusted, paper feeding uniformity is ensured, and the printing efficiency of the printer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to an automatic paper feeding device for a printer. Background Art

[0002] A printer is a computer output device used to print computer processing results onto a medium (such as paper). There are many types of printers, including cylindrical, spherical, inkjet, thermal, laser, electrostatic, magnetic, and LED printers. Existing printers typically have a paper feed mechanism, which can be manual or fully automatic.

[0003] Chinese Patent No. 201921815689.8 discloses a paper feeding device for a printer. During the paper feeding process, the paper is always positioned between the limit plates, preventing paper deviation and causing paper jams, thereby reducing paper waste. However, this device fails to achieve uniform paper feeding and cannot automatically adjust the distance between the paper and the paper feed mechanism, resulting in low paper feeding efficiency. Therefore, it is necessary to design an automatic paper feeding device for printers. Utility Model Content

[0004] The purpose of the present utility model is to provide an automatic paper feeding device for a printer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic paper feeding device for a printer, comprising a paper feed bin assembly and a paper feed roller assembly;

[0006] Among them, the paper feed bin assembly includes a paper feed bin body, a paper feed port is provided on the front side of the paper feed bin, and a paper output slot is provided on the rear side of the paper feed bin;

[0007] A paper feed roller assembly comprises a first paper feed roller, a second paper feed roller, a third paper feed roller and a fourth paper feed roller. A paper detection sensor is also installed on the outer side wall of the paper output slot of the paper feed bin.

[0008] Preferably, the present application provides a printer automatic paper feeding device, wherein a driving gear and a first sleeve are respectively installed at both ends of the first paper feed roller; a first driven gear and a second sleeve are respectively installed at both ends of the second paper feed roller; a second driven gear and a third sleeve are respectively installed at both ends of the third paper feed roller; and a third driven gear and a fourth sleeve are respectively installed at both ends of the fourth paper feed roller.

[0009] Preferably, the present application provides an automatic paper feeding device for a printer, wherein the driving gear, the first driven gear, the second driven gear, and the third driven gear are meshed with each other for transmission.

[0010] Preferably, the present application provides an automatic paper feeding device for a printer, wherein the outer end of the first paper feeding roller is also transmission-connected to a servo motor, and the servo motor is located outside the driving gear.

[0011] Preferably, the present application provides an automatic paper feeding device for a printer, wherein a paper feed board assembly is also installed in the paper feed bin body, the paper feed board assembly includes a paper feed board and a height self-adjusting assembly, and a height self-adjusting assembly is arranged between the lower end surface of the paper feed board and the bottom wall of the paper feed bin body.

[0012] Preferably, the present application provides an automatic paper feeding device for a printer, wherein the height self-adjusting component includes a cylinder, a column, a support pad and a buffer spring, the cylinder is fixed to the inner bottom wall of the paper feed bin body, the top of the column is connected to the support pad, the bottom end of the column extends into the inner cavity of the cylinder, an annular protrusion is provided on the outer side wall of the column, the bottom end of the buffer spring is fixed to the inner bottom wall of the cylinder, and the top end of the buffer spring is sleeved on the outside of the column.

[0013] Preferably, the present application provides an automatic paper feeding device for a printer, wherein the diameters of the first paper feed roller, the second paper feed roller, the third paper feed roller and the fourth paper feed roller decrease in sequence.

[0014] Preferably, the present application provides a printer automatic paper feeding device, wherein a plurality of first rubber wheels are arranged at equal intervals on the outer side wall of the first paper feed roller; a plurality of second rubber wheels are arranged at equal intervals on the outer side wall of the second paper feed roller; a plurality of third rubber wheels are arranged at equal intervals on the outer side wall of the third paper feed roller; and a plurality of fourth rubber wheels are arranged at equal intervals on the outer side wall of the fourth paper feed roller.

[0015] Preferably, the present application provides an automatic paper feeding device for a printer, wherein the first rubber wheel, the second rubber wheel, the third rubber wheel, and the fourth rubber wheel are arranged alternately in sequence.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The utility model has a novel structure and is easy to operate. It can achieve the purpose of automatic paper feeding and can automatically adjust the distance between the paper and the paper feed roller to ensure the uniformity of paper feeding and improve the printing efficiency of the printer.

[0018] (2) In the present invention, when the servo motor is working, it drives the driving gear to rotate, and the driving gear drives the first driven gear, the second driven gear, and the third driven gear to rotate in turn, thereby realizing the simultaneous rotation of the first paper feed roller, the second paper feed roller, the third paper feed roller, and the fourth paper feed roller, thereby achieving the purpose of fast paper feeding.

[0019] (3) In the present invention, the height self-adjusting component can automatically adjust the distance between the paper and the paper feed roller according to the paper pressure on the paper feed paper board, effectively preventing the occurrence of paper feeding problems or paper jams, and further improving paper feeding efficiency.

[0020] (4) In the present invention, the first rubber wheel, the second rubber wheel, the third rubber wheel, and the fourth rubber wheel are arranged alternately in sequence. This structure can increase the force-bearing area of ​​the printing paper, thereby effectively preventing wrinkles from occurring during the paper feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the paper feed bin body of the utility model;

[0022] Figure 2 This is a top view of the installation of the paper feed roller assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the height self-adjusting component of the utility model;

[0024] In the figure: paper feed bin body 1, paper feed port 2, first paper feed roller 3, second paper feed roller 4, third paper feed roller 5, fourth paper feed roller 6, paper detection sensor 7, driving gear 8, first sleeve 9, first driven gear 10, second sleeve 11, second driven gear 12, third sleeve 13, third driven gear 14, fourth sleeve 15, servo motor 16, paper feed paper board 17, height self-adjusting component 18, cylinder 19, column 20, support pad 21, buffer spring 22, annular protrusion 23, first rubber wheel 24, second rubber wheel 25, third rubber wheel 26, fourth rubber wheel 27. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for implementation of this application. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of this application. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of this application without substantially changing the technical content.

[0030] See also Figure 1-3 , the utility model provides a technical solution: a printer automatic paper feeding device, including a paper feed bin assembly and a paper feed roller assembly;

[0031] Among them, the paper feed bin assembly includes a paper feed bin body 1, a paper feed port 2 is provided on the front side of the paper feed bin body 1, and a paper output slot is provided on the rear side of the paper feed bin body 1;

[0032] The paper feed roller assembly includes a first paper feed roller 3, a second paper feed roller 4, a third paper feed roller 5 and a fourth paper feed roller 6. A paper detection sensor 7 is also installed on the outer side wall of the paper output slot of the paper feed bin body 1.

[0033] In the present invention, a driving gear 8 and a first sleeve 9 are respectively installed at both ends of the first paper feed roller 3; a first driven gear 10 and a second sleeve 11 are respectively installed at both ends of the second paper feed roller 4; a second driven gear 12 and a third sleeve 13 are respectively installed at both ends of the third paper feed roller 5; a third driven gear 14 and a fourth sleeve 15 are respectively installed at both ends of the fourth paper feed roller 6; the driving gear 8, the first driven gear 10, the second driven gear 12, and the third driven gear 14 are meshed and driven with each other; the outer end of the first paper feed roller 3 is also connected to a servo motor 16, and the servo motor 16 is located outside the driving gear 8. In the present invention, when the servo motor is working, it drives the driving gear to rotate, and the driving gear drives the first driven gear, the second driven gear, and the third driven gear to rotate in turn, thereby realizing the simultaneous rotation of the first paper feed roller, the second paper feed roller, the third paper feed roller, and the fourth paper feed roller, thereby achieving the purpose of fast paper feeding.

[0034] In the present invention, a paper feed paper assembly is also installed in the paper feed bin body 1, and the paper feed paper assembly includes a paper feed paper 17 and a height self-adjusting assembly 18. The height self-adjusting assembly 18 is set between the lower end surface of the paper feed paper 17 and the inner bottom wall of the paper feed bin body 1; wherein the height self-adjusting assembly 18 includes a cylinder 19, a column 20, a support pad 21 and a buffer spring 22. The cylinder 19 is fixed to the inner bottom wall of the paper feed bin body 1, the top end of the column 20 is connected to the support pad 21, the bottom end of the column 20 extends into the inner cavity of the cylinder 19, the outer wall of the column 20 is provided with an annular protrusion 23, the bottom end of the buffer spring 22 is fixed to the inner bottom wall of the cylinder 19, and the top end of the buffer spring 22 is sleeved on the outside of the column 20. In the present invention, the height self-adjusting assembly can automatically adjust the distance between the paper and the paper feed roller according to the paper pressure on the paper feed paper, effectively preventing the phenomenon of poor paper feeding or paper jams, and further improving paper feeding efficiency.

[0035] In this utility model, the diameters of the first, second, third, and fourth paper feed rollers 3, 4, 5, and 6 decrease in order. Multiple first rubber wheels 24 are evenly spaced on the outer wall of the first paper feed roller 3; multiple second rubber wheels 25 are evenly spaced on the outer wall of the second paper feed roller 4; multiple third rubber wheels 26 are evenly spaced on the outer wall of the third paper feed roller 5; and multiple fourth rubber wheels 27 are evenly spaced on the outer wall of the fourth paper feed roller 6. The first, second, third, and fourth rubber wheels 24, 25, 26, and 27 are staggered in sequence. This structure increases the force-bearing area of ​​the printing paper, effectively preventing wrinkles during paper feeding.

[0036] Working principle: Place the printing paper on the paper feed paper board. During the printing process, if the paper detection sensor detects that there is no paper at the paper output slot, the sensor signal will be fed back to the external controller. The controller controls the servo motor to work. When the servo motor works, it drives the driving gear to rotate. The driving gear drives the first driven gear, the second driven gear, and the third driven gear to rotate in turn, thereby realizing the simultaneous rotation of the first paper feed roller, the second paper feed roller, the third paper feed roller, and the fourth paper feed roller. During the rotation of the paper feed roller, the rubber wheel is driven to rotate. The rubber wheel feeds the printing paper into the printer through friction for printing.

[0037] In summary, the utility model has a novel structural design and is easy to operate. It can achieve the purpose of automatic paper feeding and can automatically adjust the distance between the paper and the paper feed roller to ensure paper feeding uniformity and improve the printing efficiency of the printer.

[0038] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0039] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A printer automatic paper feeding device, characterized by: It includes a paper feed bin assembly and a paper feed roller assembly; Wherein, the paper feed bin assembly comprises a paper feed bin body (1), a paper feed port (2) is provided on the front side of the paper feed bin body (1), and a paper discharge slot is provided on the rear side of the paper feed bin body (1); A paper feed roller assembly comprises a first paper feed roller (3), a second paper feed roller (4), a third paper feed roller (5) and a fourth paper feed roller (6); a paper detection sensor (7) is also installed on the outer side wall of the paper output slot of the paper feed bin body (1).

2. The automatic paper feeding device for a printer according to claim 1, characterized in that: A driving gear (8) and a first sleeve (9) are respectively installed at both ends of the first paper feed roller (3); a first driven gear (10) and a second sleeve (11) are respectively installed at both ends of the second paper feed roller (4); a second driven gear (12) and a third sleeve (13) are respectively installed at both ends of the third paper feed roller (5); and a third driven gear (14) and a fourth sleeve (15) are respectively installed at both ends of the fourth paper feed roller (6).

3. The automatic paper feeding device for a printer according to claim 2, characterized in that: The driving gear (8), the first driven gear (10), the second driven gear (12), and the third driven gear (14) are meshed with each other for transmission.

4. The automatic paper feeding device for a printer according to claim 1, characterized in that: The outer end of the first paper feeding roller (3) is also transmission-connected to a servo motor (16), and the servo motor (16) is located outside the driving gear (8).

5. The automatic paper feeding device for a printer according to claim 1, characterized in that: A paper feed paper assembly is also installed in the paper feed bin body (1), and the paper feed paper assembly includes a paper feed paper (17) and a height self-adjusting assembly (18). The height self-adjusting assembly (18) is arranged between the lower end surface of the paper feed paper (17) and the inner bottom wall of the paper feed bin body (1).

6. The automatic paper feeding device for a printer according to claim 5, characterized in that: The height self-adjusting component (18) comprises a cylinder (19), a column (20), a support pad (21) and a buffer spring (22); the cylinder (19) is fixed to the inner bottom wall of the paper feed bin body (1); the top of the column (20) is connected to the support pad (21); the bottom of the column (20) extends into the inner cavity of the cylinder (19); an annular protrusion (23) is provided on the outer wall of the column (20); the bottom of the buffer spring (22) is fixed to the inner bottom wall of the cylinder (19); and the top of the buffer spring (22) is sleeved on the outer side of the column (20).

7. The automatic paper feeding device for a printer according to claim 1, characterized in that: The diameters of the first paper feed roller (3), the second paper feed roller (4), the third paper feed roller (5) and the fourth paper feed roller (6) decrease in sequence.

8. The automatic paper feeding device for a printer according to claim 1, characterized in that: A plurality of first rubber wheels (24) are arranged at equal intervals on the outer wall of the first paper feed roller (3); a plurality of second rubber wheels (25) are arranged at equal intervals on the outer wall of the second paper feed roller (4); a plurality of third rubber wheels (26) are arranged at equal intervals on the outer wall of the third paper feed roller (5); and a plurality of fourth rubber wheels (27) are arranged at equal intervals on the outer wall of the fourth paper feed roller (6).

9. The automatic paper feeding device for a printer according to claim 8, characterized in that: The first rubber wheel (24), the second rubber wheel (25), the third rubber wheel (26), and the fourth rubber wheel (27) are arranged alternately in sequence.

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