A stable paper rolling mechanism for a printer

Abstract

The present invention relates to the technical field of printers, and specifically discloses a stable paper winding mechanism for a printer, comprising a printer housing, wherein an inner wall of the printer housing is movably connected to a rotating shaft, an end of the rotating shaft away from the printer housing is movably connected to a main gear, the bottom of the main gear is movably connected to a driven wheel via a tooth groove, and the right side of the driven wheel is fixedly connected to a paper pickup roller; the present invention provides a fixed cylinder inside the paper pickup roller, and an air pump inside the fixed cylinder. When the suction hole on the paper pickup roller rotates to the bottom, the suction pipe at the bottom of the fixed cylinder coincides with the suction hole, and paper can be adsorbed on the paper pickup roller through the suction pipe and the suction hole, thereby enhancing the paper winding ability of the paper pickup roller, avoiding the problem of poor paper pickup ability due to severe surface wear of the paper pickup roller after long-term use, and ultimately ensuring that paper can be stably fed into the printer for printing, thereby solving the problem of paper jam.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a stable paper rolling mechanism of a printer. Background Art

[0002] Currently, printers are often used in various offices and are a very common office tool. However, paper jams may occur during the use of printers. The problem mainly lies in that after long-term use, the surface of the paper pickup roller becomes smooth due to wear, resulting in reduced friction between the paper and the pickup roller, causing the paper to be misplaced during the feeding process, and eventually leading to paper jams. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a stable paper winding mechanism for a printer, which has the advantages of stable paper transmission and solves the problem of paper jam in the printer.

[0004] The cam is connected to the roller bearing frame of the printer according to the present invention, and the cam is connected to the roller bearing frame of the printer according to the present invention; the cam is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention; the roller bearing frame is connected to the roller bearing frame of the printer according to the present invention;

[0005] The stable paper winding mechanism of the printer of the present invention has a partition chamber fixedly connected to the left side of the inner wall of the fixed cylinder, and the inner wall of the bottom surface of the partition chamber is movably connected to the bottom surface of the dust collection box. The fixed cylinder is divided into an upper and lower parts, and the upper and lower parts of the fixed cylinder are clamped together. By providing the partition chamber, the dust collection box is placed, and by clamping the upper and lower parts of the fixed cylinder, the effect of facilitating the opening of the fixed cylinder is achieved.

[0006] The stable paper winding mechanism of the printer of the present invention is characterized in that the pickup roller is symmetrically divided into two parts, upper and lower, with the center of the fixed cylinder as the midpoint, and the right sides of the upper and lower pickup rollers are movably connected by a hinge, while the left sides of the upper and lower pickup rollers are movably connected. By movably connecting the upper and lower parts of the pickup roller and cooperating with the clamping of the upper and lower parts of the fixed cylinder, it is convenient to replace the dust box.

[0007] The stable paper winding mechanism of the printer of the present invention has fixing holes on both sides of the front surface of the bottom pickup roller, and threaded grooves on both sides of the front surface of the top pickup roller. The threaded grooves and the inner walls of the fixing holes are movably connected with screws. The setting of the fixing holes and the threaded grooves, in conjunction with the screws, facilitates the fixing of the upper and lower pickup rollers.

[0008] The stable paper winding mechanism of the printer of the present invention has a connecting rod fixedly connected to the surface of the pickup roller, a spring movably connected to the surface of the connecting rod, and a spring fixedly connected to the end of the spring away from the connecting rod. By fixing the spring on the pickup roller, a certain pressure can be applied to the paper, thereby avoiding the problem of paper misalignment during paper feeding. The spring and the connecting rod are provided on the spring to further increase the pressure on the paper, thereby allowing the paper to enter the interior of the printer more stably as the pickup roller rotates.

[0009] In the stable paper winding mechanism of the printer of the present invention, the spring piece is made of rubber, and the bottom end of the spring piece is arranged in an arc shape. The spring piece and the air suction hole are arranged on the surface of the paper pickup roller with spacing from left to right. By designing the bottom end of the spring piece in an arc shape, the problem of the spring piece crushing the paper is avoided.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The present invention provides a fixed cylinder inside the pickup roller and an air pump inside the fixed cylinder. When the suction hole on the pickup roller rotates to the bottom, the suction pipe at the bottom of the fixed cylinder coincides with the suction hole. The paper can be adsorbed on the pickup roller through the suction pipe and the suction hole, thereby enhancing the paper winding ability of the pickup roller and avoiding the problem of poor paper pickup ability due to severe surface wear of the pickup roller after long-term use. Ultimately, it ensures that the paper can be stably fed into the printer for printing, solving the problem of paper jam.

[0012] 2. The present invention fixes a spring on the pickup roller to apply a certain pressure to the paper, thereby avoiding the problem of paper misalignment during paper feeding. The spring and connecting rod are provided on the spring to further increase the pressure on the paper, thereby allowing the paper to enter the interior of the printer more stably as the pickup roller rotates. The bottom of the spring is designed to be curved, which avoids the problem of the spring crushing the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the front cross-section structure of the pickup roller of the present invention;

[0016] Figure 3 This is a schematic diagram of the side cross-section structure of the pickup roller of the present invention;

[0017] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0018] In the figure: 1. Printer housing; 2. Paper pickup roller; 3. Rotating shaft; 4. Main gear; 5. Driven pulley; 6. Fixing rod; 7. Fixing cylinder; 8. Air pump; 9. Ventilation pipe; 10. Intake pipe; 11. Intake hole; 12. Interlayer chamber; 13. Dust box; 14. Connecting rod; 15. Spring; 16. Shrapnel; 17. Fixing hole; 18. Threaded groove; 19. Screw. DETAILED DESCRIPTION

[0019] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details are included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0020] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] See also Figure 1-4The stable paper winding mechanism of the printer of the present invention includes a printer housing 1, an inner wall of the printer housing 1 is movably connected to a rotating shaft 3, an end of the rotating shaft 3 away from the printer housing 1 is movably connected to a main gear 4, the bottom of the main gear 4 is movably connected to a driven wheel 5 through a tooth groove, the right side of the driven wheel 5 is fixedly connected to a paper pickup roller 2, the left side of the driven wheel 5 is movably connected to a fixing rod 6 through a through hole, the end of the fixing rod 6 away from the driven wheel 5 is fixedly connected to a fixing cylinder 7, the right end of the inner wall of the fixing cylinder 7 is fixedly connected to an air pump 8, the left side of the air pump 8 is fixedly connected to a ventilation pipe 9, the end of the ventilation pipe 9 away from the air pump 8 is movably connected to a dust box 13, the middle part of the bottom surface of the air pump 8 is fixedly connected to an air intake pipe 10, the bottom side surface of the air intake pipe 10 is aligned with the middle part of the bottom surface of the fixed cylinder 7 The paper pickup roller 2 is movably connected, and an air suction hole 11 is provided on the bottom surface thereof. There are two fixing rods 6, and one end of the two fixing rods 6 away from the fixing cylinder 7 is fixedly connected to the inner wall of the printer housing 1. By arranging a fixing cylinder 7 inside the paper pickup roller 2 and arranging an air pump 8 inside the fixing cylinder 7, when the air suction hole 11 on the paper pickup roller 2 rotates to the bottom of the fixing cylinder 7, the air suction pipe 10 at the bottom of the fixing cylinder 7 coincides with the air suction hole 11, and the paper can be adsorbed on the paper pickup roller 2 through the air suction pipe 10 and the air suction hole 11, thereby enhancing the paper winding ability of the paper pickup roller 2, avoiding the problem of poor paper pickup ability due to severe surface wear of the paper pickup roller 2 after long-term use, and finally ensuring that the paper can be stably fed into the printer for printing, solving the problem of paper jam.

[0022] The left side of the inner wall of the fixed cylinder 7 is fixedly connected with an interlayer chamber 12, and the inner wall of the bottom surface of the interlayer chamber 12 is movably connected to the bottom surface of the dust collecting box 13. The fixed cylinder 7 is divided into two parts, and the upper and lower parts of the fixed cylinder 7 are clamped together. By setting the interlayer chamber 12, the dust collecting box 13 is placed, and by clamping the upper and lower parts of the fixed cylinder 7, the effect of facilitating the opening of the fixed cylinder 7 is achieved.

[0023] The pickup roller 2 is symmetrically divided into two parts, upper and lower, with the center of the fixed cylinder 7 as the midpoint, and the right sides of the upper and lower parts of the pickup roller 2 are movably connected by a hinge, and the left sides of the upper and lower parts of the pickup roller 2 are movably connected. By movably connecting the upper and lower parts of the pickup roller 2 and coordinating the upper and lower parts of the fixed cylinder 7, it is convenient to replace the dust box 13.

[0024] Fixing holes 17 are provided on both sides of the front of the bottom pickup roller 2, and threaded grooves 18 are provided on both sides of the front of the top pickup roller 2. The threaded grooves 18 and the inner walls of the fixing holes 17 are movably connected with screws 19. Through the setting of the fixing holes 17 and the threaded grooves 18, and in conjunction with the screws 19, the upper and lower parts of the pickup roller 2 are conveniently fixed.

[0025] The surface of the pickup roller 2 is fixedly connected to a connecting rod 14, and the surface of the connecting rod 14 is movably connected to a spring 15. The end of the spring 15 away from the connecting rod 14 is fixedly connected to a spring piece 16. By fixing the spring piece 16 on the pickup roller 2, a certain pressure can be applied to the paper, thereby avoiding the problem of paper misalignment during paper feeding. Providing the spring 15 and the connecting rod 14 on the spring piece 16 further increases the pressure on the paper, thereby allowing the paper to enter the interior of the printer more stably as the pickup roller 2 rotates.

[0026] The spring piece 16 is made of rubber, and the bottom end of the spring piece 16 is set to be arc-shaped. The spring piece 16 and the suction hole 11 are arranged on the surface of the paper pickup roller 2 with intervals from left to right. By designing the bottom of the spring piece 16 to be arc-shaped, the problem of the spring piece 16 crushing the paper is avoided.

[0027] When using the present invention: first place the paper to be printed at the printer entrance. At this time, the pickup roller 2 is in a rotating state. Therefore, when the spring piece 16 on the pickup roller 2 contacts the paper, the spring piece 16 will be pressed on the surface of the paper under the action of the elastic force of the spring 15. Since the pickup roller 2 is in a rotating state, the paper can be moved toward the inside of the printer under the drive of the pickup roller 2. Moreover, since a fixed cylinder 7 is provided inside the pickup roller 2, and an air pump 8 is placed inside the fixed cylinder 7, when the suction hole 11 on the pickup roller 2 rotates to the bottom of the fixed cylinder 7, the suction pipe 10 at the bottom of the fixed cylinder 7 coincides with the suction hole 11 on the pickup roller 2. Then, air can be sucked through the air pump 8, and then through the conduction of the suction pipe 10 and the suction hole 11, the paper can be finally adsorbed onto the pickup roller 2, thereby enhancing the paper winding ability of the pickup roller 2. At the tail end of the air pump 8, a ventilation pipe is passed through. 9 is connected to a dust box 13, which plays a role in sucking dust from the surface of the paper, solving the problem that the surface of the current pickup roller 2 becomes severely worn and smooth after long-term use, resulting in insufficient friction during the paper feeding process, making it difficult to stably feed the paper into the printer. The pickup roller 2 and the fixed cylinder 7 are both arranged into two parts, upper and lower parts, and are connected by hinges and card connections respectively, which makes it convenient to open the pickup roller 2 and the fixed cylinder 7, and achieves the effect of convenient replacement of the dust box 13. The fixed cylinder 7 is fixedly connected to the inner wall of the printer housing 1 through the fixing rods 6 at both ends thereof, so that the fixed cylinder 7 does not rotate with the rotation of the pickup roller 2, thereby ensuring the stability of the air pump 8 and the dust box 13 inside the fixed cylinder 7. The coordinated use of the screw 19, the threaded groove 18 on the pickup roller 2 and the fixing hole 17 ensures that the pickup roller 2 is stable during rotation.

[0028] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A stable paper roll mechanism for a printer, comprising a printer housing (1), characterized in that: The inner wall of the printer housing (1) is movably connected to a rotating shaft (3), the end of the rotating shaft (3) away from the printer housing (1) is movably connected to a main gear (4), the bottom of the main gear (4) is movably connected to a driven wheel (5) through a tooth groove, the right side of the driven wheel (5) is fixedly connected to a paper pickup roller (2), the left side of the driven wheel (5) is movably connected to a fixing rod (6) through a through hole, and the end of the fixing rod (6) away from the driven wheel (5) is fixedly connected to a fixing cylinder (7) The right end of the inner wall of the fixed cylinder (7) is fixedly connected to an air pump (8), the left side of the air pump (8) is fixedly connected to a ventilation pipe (9), the end of the ventilation pipe (9) away from the air pump (8) is movably connected to a dust collection box (13), the middle part of the bottom surface of the air pump (8) is fixedly connected to an air suction pipe (10), the bottom side of the air suction pipe (10) is movably connected to the middle part of the bottom surface of the fixed cylinder (7), the bottom surface of the pickup roller (2) is provided with an air suction hole (11), when the pickup roller (2 ) rotates to the bottom of the fixed cylinder (7), the suction pipe (10) at the bottom of the fixed cylinder (7) coincides with the suction hole (11), and the suction pipe (10) and the suction hole (11) adsorb the paper on the pickup roller (2). The number of the fixed rods (6) is two, and one end of the two fixed rods (6) away from the fixed cylinder (7) is fixedly connected to the inner wall of the printer housing (1); the surface of the pickup roller (2) is fixedly connected to A connecting rod (14) is movably connected to a spring (15) on the surface of the connecting rod (14); an end of the spring (15) away from the connecting rod (14) is fixedly connected to a spring (16); the spring (16) is used to contact the paper and apply pressure to the paper after contacting the paper; the spring (16) is made of rubber, and the bottom end of the spring (16) is arranged in an arc shape; the spring (16) and the air suction hole (11) are arranged on the surface of the paper pickup roller (2) at intervals from left to right.

2. The stable paper winding mechanism of a printer according to claim 1, characterized in that: The left side of the inner wall of the fixed cylinder (7) is fixedly connected to a partition chamber (12), and the inner wall of the bottom surface of the partition chamber (12) is movably connected to the bottom surface of the dust collection box (13). The fixed cylinder (7) is divided into an upper and a lower part, and the upper and lower parts of the fixed cylinder (7) are mutually engaged.

3. The stable paper winding mechanism of a printer according to claim 1, characterized in that: The pickup roller (2) is symmetrically divided into two parts, upper and lower, with the center of the fixed cylinder (7) as the midpoint, and the right sides of the upper and lower pickup rollers (2) are movably connected via a hinge, while the left sides of the upper and lower pickup rollers (2) are movably connected.

4. The stable paper winding mechanism of a printer according to claim 3, characterized in that: Both sides of the front of the bottom pickup roller (2) are provided with fixing holes (17), and both sides of the front of the top pickup roller (2) are provided with threaded grooves (18), and the inner walls of the threaded grooves (18) and the fixing holes (17) are movably connected with screw rods (19).

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