Paper feeding mechanism of music playing machine for music playing

Abstract

The utility model relates to the technical field of music playing machines, and discloses a paper feeding mechanism of a music playing machine, which comprises a shell, a paper box is slidably connected to the front side of the shell, printing paper is placed in the paper box, and a plurality of electric telescopic rods are fixedly connected to the top of the shell at equal intervals. And the output ends of the multiple electric telescopic rods are fixedly connected with the same inner support, the left end of the top of the inner support is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a driving gear, and the interior of the inner support is rotationally connected with a rotating roller. According to the utility model, the driving motor drives the driving gear, the driven gear drives the rotating roller to rotate for paper extraction, and the paper automatic detection mechanism monitors the residual amount of paper in real time, thereby realizing convenient paper replacement, high-precision adaptation, automatic feeding and real-time monitoring of the amount of paper, avoiding printing interruption, and ensuring stable and efficient operation of the music score printer. And the working efficiency and experience are improved.

Description

Technical Field

[0001] This utility model relates to the field of music notation machine technology, and in particular to a paper feeding mechanism for a music notation machine. Background Technology

[0002] As a device that transforms the ideas of music creators into standardized musical scores, the paper feeding mechanism of a music recorder is a mechanical device specifically designed for automatic and precise paper feeding to meet the needs of the recorder in printing musical scores. It ensures the accuracy and stability of paper feeding, thereby guaranteeing that the recorder can continuously and efficiently print the musical scores clearly on the paper, providing high-quality musical score output for music creators and performers.

[0003] Traditional printing presses use simple rollers to squeeze the paper and rely on friction to feed it, thus avoiding the problems of discontinuous and skewed paper feeding caused by manual feeding and ensuring the continuity of the printing process to a certain extent.

[0004] However, this traditional design involves a cumbersome paper replacement process, requiring a significant amount of time and effort to disassemble and reassemble the paper tray, which impacts work efficiency. Furthermore, it has extremely poor adaptability to different paper thicknesses. Due to the lack of a flexible height adjustment mechanism, the paper feeding mechanism struggles to automatically adjust the positions of relevant components according to paper thickness, leading to paper jams when feeding thicker or thinner paper, severely affecting print quality. Additionally, relying solely on the user's visual observation of remaining paper makes it impossible to accurately monitor the paper level in real time. Running out of paper causes printing interruptions, wasting time and resulting in the loss of some sheet music content, further reducing the stability and printing efficiency of the music printer. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a paper feeding mechanism for a music notation machine, which aims to improve the problem that in the prior art, a lot of time and effort is required to disassemble and install the paper box when changing paper, and at the same time, it is impossible to keep track of the paper inventory in real time and accurately.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a paper feeding mechanism for a music notation machine, comprising a housing, a paper box slidably connected to the front side of the housing, printing paper placed inside the paper box, multiple electric telescopic rods fixedly connected at equal intervals to the top of the housing, the output ends of the multiple electric telescopic rods being fixedly connected to the same inner bracket, a drive motor fixedly connected to the top left end of the inner bracket, a drive gear fixedly connected to the output end of the drive motor, a rotating roller rotatably connected inside the inner bracket, a driven gear fixedly connected to the outer left side of the rotating roller, the drive gear meshing with the driven gear, and an automatic paper detection mechanism provided on the front side of the inner bracket, the automatic paper detection mechanism being used to monitor the remaining amount of printing paper in real time.

[0007] As a further description of the above technical solution:

[0008] The automatic paper detection mechanism includes two side legs. Each side leg has a travel groove at its bottom left and right sides. A rubber wheel is rotatably connected to the bottom of each side leg. The left and right ends of the rubber wheel are rotatably connected to the interiors of the two travel grooves, respectively. Pressure monitoring plates are fixedly connected to the middle of each side leg. Both pressure monitoring plates are electrically connected to multiple electric telescopic rods. Travel sleeves are fixedly connected to the bottom of each pressure monitoring plate. Springs are installed inside each travel sleeve. A collar is fixedly connected to the bottom of each travel sleeve, and the two collars are respectively fitted onto the left and right ends of the rubber wheel.

[0009] As a further description of the above technical solution:

[0010] An observation window is fixedly connected to the front left end of the cardboard box, and the rear end of the observation window extends through the interior of the cardboard box.

[0011] As a further description of the above technical solution:

[0012] A handle is fixedly connected to the center of the front side of the cardboard box, and the outside of the handle is frosted.

[0013] As a further description of the above technical solution:

[0014] The top of each of the two side legs is fixedly connected to a triangular brace, and the rear sides of the two triangular braces are respectively fixedly connected to the left and right ends of the front side of the inner bracket.

[0015] As a further description of the above technical solution:

[0016] A flashing indicator light is fixedly connected to the front left end of the housing, and the flashing indicator light is electrically connected to multiple pressure monitoring plates.

[0017] As a further description of the above technical solution:

[0018] The rotating roller has anti-slip grooves on its outside, and the anti-slip grooves adopt a mesh cross-shaped design.

[0019] As a further description of the above technical solution:

[0020] The outer surface of the rubber wheel is treated with a frosted finish, and both the left and right sides of the outer surface of the rubber wheel are chamfered.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the height of the inner support is adjusted by an electric telescopic rod to adapt to the paper, the drive motor drives the drive gear, and the driven gear causes the rotating roller to rotate to draw the paper. The remaining paper amount is monitored in real time by an automatic paper detection mechanism. This achieves convenient paper replacement, highly accurate adaptation, automatic feeding and real-time monitoring of paper amount, avoids printing interruption, ensures stable and efficient operation of the printing machine, and improves work efficiency and experience.

[0023] 2. In this utility model, the pressure monitoring plate receives the pressure signal, and the travel sleeve and spring assist in accurate detection. The pressure monitoring plate transmits the signal to the electric telescopic rod, realizing accurate monitoring of the remaining amount of printing paper. It can automatically adjust the height of the inner support to ensure paper delivery and can also trigger an alarm to remind the user, effectively avoiding printing interruption and ensuring the stable and efficient operation of the printer. Attached Figure Description

[0024] Figure 1 A perspective view of the paper feeding mechanism of a music notation machine proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the paper feeding mechanism of a music notation machine proposed in this utility model.

[0026] Figure 3 This is a cross-sectional view of the inner support in the paper feeding mechanism of a music notation machine according to the present invention.

[0027] Figure 4 This is a schematic diagram of the automatic paper detection mechanism in the paper feeding mechanism of a music notation machine proposed in this utility model.

[0028] Figure 5 This is a structurally exploded view of the travel sleeve in the paper feeding mechanism of a music notation machine according to this utility model.

[0029] Legend:

[0030] 1. Outer casing; 2. Automatic paper detection mechanism; 201. Side support leg; 202. Stroke groove; 203. Rubber wheel; 204. Pressure monitoring plate; 205. Stroke sleeve; 206. Spring; 207. Collar; 3. Paper tray; 4. Electric telescopic rod; 5. Inner support; 6. Drive motor; 7. Drive gear; 8. Rotating roller; 9. Driven gear; 10. Printing paper; 11. Observation window; 12. Handle; 13. Triangular brace; 14. Flashing indicator light; 15. Anti-slip groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0032] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a paper feeding mechanism for a music notation machine, including a housing 1, a paper box 3 slidably connected to the front side of the housing 1, printing paper 10 placed inside the paper box 3, multiple electric telescopic rods 4 fixedly connected at equal intervals to the top of the housing 1, the output ends of the multiple electric telescopic rods 4 are all fixedly connected to the same inner bracket 5, a drive motor 6 is fixedly connected to the top left end of the inner bracket 5, a drive gear 7 is fixedly connected to the output end of the drive motor 6, a rotating roller 8 is rotatably connected inside the inner bracket 5, a driven gear 9 is fixedly connected to the left side of the outside of the rotating roller 8, the drive gear 7 and the driven gear 9 are meshed and connected, and an automatic paper detection mechanism 2 is provided on the front side of the inner bracket 5, the automatic paper detection mechanism 2 is used to monitor the remaining quantity of printing paper 10 in real time;

[0033] Specifically, the entire paper feeding mechanism is built on the outer shell 1 as its basic framework. The front of the outer shell 1 is designed with a sliding paper tray 3, which allows users to easily load or unload the paper tray 3 containing the printing paper 10, improving the convenience of paper replacement. In the power transmission of the paper feeding mechanism, multiple electric telescopic rods 4 are fixedly connected at equal intervals to the top of the outer shell 1, and their output ends are all connected to the same inner support 5. The electric telescopic rods 4 can be extended or shortened according to actual needs, thereby flexibly adjusting the height of the inner support 5. When it is necessary to adapt to printing paper 10 of different thicknesses, or during equipment debugging, by adjusting the electric telescopic rods 4, the height of the inner support 5 and its components can be precisely aligned with the height of the paper in the paper tray 3, ensuring that the paper can be fed smoothly. When the drive motor 6 fixedly connected to the top left end of the inner support 5 is turned on, the output end rotates, driving the paper tray 3 to rotate. The drive gear 7, which is fixedly connected to it, rotates synchronously. The driven gear 9, which is fixedly connected to the left side of the rotating roller 8, meshes with the drive gear 7. When the drive gear 7 rotates, the power is transmitted to the driven gear 9 through the meshing transmission between the gears, thereby driving the rotating roller 8 to rotate synchronously. When one end of the printing paper 10 in the paper tray 3 is introduced to the rotating roller 8, the rotating roller 8 gradually pulls the paper out of the paper tray 3 and conveys it to the printing area by means of the friction between the rotating roller 8 and the paper surface, thus realizing automatic paper feeding. In order to ensure the continuity of printing work, the automatic paper detection mechanism 2 is installed on the front side of the inner support 5. It can monitor the remaining amount of printing paper 10 in real time and judge the remaining amount of paper based on pressure sensing technology, so as to avoid printing interruption due to running out of paper and can complete the paper feeding task stably and efficiently.

[0034] Reference Figure 2 , Figure 4 and Figure 5 The automatic paper detection mechanism 2 includes two side legs 201. The bottom of the left and right sides of each side leg 201 is provided with a stroke groove 202. The bottom of each side leg 201 is rotatably connected to a rubber wheel 203. The left and right ends of the rubber wheel 203 are respectively rotatably connected to the inside of the two stroke grooves 202. Pressure monitoring plates 204 are fixedly connected to the middle of the left and right sides of each side leg 201. Both pressure monitoring plates 204 are electrically connected to multiple electric telescopic rods 4. The bottom of each pressure monitoring plate 204 is fixedly connected to a stroke sleeve 205. Springs 206 are provided inside each stroke sleeve 205. The bottom of each stroke sleeve 205 is fixedly connected to a collar 207. The two collars 207 are respectively sleeved on the left and right ends of the rubber wheel 203.

[0035] Specifically, the automatic paper detection mechanism 2 mainly consists of two side support legs 201. The bottom left and right sides of each side support leg 201 have travel grooves 202, which provide space for the rotation and movement of the rubber wheel 203. The left and right ends of the rubber wheel 203 are rotatably connected to the inside of the two travel grooves 202, allowing the rubber wheel 203 to rotate within the travel grooves 202 and move up and down within their range. When printing paper 10 is placed in the paper tray 3, the rubber wheel 203 will contact the surface of the printing paper 10. As the printing paper 10 is continuously consumed, its height will gradually decrease, and the rubber wheel 203 will move up and down with the printing paper 10. As the height decreases, the rollers move downward within the travel groove 202. Pressure monitoring plates 204 are fixedly connected to the middle of the left and right sides of the side support legs 201. The pressure monitoring plates 204 are electrically connected to multiple electric telescopic rods 4 and can sense pressure changes transmitted by the rubber rollers 203. When there is a large amount of printing paper 10, the rubber rollers 203 experience a greater upward supporting force, and the pressure detected by the pressure monitoring plates 204 is also greater. As the amount of printing paper 10 decreases, the rubber rollers 203 move downward, and the pressure detected by the pressure monitoring plates 204 gradually decreases. A travel sleeve 205 is fixedly connected to the bottom of the pressure monitoring plate 204, and the travel sleeve 205 has an internal structure... Spring 206 provides cushioning and elastic support. When the rubber wheel 203 moves up and down, spring 206 compresses or extends accordingly, allowing the pressure monitoring plate 204 to more accurately detect pressure changes. Simultaneously, spring 206 prevents the pressure monitoring plate 204 from being damaged by excessive impact. A collar 207 is fixedly connected to the bottom end of the stroke sleeve 205. The collar 207 is fitted onto the left and right ends of the rubber wheel 203, serving a connecting and fixing function, ensuring the relative position between the rubber wheel 203 and the stroke sleeve 205 is stable, allowing pressure to be accurately transmitted to the pressure monitoring plate. When the pressure detected by the pressure monitoring plate 204 on the measuring plate 204 decreases to a certain level, it indicates that the remaining amount of printing paper 10 is not much. At this time, the pressure monitoring plate 204 will transmit a signal to multiple electric telescopic rods 4. After receiving the signal, the electric telescopic rods 4 will adjust the height of the inner support 5 to ensure that the rotating roller 8 can better contact the remaining printing paper 10, ensuring normal paper feeding. At the same time, it can also trigger the alarm function of the printing machine to remind the user to replenish the printing paper 10 in time. It can accurately monitor the remaining amount of printing paper 10 in real time and adjust the working status of the paper feeding mechanism according to the situation to ensure the normal operation of the printing machine.

[0036] Reference Figures 1-4An observation window 11 is fixedly connected to the front left end of the cardboard box 3, and the rear end of the observation window 11 extends through the interior of the cardboard box 3; a handle 12 is fixedly connected to the front middle of the cardboard box 3, and the exterior of the handle 12 is finished with a frosted finish; triangular braces 13 are fixedly connected to the top of each of the two side support legs 201, and the rear sides of the two triangular braces 13 are fixedly connected to the front left and right ends of the inner bracket 5 respectively; a flashing indicator light 14 is fixedly connected to the front left end of the outer shell 1, and the flashing indicator light 14 is electrically connected to multiple pressure monitoring plates 204; an anti-slip groove 15 is provided on the exterior of the rotating roller 8, and the anti-slip groove 15 adopts a mesh cross-shaped design; the exterior of the rubber wheel 203 is finished with a frosted finish, and the left and right sides of the exterior of the rubber wheel 203 are chamfered.

[0037] Specifically, the observation window 11 on the front left side of the paper tray 3 extends through the interior of the paper tray 3. This allows for a direct view of the remaining paper 10 inside the paper tray 3, enabling users to check the paper level without opening the tray and prepare for refills in advance. This prevents printing interruptions due to running out of paper, improving work efficiency. The handle 12 on the front center of the paper tray 3 has a frosted finish. When the paper tray 3 needs to be pulled out or inserted into the outer casing 1, the frosted finish increases the friction between the hand and the handle 12, making operation more stable and convenient. The triangular braces 13 on the top of the two side legs 201 are fixedly connected to the front left and right ends of the inner support 5, respectively. Utilizing the stability principle of a triangle, the triangular braces 13 enhance the connection strength between the side legs 201 and the inner support 5, effectively reducing the wobbling of the side legs 201. The flashing indicator light 14 on the front left side of the outer casing 1 is electrically connected to multiple pressure monitoring plates 204. When the pressure monitoring plate 20... 4. When the remaining amount of printing paper 10 is low, a signal is transmitted to the flash indicator light 14. After receiving the signal, the flash indicator light 14 starts to flash, reminding the user to replenish the printing paper 10 in a conspicuous manner, so as to avoid affecting the normal operation of the printer due to insufficient paper. The anti-slip groove 15 on the outside of the rotating roller 8 adopts a mesh cross-shaped design. When the drive motor 6 drives the drive gear 7, and the driven gear 9 makes the rotating roller 8 rotate, the anti-slip groove 15 can increase the friction between the rotating roller 8 and the printing paper 10, reducing the paper slippage. The rubber wheel 203 adopts a frosted process on the outside, and both the left and right sides adopt a chamfered design. The frosted process increases the friction between the rubber wheel 203 and the surface of the printing paper 10, so that the rubber wheel 203 can move up and down better with the height change of the printing paper 10, accurately transmitting the pressure to the pressure monitoring plate 204. The chamfered design prevents the rubber wheel 203 from scratching the printing paper 10 during the movement, ensuring the integrity of the paper.

[0038] Working Principle: The front of the outer casing 1 is designed with a sliding paper tray 3, allowing users to easily load and unload the paper tray 3 containing printing paper 10, improving the convenience of paper replacement. In the power transmission of the paper feeding mechanism, multiple electric telescopic rods 4 are equidistantly fixedly connected to the top of the outer casing 1, and their output ends are all connected to the same inner support 5. The electric telescopic rods 4 can be extended or shortened according to actual needs, thereby flexibly adjusting the height of the inner support 5. When it is necessary to adapt to printing paper 10 of different thicknesses, or during equipment debugging, by adjusting the electric telescopic rods 4, the height of the inner support 5 and its components can be precisely aligned with the height of the paper in the paper tray 3, ensuring that the paper can be fed smoothly. The drive is fixedly connected to the top left end of the inner support 5. After the motor 6 is turned on, the output end rotates, driving the drive gear 7 fixedly connected to it to rotate synchronously. The driven gear 9 fixedly connected to the left side of the rotating roller 8 meshes with the drive gear 7. When the drive gear 7 rotates, the power is transmitted to the driven gear 9 through the meshing transmission between the gears, thereby driving the rotating roller 8 to rotate synchronously. When one end of the printing paper 10 in the paper tray 3 is introduced into the rotating roller 8, the rotating roller 8 gradually pulls the paper out of the paper tray 3 and conveys it to the printing area by means of the friction between the rotating roller 8 and the paper surface, realizing the automatic feeding of the paper. In order to ensure the continuity of printing work, the automatic paper detection mechanism 2 is installed on the front side of the inner support 5, which can monitor the remaining quantity of printing paper 10 in real time.

[0039] Furthermore, the left and right bottom sides of the side support legs 201 are provided with travel grooves 202, which provide space for the rotation and movement of the rubber wheel 203. The left and right ends of the rubber wheel 203 are respectively rotatably connected to the inside of the two travel grooves 202, so that the rubber wheel 203 can rotate within the travel grooves 202 and can also move up and down within its range. When printing paper 10 is placed in the paper tray 3, the rubber wheel 203 will contact the surface of the printing paper 10. As the printing paper 10 is continuously consumed, its height will gradually decrease, and the rubber wheel 203 will move up and down with the printing paper. As the height of the paper 10 decreases, it moves downward within the travel groove 202. Pressure monitoring plates 204 are fixedly connected to the middle of the left and right sides of the side support legs 201. The pressure monitoring plates 204 are electrically connected to multiple electric telescopic rods 4 and can sense changes in pressure transmitted by the rubber wheel 203. When there is a large amount of printing paper 10, the rubber wheel 203 experiences a greater upward supporting force, and the pressure detected by the pressure monitoring plate 204 is also greater. As the amount of printing paper 10 decreases, the rubber wheel 203 moves downward, and the pressure detected by the pressure monitoring plate 204 gradually decreases. The bottom of the pressure monitoring plate 204... A travel sleeve 205 is fixedly connected to the rubber wheel 203. A spring 206 is installed inside the travel sleeve 205. The spring 206 provides cushioning and elastic support. When the rubber wheel 203 moves up and down, the spring 206 compresses or extends accordingly, allowing the pressure monitoring plate 204 to more accurately detect pressure changes. Simultaneously, the spring 206 prevents the pressure monitoring plate 204 from being damaged by excessive impact. A collar 207 is fixedly connected to the bottom end of the travel sleeve 205. The collar 207 is fitted onto the left and right ends of the rubber wheel 203, respectively. The rubber wheel 203 and the travel sleeve 205 are connected and fixed to ensure that the relative position between them is stable, so that the pressure can be accurately transmitted to the pressure monitoring plate 204. When the pressure detected by the pressure monitoring plate 204 drops to a certain level, it means that there is not much printing paper 10 left. At this time, the pressure monitoring plate 204 will transmit a signal to multiple electric telescopic rods 4. After receiving the signal, the electric telescopic rods 4 will adjust the height of the inner support 5 to ensure that the rotating roller 8 can better contact the remaining printing paper 10 and ensure the normal feeding of the paper.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paper feeding mechanism for a music notation machine, comprising a housing (1), characterized in that: A paper box (3) is slidably connected to the front side of the outer shell (1). Printing paper (10) is placed inside the paper box (3). Multiple electric telescopic rods (4) are fixedly connected at equal intervals to the top of the outer shell (1). The output ends of the multiple electric telescopic rods (4) are all fixedly connected to the same inner bracket (5). A drive motor (6) is fixedly connected to the top left end of the inner bracket (5). A drive gear (7) is fixedly connected to the output end of the drive motor (6). A rotating roller (8) is rotatably connected inside the inner bracket (5). A driven gear (9) is fixedly connected to the outer left side of the rotating roller (8). The drive gear (7) and the driven gear (9) are meshed. An automatic paper detection mechanism (2) is provided on the front side of the inner bracket (5). The automatic paper detection mechanism (2) is used to monitor the remaining quantity of printing paper (10) in real time.

2. The paper feeding mechanism for a music notation machine according to claim 1, characterized in that: The automatic paper detection mechanism (2) includes two side legs (201). The bottom of the left and right sides of each side leg (201) is provided with a stroke groove (202). The bottom end of each side leg (201) is rotatably connected to a rubber wheel (203). The left and right ends of the rubber wheel (203) are respectively rotatably connected to the inside of the two stroke grooves (202). The middle of the left and right sides of each side leg (201) is fixedly connected to a pressure monitoring plate (204). Both pressure monitoring plates (204) are electrically connected to multiple electric telescopic rods (4). The bottom of each pressure monitoring plate (204) is fixedly connected to a stroke sleeve (205). The inside of each stroke sleeve (205) is provided with a spring (206). The bottom end of each stroke sleeve (205) is fixedly connected to a collar (207). The two collars (207) are respectively sleeved on the left and right ends of the rubber wheel (203).

3. The paper feeding mechanism for a music notation machine according to claim 1, characterized in that: An observation window (11) is fixedly connected to the front left end of the cardboard box (3), and the rear end of the observation window (11) extends through the interior of the cardboard box (3).

4. The paper feeding mechanism for a music notation machine according to claim 1, characterized in that: A handle (12) is fixedly connected to the middle of the front side of the cardboard box (3), and the outside of the handle (12) is frosted.

5. The paper feeding mechanism for a music notation machine according to claim 2, characterized in that: The top of each of the two side legs (201) is fixedly connected to a triangular brace (13), and the rear sides of the two triangular braces (13) are respectively fixedly connected to the left and right ends of the front side of the inner bracket (5).

6. The paper feeding mechanism for a music notation machine according to claim 1, characterized in that: A flashing indicator light (14) is fixedly connected to the front left end of the housing (1), and the flashing indicator light (14) is electrically connected to multiple pressure monitoring plates (204).

7. The paper feeding mechanism for a music notation machine according to claim 1, characterized in that: The rotating roller (8) has an anti-slip groove (15) on its outside, and the anti-slip groove (15) adopts a mesh cross-shaped design.

8. The paper feeding mechanism for a music notation machine according to claim 2, characterized in that: The outer surface of the rubber wheel (203) is treated with a frosted finish, and both the left and right sides of the outer surface of the rubber wheel (203) are chamfered.

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