Paper feeding mechanism and printing equipment

Abstract

The utility model particularly discloses a paper feeding mechanism and printing equipment, and belongs to the technical field of paper transmission. Comprising a paper supply disc, a paper lifting disc and a buffer assembly, the paper lifting disc is arranged in the mounting groove, one end of the paper lifting disc is rotationally connected with the side wall of the mounting groove, and an elastic piece is arranged between the other end of the paper lifting disc and the paper supply disc and used for driving the paper lifting disc to rotate back to the paper supply disc; the buffer assembly comprises a rack and a damping device, the rack is connected to the side wall of the mounting groove, the damping device is connected to the paper lifting disc, the damping device is provided with a gear meshed with the rack, and the damping device is used for slowing down rotation of the paper lifting disc back to the paper supply disc. When the paper lifting disc rotates back to the paper supply disc, the gear moves along the rack. Due to the fact that the damping device can slow down the moving speed of the gear and the rack, the rotating speed of the paper lifting disc opposite to the paper feeding disc is slowed down, the paper lifting disc is prevented from impacting the paper feeding disc and other parts when the elastic piece is released from the compressed state, damage to the parts is avoided, and noise generated by impacting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of paper transmission, in particular to a paper feeding mechanism and printing equipment. Background Art

[0002] In the related art, the paper lifting tray of the paper feeding mechanism can adjust its own tilt angle. An elastic member is provided between the paper supply tray and the paper lifting tray. By providing a limit assembly and the elastic member to abut against the upper and lower sides of the movable end of the paper lifting tray, the height of one end of the paper lifting tray is limited, thereby adjusting the tilt angle of the paper lifting tray. Currently, when the user lifts the paper supply tray to take paper, the movable end of the paper lifting tray is separated from the limit assembly. Under the elastic force of the elastic member, the movable end of the paper lifting tray hits the paper supply tray and other components, which is likely to generate noise and easily cause structural damage to the paper lifting tray and the paper supply tray. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a paper feeding mechanism that avoids the collision of the paper lifting tray with other components, avoids damage to the components, and reduces the generation of noise.

[0004] The utility model also provides a printing device having the above-mentioned paper feeding mechanism.

[0005] According to a first aspect of the present utility model, a paper feeding mechanism is provided, comprising: a paper supply tray, a paper lifting tray and a buffer assembly, wherein the paper supply tray is provided with a mounting groove; the paper lifting tray is arranged in the mounting groove, one end of the paper lifting tray is rotatably connected to the side wall of the mounting groove, and an elastic member is provided between the other end and the paper supply tray, and the elastic member is used to drive the paper lifting tray to rotate back toward the paper supply tray; the buffer assembly comprises a rack and a damping device, the rack is connected to the side wall of the mounting groove, the damping device is connected to the paper lifting tray, the damping device is provided with a gear meshing with the rack, and the damping device is used to slow down the rotation of the paper lifting tray back toward the paper supply tray.

[0006] A paper feeding mechanism according to an embodiment of the present invention has at least the following beneficial effects:

[0007] In this embodiment, one end of the paper lift tray is rotatably connected to the side wall of the mounting slot, and an elastic member is provided between the other end and the paper supply tray. This allows the paper lift tray to rotate away from the paper supply tray when the elastic member is compressed and released. A gear is provided via a damping device, and the gear meshes with a rack. When the paper lift tray rotates away from the paper supply tray, the gear moves along the rack. Because the damping device can slow the movement of the gear and rack, and thus the speed at which the paper lift tray rotates away from the paper supply tray, the paper lift tray is prevented from striking components such as the paper supply tray when the elastic member is released from its compressed state, thereby preventing damage to components and noise generated by impact.

[0008] According to some embodiments of the present invention, the mounting groove is provided with a groove along the side wall in the width direction thereof, the paper lifting plate is provided with a rotating shaft corresponding to the groove, the rotating shaft is passed through the groove, and can rotate relative to the groove, the paper lifting plate is provided with a guide rod at one end away from the rotating shaft, the paper lifting plate can drive the guide rod to move back toward the paper supply tray, the paper supply tray is provided with a limiting plate located on the upper side of the mounting groove, and the limiting plate can abut against the guide rod to limit the paper lifting plate.

[0009] According to some embodiments of the present invention, the rack is provided between the groove and the limiting plate, and the rack is an arc rack centered on the rotating shaft.

[0010] According to some embodiments of the present invention, the rack is protruding from a side wall of the mounting groove, and gear teeth are formed on a side of the rack facing the guide rod.

[0011] According to some embodiments of the present invention, the paper feeding mechanism includes two buffer components, each buffer component includes the rack and the damping device, the two racks are respectively arranged on the two side walls of the installation groove along its width direction, the two damping devices are respectively connected to the two ends of the paper lifting plate along the width direction of the installation groove, and the two damping devices are connected to the two racks in a one-to-one correspondence.

[0012] According to some embodiments of the present invention, the rack is integrally formed with the paper supply tray.

[0013] According to some embodiments of the present invention, the paper feeding mechanism includes a limiting assembly, which includes a limiting member and a driving assembly. The driving assembly is used to drive the limiting member to rotate and abut against the guide rod to prevent the paper lifting tray from rotating away from the paper supply tray or push the paper lifting tray to rotate toward the paper supply tray.

[0014] According to some embodiments of the present invention, the paper feeding mechanism includes a mounting seat, the mounting seat is located on one side of the paper supply tray, and the driving assembly is installed on the mounting seat.

[0015] According to a second aspect of the present invention, a printing device is provided, comprising the paper feeding mechanism disclosed in the first aspect of the present invention.

[0016] A printing device according to an embodiment of the present invention has at least the following beneficial effects:

[0017] The printing device adopts the paper feeding mechanism of the first embodiment. The paper feeding mechanism is connected to the side wall of the mounting groove at one end of the paper lifting tray, and an elastic member is provided between the other end and the paper supply tray, so that when the elastic member is compressed and released, the paper lifting tray rotates away from the paper supply tray. A gear is provided through a damping device, and the gear is engaged with a rack. When the paper lifting tray rotates away from the paper supply tray, the gear moves along the rack. Since the damping device can slow down the movement speed of the gear and the rack, and thus slow down the speed at which the paper lifting tray rotates away from the paper supply tray, it is prevented from hitting the paper lifting tray and other components when the elastic member is released from the compressed state, thereby avoiding damage to components and avoiding noise generated by collision.

[0018] According to some embodiments of the present invention, the paper feeding mechanism includes a limiting assembly and a mounting seat, the limiting assembly includes a limiting part and a driving assembly, the driving assembly is used to drive the limiting part to rotate, and the driving assembly is installed at the rear end of the mounting seat along the front and rear direction of the paper feeding mechanism.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a structural diagram of an embodiment of a paper feeding mechanism of the present utility model;

[0022] Figure 2 This is an exploded view of an embodiment of a paper feeding mechanism of the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of part A in the middle;

[0024] Figure 4 for Figure 2 A partial enlarged view of part B in the middle;

[0025] Figure 5 This is a top schematic diagram of a paper lifting tray and a paper supply tray in an embodiment of a paper feeding mechanism of the present invention;

[0026] Figure 6 for Figure 5 Cross-sectional view of the middle CC area;

[0027] Figure 7 This is a structural schematic diagram of a damping device in an embodiment of a paper feeding mechanism of the present utility model;

[0028] Figure 8This is a side view of a paper lifting tray and a paper supply tray in an embodiment of a paper feeding mechanism of the present invention;

[0029] Figure 9 This is a structural schematic diagram of a paper lifting tray and a paper supply tray in an embodiment of a paper feeding mechanism of the present invention;

[0030] Figure 10 for Figure 9 A partial enlarged view of the D part in the middle;

[0031] Figure 11 This is a schematic diagram of a first state of a limiting member and a guide rod in an embodiment of a paper feeding mechanism of the present invention;

[0032] Figure 12 This is a schematic diagram of the second state of a limiting member and a guide rod in an embodiment of a paper feeding mechanism of the present invention.

[0033] Reference numerals:

[0034] Paper feeding mechanism 10;

[0035] Paper supply tray 100; mounting slot 110; groove 111; limiting plate 112;

[0036] Paper lifting tray 200; rotating shaft 210; guide rod 220;

[0037] elastic member 300;

[0038] Buffer assembly 400; rack 410; damping device 420; gear 421;

[0039] Limiting assembly 500; limiting member 510; driving assembly 520; connecting rod 530;

[0040] Mounting seat 600. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by up, down, inside, outside, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] In the related art, the paper lifting tray of the paper feeding mechanism can adjust its own inclination angle. An elastic member is provided between the paper supply tray and the paper lifting tray, and a limit assembly and the elastic member are provided to abut against the upper and lower sides of the movable end of the paper lifting tray to limit the height of one end of the paper lifting tray, thereby adjusting the inclination angle of the paper lifting tray. At present, when the user lifts the paper supply tray to take paper, the movable end of the paper lifting tray disengages from the limit assembly, and under the elastic force of the elastic member, the movable end of the paper lifting tray hits the paper supply tray and other components, causing the structure of the paper lifting tray and the paper supply tray to be easily damaged, and generating noise. And when the user improperly presses down the paper lifting tray and releases it, under the action of the elastic member, the movable end of the paper lifting tray hits the limit assembly and other components, causing the structure of the components to be damaged and generating noise.

[0046] To this end, some embodiments of the present invention provide a paper feeding mechanism 10, specifically referring to the accompanying drawings of the specification. Figures 1 to 11 The paper feeding mechanism 10 will be described.

[0047] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the paper feeding mechanism 10 can be applied to a printing device, and the paper feeding mechanism 10 can feed paper for the printing device. The paper feeding mechanism 10 includes a paper supply tray 100, a paper lifting tray 200 and a buffer assembly 400. The paper supply tray 100 is provided with a mounting groove 110, and the paper lifting tray 200 is located in the mounting groove 110. One end of the paper lifting tray 200 is rotatably connected to the side wall of the mounting groove 110, and an elastic member 300 is provided between the other end of the paper lifting tray 200 and the paper supply tray 100. Both ends of the elastic member 300 abut against the paper supply tray 100 and the paper lifting tray 200. The elastic member 300 is used to drive the paper lifting tray 200 to rotate away from the paper supply tray 100. The elastic member 300 can support the paper lifting tray 200 so that the paper lifting tray 200 always maintains a tendency to rotate in a direction away from the paper supply tray 100. It is understandable that by adjusting the elastic force of the elastic member 300 , the tilt angle of the paper lifting tray 200 can be adjusted, thereby adjusting the paper feeding force of the paper feeding mechanism 10 .

[0048] It is understood that the paper feeding mechanism 10 can adjust the paper feeding force according to the type of paper, that is, adjust the inclination angle of the paper lifting tray 200, so that the paper feeding mechanism 10 can adapt to the feeding of different types of paper, thereby improving the applicability of the paper feeding mechanism 10. Different types of paper can have different thicknesses, hardnesses, or surface properties, which are not limited in this application.

[0049] It is understandable that when the elastic member 300 is compressed and released instantly, due to the elastic force of the elastic member 300, the paper lifting tray 200 rotates at a certain speed in the direction away from the paper supply tray 100, which causes the paper lifting tray 200 to hit other components, making the paper lifting tray 200 and other components easily damaged, and causing noise due to the collision. Figure 7 、 Figure 9 and Figure 10 In some embodiments of the present invention, the buffer assembly 400 includes a rack 410 and a damping device 420. The damping device 420 includes a gear 421 that meshes with the rack 410. The damping device 420 is capable of slowing the movement of the gear 421 along the rack 410. The rack 410 is connected to the sidewall of the mounting slot 110, and the damping device 420 is connected to the paper lift tray 200. When the paper lift tray 200 rotates relative to the paper supply tray 100, the gear 421 of the damping device 420 moves along the rack 410. Because the damping device 420 slows the movement of the gear 421 along the rack 410, it also slows the rotation of the paper lift tray 200 away from the paper supply tray 100. This prevents the paper lift tray 200 from rotating too quickly when the elastic member 300 is compressed and then released instantly. This prevents the paper lift tray 200 from colliding with other components, thereby preventing damage to components and ensuring smoother rotation of the paper lift tray 200 relative to the paper supply tray 100. At the same time, noise caused by collision is avoided.

[0050] It is understood that the damping device 420 is further provided with a damping medium, which can slow down the rotation speed of the gear 421, thereby achieving the damping device 420 being able to slow down the speed at which the gear 421 moves along the rack 410. The damping medium can be a spring, oil, friction plate, etc. The damping medium can be set according to actual production applications and is not limited herein.

[0051] Reference Figure 2 、 Figure 3 and Figure 4In some embodiments of the present invention, the mounting slot 110 is provided with a groove 111 along the sidewall thereof in the width direction, and the paper lift tray 200 is provided with a rotating shaft 210. The rotating shaft 210 corresponds to the groove 111, is disposed through the groove 111, and is capable of rotating relative to the groove 111. As the rotating shaft 210 rotates relative to the groove 111, one end of the paper lift tray 200 is rotatably connected to the sidewall of the mounting slot 110, so that the paper lift tray 200 can rotate relative to the paper supply tray 100 to adjust the tilt angle of the paper lift tray 200.

[0052] Reference Figure 8 、 Figure 9 and Figure 10 In some embodiments of the present invention, a guide rod 220 is provided at one end of the paper lifting tray 200 away from the rotating shaft 210. When the paper lifting tray 200 rotates in a direction away from the paper supply tray 100, the paper lifting tray 200 drives the guide rod 220 to move in a direction away from the paper supply tray 100. The paper supply tray 100 is provided with a limit plate 112, and along the height direction of the paper supply tray 100, the limit plate 112 is located on the upper side of the mounting groove 110. The limit plate 112 can abut against the guide rod 220, and the limit plate 112 is used to limit the height of the paper lifting tray 200 relative to the paper supply tray 100, thereby preventing the paper lifting tray 200 from being excessively lifted relative to the paper supply tray 100.

[0053] It is understood that when the elastic member 300 is in a compressed state and is momentarily released, the paper lift tray 200 rotates away from the paper supply tray 100, thereby driving the guide rod 220 toward the limit plate 112. Because the damping device 420 slows the rotation of the paper lift tray 200 away from the paper supply tray 100, and thus slows the movement of the guide rod 220 toward the limit plate 112, collision and damage between the guide rod 220 and the limit plate 112 are avoided. At the same time, noise generated by collision between the guide rod 220 and the limit plate 112 is avoided, thereby improving the user experience.

[0054] It is understandable that the elastic member 300 can be an elastic structure such as a spring or a bellows, and the structure and material of the elastic member 300 can be selected according to actual production applications, and this application does not limit this.

[0055] Reference Figure 5 and Figure 6In some embodiments of the present invention, a rack 410 is disposed between the groove 111 and the limiting plate 112 along the length of the paper feed tray 100. The rack 410 is an arc rack 410 centered on the rotating shaft 210. The extending direction of the arc rack 410 is the same as the rotation direction of the paper lift tray 200, so that the gear 421 moves along the rack 410 and the rotation of the paper lift tray 200 can be synchronized, thereby avoiding meshing deviation and misalignment between the rack 410 and the gear 421 during the rotation of the paper lift tray 200, thereby ensuring smooth rotation of the paper lift tray 200 and improving the stability and reliability of the paper feeding mechanism 10.

[0056] Reference Figure 6 、 Figure 8 and Figure 9 In some embodiments of the present invention, the rack 410 is protruded from the side wall of the mounting groove 110. During production, the rack 410 is directly set on the side wall of the mounting groove 110, and there is no need to set a groove on the paper supply tray 100 to accommodate the rack 410. This facilitates the arrangement of the rack 410 on the paper supply tray 100, facilitates the production of the paper supply tray 100, and reduces the difficulty of processing the paper supply tray 100. Gear teeth are formed on the side of the rack 410 facing the guide rod 220, that is, along the length direction of the paper supply tray 100, the gear teeth are located on the side of the rack 410 facing the guide rod 220, so that the meshing state of the gear 421 and the gear teeth can be observed from one end of the guide rod 220, which facilitates the installation and disassembly of the paper lifting tray 200 and the paper supply tray 100, facilitates the repair and maintenance of the gear 421 and the rack 410, and simplifies the maintenance process of the gear 421 and the rack 410.

[0057] Reference Figure 8 In some embodiments of the present invention, the paper feeding mechanism 10 is provided with two buffer assemblies 400, and each buffer assembly 400 is respectively provided with a rack 410 and a damping device 420. Along the width direction of the mounting groove 110, the two racks 410 are respectively provided on the two side walls of the mounting groove 110. Along the width direction of the paper lifting tray 200, the damping devices 420 are respectively installed at both ends of the paper lifting tray 200. The two damping devices 420 are connected to the two racks 410 in a one-to-one correspondence. By providing two buffer assemblies 400, the vibration and impact generated by the paper lifting tray 200 during movement can be more comprehensively reduced, thereby improving the stability of the paper feeding mechanism 10. By providing the two racks 410 respectively on the two side walls along the width direction of the mounting groove 110, the overall force of the paper lifting tray 200 is made more uniform during the rotation process, avoiding uneven force during the rotation of the paper lifting tray 200 and causing deflection, optimizing the transmission performance, and improving the stability and reliability of the paper feeding mechanism 10. At the same time, by providing two buffer components 400 , the load during the rotation of the paper lifting tray 200 can be dispersed, thereby avoiding excessive load on one buffer component 400 and reducing the risk of failure of the buffer component 400 .

[0058] Reference Figure 9 and Figure 10 In some embodiments of the present invention, the rack 410 is integrally formed with the paper supply tray 100, reducing the assembly clearance between the rack 410 and the paper supply tray 100. This ensures the precise position and angle of the rack 410, thereby ensuring the transmission accuracy and reliability of the buffer assembly 400. By integrally forming the rack 410 with the paper supply tray 100, the production process is simplified, the assembly process and the required labor costs are reduced, production efficiency is improved, and the production cycle is shortened.

[0059] It can be understood that the damping device 420 and the paper lifting plate 200 can be connected by bolts so that the damping device 420 is installed on the paper lifting plate 200. It can also be connected by pins, rivets and other connection methods. It can be selected according to actual production applications, and this application does not limit it here.

[0060] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the paper feeding mechanism 10 is further provided with a limiting assembly 500, which includes a limiting member 510 and a driving assembly 520. The limiting member 510 abuts against the guide rod 220, and the driving assembly 520 is used to drive the limiting member 510 to rotate.

[0061] Reference Figure 11 In some embodiments of the present invention, when the limiting assembly 500 is in the first state, the limiting member 510 is located on the side of the guide rod 220 away from the paper supply tray 100 along the height direction of the paper supply tray 100 to prevent the paper lifting tray 200 from rotating in the direction away from the paper supply tray 100. By respectively arranging the limiting members 510 and the elastic member 300 on the upper and lower sides of the paper lifting tray 200 along the height direction of the paper supply tray 100, the paper lifting tray 200 is limited to maintain a certain inclination angle, thereby enabling the paper feeding mechanism 10 to maintain a certain paper feeding force, ensuring the stable paper feeding of the paper feeding mechanism 10 and ensuring the reliability of the paper feeding mechanism 10. The limiting member 510 is driven to rotate by the driving assembly 520 to adjust the inclination angle of the paper lifting tray 200, thereby adjusting the paper feeding force of the paper feeding mechanism 10. The driving assembly 520 can adjust the paper feeding force of the paper feeding mechanism 10 so that the paper feeding mechanism 10 is suitable for conveying different types of paper, thereby improving the applicability and flexibility of the paper feeding mechanism 10. At the same time, the paper feeding force can be accurately adjusted without manual adjustment, thereby improving production efficiency.

[0062] It is understood that when the limiter 510 and the guide rod 220 are in the first state, if the user improperly presses down the paper lift tray 200 and releases it instantly, the elastic force of the elastic member 300 causes the paper lift tray 200 to have an impact force in the direction away from the paper supply tray 100. Since the damping device 420 slows down the speed of the paper lift tray 200 rotating away from the paper supply tray 100, it also slows down the speed of the guide rod 220 moving toward the limiter 510, thus preventing the guide rod 220 from hitting the limiter 510, avoiding damage to the guide rod 220 and the limiter 510, and improving the service life of the components. At the same time, it avoids noise caused by collision and avoids damage to the paper feeding mechanism 10 caused by improper user operation.

[0063] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the paper feed mechanism 10 further includes a mounting base 600 located on one side of the paper supply tray 100, and the drive assembly 520 is mounted on the mounting base 600. A paper storage cavity is provided below the paper supply tray 100. It is understood that the paper feed mechanism 10 feeds paper to the printing device, and the printing device receives and delivers the printed paper after printing. The delivered paper is temporarily stored in the paper storage cavity, and the user removes the printed paper from the paper storage cavity.

[0064] Reference Figure 2 It is understood that one end of the paper supply tray 100 is rotatably connected to the mounting base 600 along the length of the paper supply tray 100, so that the paper supply tray 100 can be rotated in a direction toward or away from the mounting base 600. By allowing the paper supply tray 100 to rotate in a direction away from the mounting base 600, the user can obtain a wider field of view and a larger paper picking space; after removing paper, the user rotates the paper supply tray 100 toward the mounting base 600 to return the paper supply tray 100 to its original position.

[0065] Reference Figure 11 and Figure 12It is understood that when the paper supply tray 100 rotates in a direction away from the mounting base 600, the guide rod 220 of the paper lifting tray 200 is driven to move in a direction away from the mounting base 600, and the guide rod 220 disengages from the limiter 510. At this time, the limiter 510 loses its ability to limit the guide rod 220, and the limiter assembly 500 and the guide rod 220 are in the second state. When the user lifts the paper supply tray 100 to remove paper, causing the guide rod 220 to dislocate, that is, the limiter 510 and the guide rod 220 enter the second state from the first state, the driving assembly 520 can drive the limiter 510 to rotate so that the limiter 510 rotates to the side of the guide rod 220 away from the paper supply tray 100, and the limiter 510 contacts the guide rod 220, so that the limiter 510 can be positioned again in a position to limit the guide rod 220, so that the guide rod 220 is once again controlled by the limiter 510. When the user finishes taking paper and rotates the paper supply tray 100 to the initial position, the driving component 520 drives the limit member 510 to rotate in the direction close to the paper supply tray 100, so that the limit member 510 drives the guide rod 220 to move in the direction close to the paper supply tray 100, and then the paper lifting tray 200 rotates in the direction close to the paper supply tray 100, realizing automatic resetting of the paper lifting tray 200, and restoring the guide rod 220 from the second state to the first state.

[0066] It is understood that the rotation of the limiter 510 is driven by the drive assembly 520, so that after the user lifts the paper feed tray 100 to remove paper, the limiter 510 and the guide rod 220 can be automatically reset, thereby automatically resetting the tilt angle of the paper lift tray 200, ensuring the stability and reliability of the paper feeding mechanism 10, reducing the risk of malfunction during the user's paper removal process, eliminating the need for manual reset, and improving production efficiency. At the same time, it can provide users with a better user experience.

[0067] It is understandable that when the user lifts the paper supply tray 100 to take paper, the guide rod 220 disengages from the limiting member 510, and the elastic member 300 is instantly released from the compressed state. The elastic force of the elastic member 300 causes the paper lifting tray 200 to have an impact force in the direction away from the paper supply tray 100, so that the guide rod 220 has an impact force in the direction close to the limiting plate 112 of the paper supply tray 100. Since the damping device 420 slows down the speed of the paper lifting tray 200 rotating in the direction away from the paper supply tray 100, the speed of the guide rod 220 moving toward the limiting plate 112 is slowed down, thereby avoiding the collision between the guide rod 220 and the limiting plate 112, and avoiding damage to the paper lifting tray 200 and the paper supply tray 100. At the same time, the noise generated by the collision between the guide rod 220 and the limiting plate 112 is avoided, thereby improving the user experience.

[0068] Reference Figure 1 and Figure 2In some embodiments of the present invention, the drive assembly 520 is mounted at the rear end of the mounting base 600 along the front-to-back direction of the paper feeding mechanism 10. It is understood that when a user is using the paper feeding mechanism 10, the front end of the paper feeding mechanism 10 along the front-to-back direction is the end closest to the user. Since the drive assembly 520 is mounted at the rear end of the mounting base 600, that is, the drive assembly 520 is located at the end away from the user, the impact of the noise of the drive assembly 520 on the user is reduced, thereby improving the user experience and comfort.

[0069] Reference Figure 2 In some embodiments of the present invention, two limit members 510 may be provided, and the two limit members 510 may be spaced apart and connected by a connecting rod 530, thereby realizing synchronous rotation of the two limit members 510. The driving assembly 520 may be connected to the connecting rod 530 to drive the two limit members 510 to rotate. Correspondingly, the guide rod 220 may be passed through the paper lifting tray 200, and the two ends of the guide rod 220 may respectively protrude from the two ends of the paper lifting tray 200, and the two limit members 510 may respectively abut against the end portions of the corresponding guide rods 220, so that the two ends of the guide rod 220 and the paper lifting tray 200 are subjected to even force, thereby reducing the risk of the guide rod 220 being broken due to stress concentration, and improving the stability of the paper lifting tray 200.

[0070] It is understandable that the driving mechanism can be a structure of a turbine transmission motor combined with a transmission gear 421, or a driving structure of a motor, a cylinder, etc. combined with other mechanical components. It can be selected and set according to actual application, and this application does not limit it here.

[0071] An embodiment of the present invention further provides a printing device, comprising the paper feeding mechanism 10 of the above embodiment.

[0072] Since the printing device adopts all the technical solutions of the paper feeding mechanism 10 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0073] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paper feeding mechanism, characterized in that: include: A paper supply tray provided with a mounting slot; A paper lifting tray is provided in the mounting slot, one end of the paper lifting tray is rotatably connected to the side wall of the mounting slot, and an elastic member is provided between the other end and the paper supply tray, and the elastic member is used to drive the paper lifting tray to rotate away from the paper supply tray; The buffer assembly includes a rack and a damping device, wherein the rack is connected to the side wall of the mounting groove, the damping device is connected to the paper lifting tray, and the damping device is provided with a gear meshing with the rack. The damping device is used to slow down the rotation of the paper lifting tray away from the paper supply tray.

2. The paper feeding mechanism according to claim 1, wherein: The mounting slot is provided with a groove on its side wall in the width direction, and the paper lifting tray is provided with a rotating shaft corresponding to the groove. The rotating shaft is passed through the groove and can rotate relative to the groove. A guide rod is provided at one end of the paper lifting tray away from the rotating shaft, and the paper lifting tray can drive the guide rod to move back toward the paper supply tray. The paper supply tray is provided with a limiting plate located on the upper side of the mounting slot, and the limiting plate can abut against the guide rod to limit the paper lifting tray.

3. The paper feeding mechanism according to claim 2, wherein: The rack is arranged between the groove and the limiting plate, and the rack is an arc rack centered on the rotating shaft.

4. The paper feeding mechanism according to claim 2, wherein: The rack is protrudingly formed on the side wall of the mounting groove, and gear teeth are formed on a side of the rack facing the guide rod.

5. The paper feeding mechanism according to claim 1, wherein: The paper feeding mechanism includes two buffer components, each of which includes the rack and the damping device. The two racks are respectively arranged on the two side walls of the installation groove along its width direction, and the two damping devices are respectively connected to the two ends of the paper lifting plate along the width direction of the installation groove. The two damping devices are connected to the two racks in a one-to-one correspondence.

6. The paper feeding mechanism according to claim 1, characterized in that: The rack is integrally formed with the paper feed tray.

7. The paper feeding mechanism according to claim 2, characterized in that: The paper feeding mechanism includes a limiting assembly, which includes a limiting part and a driving assembly. The driving assembly is used to drive the limiting part to rotate and abut against the guide rod to prevent the paper lifting tray from rotating away from the paper supply tray or push the paper lifting tray to rotate toward the paper supply tray.

8. The paper feeding mechanism according to claim 7, characterized in that: The paper feeding mechanism comprises a mounting seat, the mounting seat is located on one side of the paper feeding tray, and the driving assembly is mounted on the mounting seat.

9. A printing device, characterized in that: The invention comprises the paper feeding mechanism according to any one of claims 1 to 8.

10. The printing device according to claim 9, characterized in that The paper feeding mechanism includes a limiting assembly and a mounting seat. The limiting assembly includes a limiting part and a driving assembly. The driving assembly is used to drive the limiting part to rotate. Along the front and rear direction of the paper feeding mechanism, the driving assembly is installed at the rear end of the mounting seat.

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