High-capacity printer paper feeding device

Abstract

The utility model relates to a high-capacity printer paper feeding device, which is characterized by comprising a paper bin, a lifting paper feeding platform, a power mechanism, a pickup roller anti-abrasion mechanism and a control system, wherein the lifting paper feeding platform is horizontally hoisted in the paper bin through four steel wire ropes; the power mechanism is installed on the left side face of the paper bin and connected with the four table corners of the lifting paper feeding platform through steel wire ropes, and the steel wire ropes steer through pulleys installed at the four corners of the upper face of the paper bin so that the steel wire ropes can vertically hoist the lifting paper feeding platform. The pickup roller anti-abrasion mechanism is mounted on the lifting paper feeding platform and corresponds to a pickup roller of the printer; a controller of the control system is installed on the right side of the front face of the paper bin and connected with the power mechanism through a wire. The paper supply box is large in capacity, the number of times of manual paper supplement can be reduced, multiple paper bins with complex structures do not need to be arranged for paper supply of the printer, and the technical problems that a single paper supply box of the shared printer is small in capacity, and multiple paper supply boxes are complex in structure are solved.

Description

Technical Field

[0001] The utility model belongs to the field of office printing equipment and relates to a large-capacity paper feeding device for a printer. Background Art

[0002] With the development of electronic and Internet technologies, printing is not only widely used in office scenarios, but also plays a very important role in various scenarios such as mobile office, tourism, certificate handling, and student homework. The emergence of shared printers can fully meet these printing scenarios and printing needs. Shared printers save the labor service cost and the equipment procurement cost of users, and can print in public places, providing great convenience for users. However, the original paper trays of printers currently used in shared printers generally have a small capacity. Especially during the peak usage period, service personnel need to add paper frequently, which not only reduces the working efficiency of shared printers, but also increases the labor cost of services. If the paper runs out during printing due to untimely paper addition, the user experience will be greatly reduced.

[0003] Currently, common printers adopt the bottom paper feeding method: the paper is placed in the paper tray, and the driving mechanism of the paper feeder drives the paper feed roller to move in the vertical direction. When the paper feed roller contacts the paper, the paper feed roller rotates to drive the paper into the printer. Since an elastic sheet is installed at the bottom of the paper tray, as the paper is used, under the elastic force of the elastic sheet, the remaining paper is lifted to ensure that the paper is always within the limit where the paper feed roller can work normally, so that the printer can feed paper normally. Since the height that the elastic sheet can lift is limited, the paper feeding capacity of traditional printers is generally below 250 sheets. Large printers use multiple paper trays to meet the demand for longer paper supply. However, due to the complex technology, large structure, and high cost of multi-paper-tray paper feeding, it is not suitable for large-scale promotion and use in shared printers. Therefore, there is an urgent need to develop a large-capacity paper feeding device for shared printers to meet the long-term paper supply demand of shared printers. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a large-capacity paper feeding device for a printer, and solve the technical problems of small capacity of a single paper tray of a shared printer and complex structure of multiple paper trays.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: A large-capacity paper feeding device for a printer, comprising a paper bin, a lifting paper feeding platform, a power mechanism, a paper rubbing wheel anti-wear mechanism, and a control system; wherein the lifting paper feeding platform is horizontally hoisted in the paper bin by four steel wires; the power mechanism is installed on the left side of the paper bin, and is connected to the four corners of the lifting paper feeding platform through steel wires, and the steel wires are turned by pulleys installed at the four corners on the top of the paper bin, so that the steel wires can vertically hoist the lifting paper feeding platform; the paper rubbing wheel anti-wear mechanism is installed at the position corresponding to the paper rubbing wheel of the printer on the lifting paper feeding platform; the controller of the control system is installed on the right side of the front of the paper bin and is connected to the power mechanism through wires.

[0006] Further technical solution, the paper bin includes an outer side formed by folding a thin plate and front and rear vertical frames with open bottoms, and a bottom surface and a right panel folded into an L shape. These three components are connected by rivets into a box with open tops and left sides. A door that can be opened downward is connected to the lower left side of the bottom surface and the right panel by a hinge; cross beams are respectively fixedly installed on the inner sides of the upper planes of the front and rear vertical frames. A vertical beam is fixedly installed on the upper plane of the left end of the cross beam, and the left side surface of the vertical beam is flush with the closed door; pulleys are respectively installed on the outer side surfaces of both ends of the cross beam; vertical notches are respectively opened on the inner side surfaces of the front and rear vertical frames corresponding to each pulley, and the four corners can extend into the notches and slide up and down in the notches.

[0007] Further technical solution, the power mechanism includes a reduction motor, and a winch is installed at each end of its output shaft. Two steel wires with different lengths are wound around each winch. One end of each steel wire is fixed on the winch, and the other end passes around the pulley and is respectively connected to the corresponding corner of the lifting paper feeding platform.

[0008] Further technical solution, the lifting paper feeding platform includes a platform board with downward folded edges around. Support beams are respectively fixedly installed at the left and right ends of the lower plane of the platform board. The ends of the support beams extend out of the platform board to form four corners. Through holes for fixing steel wires are opened at the corners. Two long holes are opened on the platform board near the right side. The positions of these two long holes are directly below the printer paper rubbing wheel after the installation of this large-capacity paper feeding device for a printer.

[0009] Further technical solution, the paper rubbing wheel anti-wear mechanism includes two rollers. The two rollers are installed on a roller shaft. The roller shaft is installed on the lower plane of the platform board through a stop block. The upper surfaces of the rollers pass through the long holes of the platform board and are flush with the upper plane of the platform board.

[0010] Further technical solution, the control system includes a controller installed on the right side of the front of the paper bin, a lower limit switch installed on the inner side wall below the paper bin, a paper surface detection switch installed on the vertical beam of the paper bin, and a forward and reverse control switch. The switch contacts of the forward and reverse control switch face the door and are controlled by the opening and closing of the door; the lower limit switch, the paper surface detection switch, and the forward and reverse control switch are connected to the controller through wires.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: This large-capacity printer paper feeding device adopts the structure of a paper bin, a lifting paper feeding platform, a power mechanism, a paper rubbing wheel anti-wear mechanism, and a control system. The paper placed in the paper bin is connected to the printer through an open top. The power mechanism is controlled by the control system to automatically convey the paper upward, so that the paper is always kept at a position where it can contact the paper rubbing wheel of the printer, and can continuously and stably supply paper to the printer. The height of the paper bin can be set according to actual needs to increase the paper supply capacity of the printer and reduce the number of times of manually replenishing paper. Moreover, for this printer paper feeding device with such a structure, only one is needed for each printer to load a large amount of paper, and there is no need to set up a multi-paper bin paper feeding with a complex structure, effectively reducing the cost of the printer. The setting of the paper rubbing wheel anti-wear mechanism on the lifting paper feeding platform can make the paper rubbing wheel roll and contact with the roller when the paper is used up, effectively preventing the paper rubbing wheel from being worn. It can be seen that this large-capacity printer paper feeding device solves the technical problems of small single paper supply capacity of shared printers and complex structure of multiple paper supply bins. Description of the Drawings

[0012] Attached Figure 1 is a three-dimensional view of the overall structure of the present utility model.

[0013] Attached Figure 2 is a front view of the overall structure of the present utility model.

[0014] Attached Figure 3 is a right view of the overall structure of the present utility model.

[0015] Attached Figure 4 is a three-dimensional view of the structure of the paper bin of the present utility model.

[0016] Attached Figure 5 is a bottom-up three-dimensional view of the lifting paper feeding platform of the present utility model.

[0017] Explanation of the reference symbols in the drawings: 1 - paper bin; 2 - lifting paper feeding platform; 3 - power mechanism; 4 - paper rubbing wheel anti-wear mechanism; 5 - control system. Detailed Embodiments

[0018] To make the implementation purpose, technical solutions and advantages of the present utility model clearer, the following further describes the present utility model in detail in the form of embodiments with reference to the accompanying drawings.

[0019] As attached Figures 1 - 3As shown in the figure, the large-capacity paper feeding device of the present utility model includes a paper bin 1, a lifting paper feeding platform 2, a power mechanism 3, a paper rubbing wheel anti-wear mechanism 4, and a control system 5. Among them, the lifting paper feeding platform 2 is horizontally hoisted in the paper bin 1 by four steel wire ropes 31. The power mechanism 3 is installed on the left side of the paper bin 1 and is connected and fixed to the four corners 21 of the lifting paper feeding platform 2 through the steel wire ropes 31. The steel wire ropes 31 are turned by pulleys 32 installed at the four corners of the upper surface of the paper bin 1, so that the steel wire ropes 31 can vertically hoist the lifting paper feeding platform 2. The paper rubbing wheel anti-wear mechanism 4 is installed on the lifting paper feeding platform 2 at the position corresponding to the paper rubbing wheel of the printer. The controller 51 of the control system 5 is installed on the right side of the front surface of the paper bin 1 and is connected to the power mechanism 3 through a wire.

[0020] As shown in the attached Figure 4 figure, the paper bin 1 includes an outer side formed by folding a thin plate and a front vertical frame 11 and a rear vertical frame 12 with an open bottom, as well as a bottom surface and a right panel 13 folded into an L shape. These three components are connected by rivets into a box with an open upper surface and left surface. A bin door 15 that can be opened downward is connected to the left lower edge of the bottom surface and the right panel 13 through a hinge 14. On the inner side of the upper planes of the front vertical frame 14 and the rear vertical frame 12, a cross beam 16 is respectively fixed and installed. On the upper plane of the left end of the cross beam 16, a vertical beam 17 is fixed and installed. The left side surface of the vertical beam 17 is flush with the bin door 15 after it is closed. Pulleys 32 are respectively installed on the outer side surfaces of both ends of the cross beam 16. A vertical notch 18 is respectively opened under each pulley 32 on the inner side surfaces of the front vertical frame 11 and the rear vertical frame 12. The four corners 21 can extend into the notch 18 and slide up and down in the notch 18.

[0021] As shown in the attached Figure 3 figure, the power mechanism 3 includes a reduction motor 33. At both ends of its output shaft 34, a winch 35 is respectively installed. Two steel wire ropes 31 with different lengths are wound around each winch 35. One end of each steel wire rope 31 is fixed on the winch 35, and the other end bypasses the pulley 32 and is respectively connected to the corresponding corner 21 of the lifting paper feeding platform 2 (as shown in the attached Figure 2 figure).

[0022] As shown in the attached Figure 5 figure, the lifting paper feeding platform 2 includes a platform board 22 with downward folded edges around it. At the left and right ends of the lower plane of the platform board 22, a supporting beam 23 is respectively fixed. The end of the supporting beam 23 extends out of the platform board 22 to form four corners 21. Through holes for fixing the steel wire ropes 31 are opened on the corners 21. Two long holes 24 are opened on the right side of the platform board 22. The positions of these two long holes 24 are directly below the paper rubbing wheel of the printer after the installation of this large-capacity paper feeding device of the printer.

[0023] As shown in the attached Figure 5 and 1As shown, the paper feed wheel anti-wear mechanism 4 includes two rollers 41. The two rollers 41 are installed on a roller shaft 42. The roller shaft 42 is installed on the lower plane of the table board 22 through a stopper 43. The upper surface of the roller 41 passes through the long hole 24 of the table board 22 and is flush with the upper plane of the table board 22.

[0024] As shown in the appendix Figure 1 and 3 As shown, the control system 5 includes a controller 51 installed on the front right side of the paper bin 1, a lower limit switch 52 installed on the inner side wall under the paper bin, a paper surface detection switch 53 installed on the vertical beam 17 of the paper bin 1, and a forward and reverse control switch 54. The switch contacts of the forward and reverse control switch 54 face the bin door 15 and are controlled by the opening and closing of the bin door 15; the lower limit switch 52, the paper surface detection switch 53, and the forward and reverse control switch 54 are connected to the controller 51 through wires.

[0025] According to the structure of the above embodiment, the following operating effects are achieved: As shown in the appendix Figure 1 As shown, the top of the large-capacity printer paper feeding device described in the present utility model is in an open manner, and the paper placed inside the paper bin 1 is connected to the printer through the open mouth. When it is necessary to replenish the paper, open the bin door 15 downward. The reverse position of the forward and reverse control switch 54 closes due to the departure of the bin door 15. The controller 51 controls the reduction motor 33 to start reversing, driving the winch 35 to reverse and release the steel wire rope 31. The lifting paper feeding platform 2 descends under the action of gravity. When the lifting paper feeding platform 2 descends to the lowest end, it touches the lower limit switch 52, and the lower limit switch 52 disconnects, controlling the reduction motor 33 to stop rotating. At this time, the paper can be placed on the lifting paper feeding platform 5. Close the bin door 15, pressing the forward position of the forward and reverse control switch 54 to close, controlling the reduction motor 33 to start rotating forward, driving the winch 35 to rotate forward to retract the steel wire rope 31, raising the lifting paper feeding platform 2, and conveying the paper to within the working limit of the printer paper feed wheel. After the paper surface detection switch 53 detects the paper, it disconnects, controlling the reduction motor 33 to stop rotating. When the printer is in the printing process and the paper is continuously decreasing, when the paper surface detection switch 53 does not detect the paper, the paper surface detection switch 53 closes, controlling the reduction motor 33 to rotate forward, raising the lifting paper feeding platform 2 until the paper surface detection switch 53 detects the paper and then stops, repeating continuously, keeping the paper always within the working limit of the printer paper feed wheel.

[0026] As shown in the appendix Figure 1 and 5 As shown, when there is paper on the lifting paper feeding platform 2, the roller 41 does not work. When the paper is used up, the printer will still drive the paper feed wheel to roll. At this time, the paper feed wheel contacts the roller 41, and the roller 41 will rotate with the paper feed wheel, which can effectively prevent the paper feed wheel from being worn and affecting the paper feeding effect.

[0027] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model.

[0028] The technical solution of the present invention uses ordinary materials, is suitable for industrial production, and has feasibility and practicality.

Claims

1. A large-capacity printer paper supply device, characterized in that: It includes a paper bin, a lifting paper feeding platform, a power mechanism, a paper pickup roller anti-wear mechanism and a control system; the lifting paper feeding platform is horizontally suspended in the paper bin by four steel wires; the power mechanism is installed on the left side of the paper bin and connected to the four corners of the lifting paper feeding platform by steel wires, and the steel wires are turned by pulleys installed on the four corners of the paper bin; the paper pickup roller anti-wear mechanism is installed on the lifting paper feeding platform corresponding to the position of the printer paper pickup roller; the controller of the control system is installed on the right side of the front of the paper bin and connected to the power mechanism by wires.

2. The large-capacity printer paper feeding device according to claim 1, characterized in that: The paper bin comprises an outer side folded from a thin plate and an open front frame and a rear frame at the bottom, as well as an L-shaped bottom and a right panel, the three components being connected by rivets to form a box with an open top and left side, and a bin door that can be opened downwards being connected to the bottom and the lower left side of the right panel by hinges; a horizontal beam is fixedly installed on the inner side of the upper plane of the front frame and the rear frame, a vertical beam is fixedly installed on the upper plane of the left end of the horizontal beam, and the left side of the vertical beam is flush with the bin door after closing; pulleys are installed on the outer side surfaces at both ends of the horizontal beam; a vertical slot is opened on the inner side surfaces of the front frame and the rear frame corresponding to each pulley, and the four table corners can extend into the slot and slide up and down in the slot.

3. The large-capacity printer paper feeding device according to claim 2, characterized in that: The power mechanism includes a reduction motor, and a capstan is installed at each end of its output shaft. Two steel wire ropes of different lengths are wound around each capstan. One end of each steel wire rope is fixed on the capstan, and the other end is passed around a pulley and connected to the corresponding table corner of the lifting and feeding platform.

4. The large-capacity printer paper feeding device according to claim 3, characterized in that: The lifting paper feeding platform comprises a table with downward folded edges on all sides, a supporting beam is fixed to the left and right ends of the lower plane of the table, the ends of the supporting beam extend out of the table to form four table corners, the table corners are provided with holes for fixing steel wire ropes, and two long holes are provided on the right side of the table.

5. The large-capacity printer paper feeding device according to claim 4, characterized in that: The pick-up wheel anti-wear mechanism comprises two rollers, which are mounted on a roller shaft. The roller shaft is mounted on the lower plane of the table through a stopper. The upper surface of the roller passes through the long hole of the table and is flush with the plane of the table.

6. The large-capacity printer paper feeding device according to claim 5, characterized in that: The control system includes a controller installed on the right side of the front of the paper bin, a lower limit switch installed on the inner wall below the paper bin, a paper surface detection switch and a forward and reverse control switch installed on the vertical beam of the paper bin, the switch contacts of the forward and reverse control switch are facing the bin door and are controlled by the switch of the bin door; the lower limit switch, the paper surface detection switch, and the forward and reverse control switch are connected to the controller through wires.

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