An automatic paper feeding device for a printer

Abstract

The utility model discloses a kind of automatic paper feeding devices for printer, comprising: support frame, horizontal setting in the rear of printer;Stand, vertically setting in the tail end position of support frame;Air inflation shaft, horizontal rotation connection between a pair of stand;Driving mechanism, for control air inflation shaft rotation;Slide table, horizontal setting in the front end position of support frame;Suspension, horizontal setting on slide table;Guiding mechanism, setting on suspension, and located between slide table and air inflation shaft.The utility model has following advantages and effects: by setting the paper feeding device that can be loaded to large capacity paper roll, and cooperate with guiding mechanism to realize the guidance of paper feeding process, realize the long time continuous supply and non-stop supply of paper, meet the place where printing demand is larger, without frequently carrying out paper changing operation, ensure printing smoothness.

Description

Technical Field

[0001] This utility model relates to the field of printers, and in particular to an automatic paper feeding device for printers. Background Technology

[0002] A printer is a computer output device whose main function is to print electronic documents in physical form on paper or other media, realizing the conversion "from digital to paper". The paper feeding device of the printer is the key component responsible for accurately and stably feeding the paper into the printing area.

[0003] Traditional printer paper feeding mechanisms typically place a stack of paper in the paper tray, requiring a paper change after each stack is used. However, for locations with high printing demands, frequent paper changes are necessary, making the printing process inconvenient and affecting printing smoothness, thus requiring improvement. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic paper feeding device for printers, which can reduce the number of paper changes and ensure smooth printing.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic paper feeding device for a printer, comprising: The support frame is horizontally positioned behind the printer; A column is vertically installed at the rear end of the support frame; An air-expansion shaft is horizontally rotatably connected between a pair of the columns; A drive mechanism is used to control the rotation of the air shaft; The slide is horizontally positioned at the front end of the support frame; The suspension is horizontally mounted on the slide platform; A guide mechanism is mounted on the suspension and located between the slide and the air shaft.

[0006] In a preferred embodiment, the present invention can be further configured such that: the driving mechanism includes a reducer, a transmission gear, and a driven gear; the reducer is mounted on one of the columns; the transmission gear is rotatably connected to the column and meshes with the reducer; and the driven gear is located at the end of the air shaft and meshes with the transmission gear.

[0007] In a preferred embodiment, the present invention can be further configured such that: the upper end of the column is provided with a C-shaped groove for the end position of the air shaft to be inserted into; and the upper end of the column is threadedly connected with a locking pin to block the air shaft.

[0008] In a preferred embodiment, the present invention can be further configured such that a blocking block for blocking the air shaft is provided at the lower end of the slot.

[0009] In a preferred embodiment, the present invention can be further configured such that: the suspension is horizontally slidably connected to the slide table, a lead screw is horizontally rotatably connected to the slide table, and a slider threadedly connected to the lead screw is provided on the suspension.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the guiding mechanism includes a guide plate, a crossbeam, a feed roller, an output roller, a guide roller, and a displacement sensor. The guide plate is vertically disposed on both sides of the suspension. The crossbeam is horizontally disposed between a pair of guide plates. The feed roller and the output roller are horizontally and side-by-side disposed between the upper ends of a pair of guide plates. The guide roller is horizontally disposed between a pair of guide plates, located between the feed roller and the output roller, and below the feed roller and the output roller. The guide roller is vertically slidably connected to the guide plate. The displacement sensor is used to detect the slippage of the guide roller and control the operation of the driving mechanism.

[0011] In a preferred embodiment, the present invention can be further configured such that: a limiting ring abutting against the inner side of the guide plate and a limiting gear located on the outer side of the guide plate are provided on the guide roller, and a limiting rack meshing with the limiting gear is vertically provided on the outer side of the guide plate.

[0012] In a preferred embodiment, the present invention can be further configured such that: a synchronization sensor is provided on the outer side of each guide plate, and a pair of synchronization sensors are arranged alternately in an up-down manner, and are used to monitor the synchronization of the guide rollers.

[0013] In a preferred embodiment, the present invention can be further configured such that an impact sensor located above the guide roller is disposed on the outer side of the guide plate.

[0014] In summary, this utility model has the following beneficial effects: 1. By setting up a paper feeding device that can feed large-capacity paper rolls, and cooperating with a guiding mechanism to guide the paper feeding process, a long-term continuous and uninterrupted paper supply can be achieved, meeting the needs of places with large printing demands, eliminating the need for frequent paper changes, and ensuring smooth printing. 2. By setting paper rollers, output rollers, and guide rollers on the guiding mechanism, the paper is laid out in a zigzag pattern. The displacement sensor is used to sense the floating of the guide rollers, thereby controlling the rotation of the air shaft to achieve automatic paper feeding and complete the stable paper supply of the printer. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the working state of the embodiment; Figure 2 This is a structural schematic diagram of an embodiment; Figure 3 This is a schematic diagram of the structure of the column and drive mechanism in the embodiment; Figure 4 This is a schematic diagram of the slide and suspension in the embodiment; Figure 5 This is a schematic diagram of the guiding mechanism in the embodiment; Figure 6 This is a schematic diagram of the connection relationship of the guide mechanism in the embodiment.

[0016] Reference numerals in the attached drawings: 1. Support frame; 2. Column; 21. Slot; 22. Locking pin; 23. Block; 3. Air shaft; 4. Drive mechanism; 41. Reducer; 42. Transmission gear; 43. Driven gear; 5. Slide table; 51. Lead screw; 6. Suspension; 61. Slider; 7. Guide mechanism; 71. Guide plate; 711. Limit rack; 712. Synchronization sensor; 713. Impact sensor; 72. Crossbeam; 73. Feed roller; 74. Output roller; 75. Guide roller; 751. Limit ring; 752. Limit gear; 76. Displacement sensor. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, an automatic paper feeding device for a printer includes a support frame 1, a column 2, an air shaft 3, a drive mechanism 4, a slide table 5, a suspension 6, and a guide mechanism 7.

[0019] like Figure 1 , Figure 2 As shown, the support frame 1 is horizontally positioned at the rear of the printer, and a pair of uprights 2 are vertically positioned at the tail end of the support frame 1. The air shaft 3 is horizontally rotatably connected between the pair of uprights 2 and is used for paper roll installation. The drive mechanism 4 is used to control the rotation of the air shaft 3 to achieve paper unwinding.

[0020] like Figure 1 , Figure 2 As shown, the slide table 5 is horizontally positioned at the front end of the support frame 1, and the suspension 6 is horizontally positioned on the slide table 5. The guide mechanism 7 is positioned on the suspension 6 and located between the slide table 5 and the air shaft 3, realizing paper tension adjustment and stable paper feeding.

[0021] Therefore, by setting up a paper feeding device that can feed large-capacity paper rolls, and cooperating with the guiding mechanism 7 to guide the paper feeding process, a long-term continuous and non-stop paper supply can be achieved, meeting the needs of places with large printing demands, eliminating the need for frequent paper changes, and ensuring smooth printing.

[0022] like Figure 3 As shown, the drive mechanism 4 includes a reducer 41, a transmission gear 42, and a driven gear 43. The reducer 41 is mounted on one of the columns 2. The transmission gear 42 is rotatably connected to the column 2 and meshes with the reducer 41. The driven gear 43 is located at the end of the air shaft 3 and meshes with the transmission gear 42.

[0023] like Figure 3 As shown, the upper end of the column 2 is provided with a C-shaped slot 21, which is used to insert the end of the air shaft 3. The upper end of the column 2 is threaded with a locking pin 22 to block the air shaft 3, so as to realize the locking and fixing of the air shaft 3.

[0024] like Figure 3 As shown, the lower end of the slot 21 is provided with a block 23 for blocking the air shaft 3, so as to limit the air shaft 3 after it is unlocked, prevent the air shaft 3 from rolling down and injuring the user's foot position, and ensure safety during the paper roll replacement process.

[0025] When it is necessary to replace the used paper roll, first loosen the locking pin 22, then control the air shaft 3 to roll outwards, and then the air shaft 3 can be removed from the opening of the slot 21 to disassemble the used paper roll. Then, the new paper roll is put on the air shaft 3 to tighten and fix the paper roll.

[0026] Then, the two ends of the air shaft 3 are snapped into the slots 21 on the column 2. At this time, the driven gear 43 on the air shaft 3 meshes with the transmission gear 42 on the column 2. Then, the locking pin 22 is tightened so that the locking pin 22 snaps into the air shaft 3, thus realizing the snapping and fixing of the air shaft 3 and completing the paper roll replacement operation.

[0027] When feeding the paper roll, the reducer 41 works intermittently. At this time, the reducer 41 controls the transmission gear 42 to rotate, the transmission gear 42 drives the driven gear 43 to work, and the driven gear 43 drives the air shaft 3 to work, so as to realize the unwinding of the paper roll and complete the paper supply operation.

[0028] like Figure 4 As shown, the suspension 6 is horizontally slidably connected to the slide table 5, and the slide table 5 is horizontally rotatably connected to the lead screw 51. The suspension 6 is provided with a slider 61 that is threadedly connected to the lead screw 51.

[0029] After the paper roll is replaced, the lead screw 51 can be manually rotated to achieve the sliding control of the suspension 6, so that the suspension 6 drives the guide mechanism 7 to slide synchronously, thereby enabling the paper to enter the guide mechanism 7 stably and achieve a stable paper supply.

[0030] like Figure 5 , Figure 6 As shown, the guiding mechanism 7 includes a guide plate 71, a crossbeam 72, a paper feed roller 73, a paper output roller 74, a guide roller 75, and a displacement sensor 76.

[0031] like Figure 5 , Figure 6 As shown, guide plates 71 are vertically arranged on both sides of suspension 6, crossbeam 72 is horizontally arranged between a pair of guide plates 71, and feed roller 73 and output roller 74 are horizontally arranged side by side between the upper ends of a pair of guide plates 71.

[0032] like Figure 5 , Figure 6 As shown, the guide roller 75 is horizontally disposed between a pair of guide plates 71, and is located between the feed roller 73 and the output roller 74, and is located below the feed roller 73 and the output roller 74.

[0033] like Figure 5 , Figure 6 As shown, the guide roller 75 is vertically slidably connected to the guide plate 71, and the displacement sensor 76 is used to detect the slippage of the guide roller 75 and control the operation of the drive mechanism 4.

[0034] When paper is loaded, it passes sequentially through the feed roller 73, guide roller 75, and output roller 74, resulting in a V-shaped paper arrangement that supports the guide roller 75. When the printer needs paper, it pulls the paper to move, which in turn supports the guide roller 75 as the paper is supplied. Simultaneously, the displacement sensor 76 transmits information to the drive mechanism 4 to realize the paper feeding operation.

[0035] Meanwhile, after the air shaft 3 rotates and feeds paper, the weight of the guide roller 75 presses the paper downward again, and re-tensions the paper unwound by the air shaft 3, completing one paper feeding cycle. When feeding paper again, the previous cycle is repeated to complete uninterrupted paper feeding.

[0036] like Figure 5 , Figure 6 As shown, the guide roller 75 is provided with a limiting ring 751 that abuts against the inner side of the guide plate 71 and a limiting gear 752 located on the outer side of the guide plate 71. A limiting rack 711 that meshes with the limiting gear 752 is vertically provided on the outer side of the guide plate 71.

[0037] like Figure 5 , Figure 6As shown, a synchronization sensor 712 is provided on the outer side of each guide plate 71. A pair of synchronization sensors 712 are arranged in an alternating manner and are used to monitor the synchronization of the guide rollers 75.

[0038] During paper feeding, each time the paper pulls the guide roller 75 upward or the guide roller 75 moves downward automatically, the guide roller 75 rolls stably under the action of the limit gear 752 and the limit rack 711, thus ensuring the tight and stable transmission of the paper. At the same time, the synchronization sensor 712 monitors the synchronization of the pair of guide rollers 75 in real time and issues an alarm when skipping teeth or jamming occurs, ensuring stable paper transmission.

[0039] like Figure 5 , Figure 6 As shown, an impact sensor 713 is provided on the outer side of the guide plate 71, located above the guide roller 75.

[0040] Therefore, when special circumstances occur that cause the displacement sensor 76 and the synchronization sensor 712 to malfunction, the guide roller 75 will continue to move upward and eventually collide with the impact sensor 713, thereby issuing an alarm to remind staff to repair and handle the issue in a timely manner to ensure stable paper transmission.

[0041] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. An automatic paper feeding device for a printer, characterized in that: include: Support frame (1) is horizontally positioned behind the printer; The column (2) is vertically installed at the tail end of the support frame (1); An air shaft (3) is horizontally rotatably connected between a pair of columns (2); Drive mechanism (4) is used to control the rotation of the air shaft (3); The slide (5) is horizontally positioned at the front end of the support frame (1); The suspension (6) is horizontally mounted on the slide (5); The guide mechanism (7) is mounted on the suspension (6) and located between the slide (5) and the air shaft (3).

2. The automatic paper feeding device for a printer according to claim 1, characterized in that: The drive mechanism (4) includes a reducer (41), a transmission gear (42), and a driven gear (43). The reducer (41) is mounted on one of the columns (2). The transmission gear (42) is rotatably connected to the column (2) and meshes with the reducer (41). The driven gear (43) is located at the end of the air shaft (3) and meshes with the transmission gear (42).

3. The automatic paper feeding device for a printer according to claim 2, characterized in that: The upper end of the column (2) is provided with a C-shaped groove (21), which is used for the end position of the air shaft (3) to be inserted. The upper end of the column (2) is threaded with a locking pin (22) to block the air shaft (3).

4. An automatic paper feeding device for a printer according to claim 3, characterized in that: The lower end of the slot (21) is provided with a block (23) for blocking the air shaft (3).

5. An automatic paper feeding device for a printer according to claim 1, characterized in that: The suspension (6) is horizontally slidably connected to the slide (5), and a lead screw (51) is horizontally rotatably connected to the slide (5). The suspension (6) is provided with a slider (61) that is threadedly connected to the lead screw (51).

6. An automatic paper feeding device for a printer according to claim 1, characterized in that: The guiding mechanism (7) includes a guide plate (71), a crossbeam (72), a paper feed roller (73), a paper output roller (74), a guide roller (75), and a displacement sensor (76). The guide plate (71) is vertically arranged on both sides of the suspension (6). The crossbeam (72) is horizontally arranged between a pair of guide plates (71). The paper feed roller (73) and the paper output roller (74) are horizontally arranged side by side between the upper ends of a pair of guide plates (71). The guide roller (75) is horizontally arranged between a pair of guide plates (71) and is located between the paper feed roller (73) and the paper output roller (74), and is located below the paper feed roller (73) and the paper output roller (74). The guide roller (75) is vertically slidably connected to the guide plate (71). The displacement sensor (76) is used to detect the slippage of the guide roller (75) and control the operation of the drive mechanism (4).

7. An automatic paper feeding device for a printer according to claim 6, characterized in that: The guide roller (75) is provided with a limiting ring (751) that abuts against the inner side of the guide plate (71) and a limiting gear (752) located on the outer side of the guide plate (71). A limiting rack (711) that meshes with the limiting gear (752) is vertically provided on the outer side of the guide plate (71).

8. An automatic paper feeding device for a printer according to claim 7, characterized in that: Each of the guide plates (71) is provided with a synchronization sensor (712) on its outer side. A pair of synchronization sensors (712) are arranged in an alternating manner and are used to monitor the synchronization of the guide rollers (75).

9. An automatic paper feeding device for a printer according to claim 8, characterized in that: An impact sensor (713) is provided on the outer side of the guide plate (71) above the guide roller (75).

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