Paper pile dividing device and printer

Abstract

The invention provides a paper pile separating device and a printer, and belongs to the technical field of printing, and the paper pile separating device comprises a rack, a paper conveying mechanism, a first pickup roller mechanism, a second pickup roller mechanism and a balance wheel driving mechanism. And the rack provides support for each mechanism. The two groups of pickup roller mechanisms are arranged above the transmission platform side by side in the left-right direction; each pickup roller mechanism comprises a pickup roller assembly provided with a plurality of pickup rollers arranged in the paper conveying direction, and each pickup roller inclines towards the center line of the conveying platform. A cam shaft of the balance wheel driving mechanism drives two cams with different strokes to rotate, the two cams respectively drive two swing rods to swing up and down in a reciprocating mode, when one group of paper rubbing wheel assembly presses down to rub paper, the other group of paper rubbing wheel assembly lifts up without providing power, and meanwhile the paper rubbing wheel assemblies are obliquely arranged, so that the paper rubbing effect is improved. Therefore, the paper respectively deviates leftwards and rightwards, so that the aim of separating the paper piles is fulfilled. The whole structure is simple and compact, parts are high in repetition rate and symmetrically arranged, and occupied space is small.

Description

Technical Field

[0001] This invention belongs to the field of printing technology, specifically relating to a paper stacking device and a printer. Background Technology

[0002] Existing printers achieve stacking by moving the paper delivery mechanism left and right, which is relatively complex and takes up a lot of space. Summary of the Invention

[0003] This invention provides a paper stacking device and printer, aiming to solve the problems of complex structure and large space occupation of current paper stacking devices.

[0004] Firstly, to achieve the above objectives, the technical solution adopted by the present invention is: to provide a paper stacking device suitable for connection with the paper transport channel of a printer, the stacking device comprising: frame; The paper transport mechanism includes a transport platform mounted on the frame and a conveyor belt surrounding the transport platform; The second paper feed roller mechanism and the first paper feed roller mechanism are arranged side by side above the transmission platform in the left-right direction; the first paper feed roller mechanism includes a first paper feed roller assembly with multiple first paper feed rollers arranged in the paper conveying direction and a first matching bracket for assembling the first paper feed roller assembly, and each first paper feed roller is inclined in the direction away from the center line of the transmission platform in the paper conveying direction. Correspondingly, the second paper-feeding rollers of the second paper-feeding roller mechanism are inclined in a direction away from the centerline of the transmission platform; and The swing wheel drive mechanism includes a camshaft, a first cam and a second cam fixedly mounted on the camshaft, a first swing arm mounted to the first cam and a second swing arm mounted to the second cam, wherein the first swing arm is hinged to the first matching bracket and the second swing arm is hinged to the second matching bracket of the second paper feed wheel mechanism. When the camshaft rotates, the first rocker arm drives the first paper-feeding roller mechanism to press down and contact the conveyor belt. The tilted first paper-feeding roller causes the paper being transported to shift to the right, forming a paper stack at the first position. At this time, the second rocker arm drives the second paper-feeding roller mechanism to lift up. When the second rocker arm drives the second paper-feeding roller mechanism to press down and contact the conveyor belt, the first rocker arm drives the first paper-feeding roller mechanism to lift up. The tilted second paper-feeding roller causes the paper being transported to shift to the left, forming a paper stack at the second position.

[0005] In conjunction with the first aspect, in one feasible manner, the structure of the first paper feed roller assembly mounted on the first matching bracket is as follows: the first matching bracket is provided with a first mounting hole corresponding to each of the first paper feed rollers, and the center line of the wheel axle of the first paper feed roller intersects the center line of the transmission platform at an obtuse angle, so that the first paper feed roller is tilted away from the center line of the transmission platform. Correspondingly, the second paper feeding roller assembly is mounted on the second matching bracket; Furthermore, the obtuse angles are all formed towards the paper conveying direction, and the acute angles are formed away from the paper conveying direction. The corresponding second paper feed roller and the first paper feed roller gradually move away from each other along the paper conveying direction, so that the paper is shifted to the left and right sides respectively.

[0006] In conjunction with the first aspect, in one feasible manner, each set of paper feed roller assemblies includes two rows of paper feed rollers arranged side by side.

[0007] In conjunction with the first aspect, in one feasible manner, the paper feed rollers at both ends along the paper conveying direction in each set of paper feed roller assemblies are densely arranged, while the paper feed rollers in the middle part are sparsely arranged.

[0008] In conjunction with the first aspect, in one feasible manner, the first mounting hole has a cross-shaped structure, and the axle is mounted in the first mounting hole.

[0009] In conjunction with the first aspect, in one possible implementation, the first supporting bracket includes a first supporting plate for mounting the first paper feed roller assembly and a first connecting plate connected to the first supporting plate; the first swing arm is hinged to the first connecting plate. Correspondingly, the second swing arm is hinged to the second connecting plate of the second matching bracket.

[0010] In conjunction with the first aspect, in one feasible manner, a first positioning baffle aligned with the first position and a second positioning baffle aligned with the second position are respectively provided on the left and right sides of the transmission platform.

[0011] In conjunction with the first aspect, in one possible implementation, the swing wheel drive mechanism further includes a first shaft mounted on the frame, a first connecting rod and a second connecting rod rotatably mounted on the first shaft; the first connecting rod is hinged to the first swing arm via a first short shaft, and hinged to the first matching bracket via a second short shaft; The second connecting rod is hinged to the second swing arm via a third short shaft, and to the second matching bracket via a fourth short shaft.

[0012] In conjunction with the first aspect, in one possible implementation, the balance wheel drive mechanism further includes a second shaft mounted on the frame and arranged behind the first shaft, a third link and a fourth link rotatably mounted on the second shaft; wherein the third link is connected to the first link via a first transmission rod; and the fourth link is connected to the second link via a second transmission rod. The first connecting rod and the third connecting rod are hinged one in front of the other on the first matching bracket along the paper conveying direction; the second connecting rod and the fourth connecting rod are hinged one in front of the other on the second matching bracket along the paper conveying direction.

[0013] The paper stacking device provided by this invention has the following advantages compared with the prior art: When the camshaft rotates, it drives the first cam and the second cam to rotate simultaneously. When the first cam moves backward toward the push stroke dead end, the first cam pushes the first rocker arm backward away from the camshaft. The rear end of the first rocker arm moves downward due to the hinged first paper feed roller mechanism. Therefore, the first rocker arm gradually moves backward and downward, and the first paper feed roller presses down and contacts the conveyor belt. Thus, under the action of the inclined first paper feed roller, the paper in the transmission shifts to the right. At this time, the second cam moves backward toward the return stroke dead end, driving the second rocker arm to lift upward. Then, the second rocker arm drives the second paper feed roller mechanism to lift away from the paper in the transmission. At this time, the paper in the transmission is only subjected to the lateral force of the first paper feed roller assembly on the right side, while the left side of the paper is not subjected to the lateral force. Therefore, the paper in the transmission shifts to the right under the action of the first paper feed roller assembly, forming a paper stack at the first position.

[0014] Similarly, when the second cam rotates backward to the end of the push stroke, the second rocker arm drives the second paper feed roller mechanism to press down and contact the conveyor belt, and the second paper feed roller assembly contacts the paper and feeds the paper; at this time, the first cam drives the first rocker arm to lift up, the first rocker arm drives the first paper feed roller mechanism to lift up, the first paper feed roller assembly leaves the paper, and the paper in the transmission is only subjected to the lateral force of the second paper feed roller assembly on the left, so it shifts to the left to form the paper stack in the second position.

[0015] In this application, the camshaft drives two cams with different strokes to rotate, which in turn drives two rocker arms to swing back and forth. This allows one set of paper feed rollers to press down and feed the paper while the other set of paper feed rollers is raised and does not provide power. At the same time, the tilted arrangement of the paper feed rollers allows the paper to be shifted to the left and right respectively, thereby achieving the purpose of stacking the paper.

[0016] The paper stacking device provided in this application uses two paper feeding roller mechanisms with identical structures. The paper feeding rollers are simply arranged at an angle. A camshaft drives the cam and the rocker arm to drive the paper feeding rollers to feed and stack the paper. The overall structure is simple and compact, with many repetitive parts and symmetrical arrangement. Assembly is simple and convenient, and the space occupied is small. Compared with the prior art, it solves the problems of complex structure and large space occupation.

[0017] Secondly, embodiments of the present invention also provide a printer, including the aforementioned paper stacking device.

[0018] The printer provided in this application adopts a stacking device with a simple and compact structure, easy and convenient assembly, and small space occupation, which is conducive to the simplification of the overall structure and assembly, and also helps to reduce the space occupied by the overall machine. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the paper stacking device provided in an embodiment of the present invention; Figure 2 A three-dimensional structural diagram of the paper stacking device provided in an embodiment of the present invention (showing the interior of the frame). Figure 3 This is an exploded view of the paper stacking device provided in an embodiment of the present invention; Figure 4 A three-dimensional structural diagram of the first paper feeding roller mechanism and the second paper feeding roller mechanism provided in an embodiment of the present invention; Figure 5 for Figure 4 A top view of the first and second paper feeding roller mechanisms provided in the embodiment; Figure 6 A three-dimensional structural schematic diagram of the balance wheel drive mechanism provided in an embodiment of the present invention; Figure 7 A three-dimensional structural schematic diagram of the first matching plate provided in an embodiment of the present invention; Figure 8 A three-dimensional structural schematic diagram of the second positioning baffle provided in an embodiment of the present invention; Figure 9 A schematic diagram illustrating the cam push stroke and return stroke involved in this invention; Explanation of reference numerals in the attached figures: 1. Second paper feed roller mechanism; 11. Second matching plate; 12. Second paper feed roller; 13. Second connecting plate; 2. Swing wheel drive mechanism; 21. Camshaft; 22. First shaft; 23. First transmission rod; 24. Second transmission rod; 25. Second shaft; 26. First cam; 27. Second connecting rod; 28. Second swing rod; 29. ​​Second cam; 210. First swing rod; 211. First connecting rod; 212. Second short shaft; 213. Third connecting rod; 214. Fourth connecting rod; 215. Third short shaft; 216. Fourth short shaft; 3. Conveyor belt; 4. First drive roller shaft; 5. Frame; 6. First paper feed roller mechanism; 61. First matching plate; 62. First paper feed roller; 63. First connecting plate; 64. First mounting hole; 7. Transmission platform; 8. Center line of transmission platform; 9. First positioning baffle; 10. Second positioning baffle. Detailed Implementation

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] It should be explained that the front and back orientations in this application are based on the paper conveying direction, with the front or front facing the conveying direction and the back or rear facing away from the conveying direction; the left and right orientations refer to the left and right orientations defined by the paper conveying direction, with the left arm side being the left side and the right arm side being the right side; the up and down orientations are the orientations perpendicular to the horizontal plane.

[0022] Please refer to the following: Figures 1 to 8 The paper stacking device provided by the present invention will now be described. The paper stacking device includes a paper transport channel adapted for connection with a printer, and comprises: a frame 5, a paper transport mechanism, a first paper feed roller mechanism 6, a second paper feed roller mechanism 1, and a swing wheel drive mechanism 2. The frame 5 provides support for each mechanism.

[0023] See Figures 1 to 5 As shown, the paper transport mechanism includes a transport platform 7 mounted on the frame 5 and a conveyor belt 3 surrounding the transport platform 7; when the paper feed roller assembly is pressed down, the transport platform 7 supports the conveyor belt 3, so that the paper feed roller assembly keeps in contact with the paper being transported on the conveyor belt 3, thereby achieving the rubbing of the paper.

[0024] The paper transport mechanism is a commonly used transport mechanism in printers, including a chain drive assembly or belt drive assembly that drives the conveyor belt 3 to transport the paper. For example, it includes a transport drive motor mounted on the side of the frame 5, a first active roller 4 and a first driven roller connected by belt drive. The first active roller 4 and the first driven roller are arranged one in front of the other along the paper transport direction, and the conveyor belt 3 is wound around the two rollers.

[0025] See Figures 1 to 5 As shown, the first paper-feeding roller mechanism 6 and the second paper-feeding roller mechanism 1 have the same structure. The second paper-feeding roller mechanism 1 and the first paper-feeding roller mechanism 6 are arranged side by side on the upper part of the transmission platform 7 in the left-right direction. The second paper-feeding roller mechanism 1 and the first paper-feeding roller mechanism 6 are symmetrically distributed on the left and right along the center line 8 of the transmission platform. The first paper-feeding roller mechanism 6 includes a first paper-feeding roller assembly with multiple first paper-feeding rollers 62 arranged in the paper conveying direction and a first matching bracket for assembling the first paper-feeding roller assembly. Each first paper-feeding roller 62 is inclined in a direction away from the center line 8 of the transmission platform.

[0026] Correspondingly, the second paper-feeding rollers 12 of the second paper-feeding roller mechanism 1 are inclined in a direction away from the center line 8 of the transmission platform; the inclined paper-feeding rollers provide lateral force to the paper, causing the paper to be rubbed to shift to the left or right to achieve paper stacking.

[0027] See Figures 1 to 3 As shown, the swing wheel drive mechanism 2 includes a camshaft 21, a first cam 26 and a second cam 29 fixedly mounted on the camshaft 21, a first swing arm 210 mounted with the first cam 26, and a second swing arm 28 mounted with the second cam 29. The first swing arm 210 is hinged to a first matching bracket, and the second swing arm 28 is hinged to a second matching bracket of the second paper feed roller mechanism 1. The camshaft 21 drives the first cam 26 and the second cam 29 to rotate simultaneously, thereby driving the first swing arm 210 and the second swing arm 28 to swing forward and swing upward and downward respectively, realizing the downward pressing and lifting of the connected paper feed roller mechanism.

[0028] When the camshaft 21 rotates, the first rocker arm 210 drives the first paper feed roller mechanism 6 to press down and contact the conveyor belt 3, and the tilted first paper feed roller 62 causes the paper being transported to shift to the right, forming a paper stack at the first position. At this time, the second rocker arm 28 drives the second paper feed roller mechanism 1 to lift up, and the second paper feed roller 12 assembly does not contact the paper and does not apply lateral force to the paper. When the second rocker arm 28 drives the second paper feed roller mechanism 1 to press down and contact the conveyor belt 3, the first rocker arm 210 drives the first paper feed roller mechanism 6 to lift up, and the paper being transported shifts to the left, forming a paper stack at the second position.

[0029] Compared with the prior art, the paper stacking device provided by the present invention has the following advantages: When the camshaft 21 rotates, it drives the first cam 26 and the second cam 29 to rotate simultaneously. When the first cam 26 moves backward toward the push stroke stop, the first cam 26 pushes the first rocker arm 210 backward away from the camshaft 21. The rear end of the first rocker arm 210 moves downward due to the hinged first paper feed roller mechanism 6. Therefore, the first rocker arm 210 gradually moves backward and downward, and the first paper feed roller 62 presses down and contacts the conveyor belt 3. Thus, under the action of the inclined first paper feed roller 62, the paper in transit shifts to the right. At this time, the second cam 29 moves backward toward the return stroke stop, driving the second rocker arm 28 to lift upward. Then, the second rocker arm 28 drives the second paper feed roller mechanism 1 to lift away from the paper in transit. At this time, the paper in transit is only subjected to the lateral force of the first paper feed roller assembly on the right side, while the left side of the paper is not subjected to the lateral force. Therefore, the paper in transit shifts to the right under the action of the first paper feed roller assembly, forming a paper stack at the first position.

[0030] Similarly, when the second cam 29 rotates backward to the end of the push stroke, the second rocker arm 28 drives the second paper feed roller mechanism 1 to press down and contact the conveyor belt 3, and the second paper feed roller 12 assembly contacts the paper and feeds the paper; at this time, the first cam 26 drives the first rocker arm 210 to lift up, the first rocker arm 210 drives the first paper feed roller mechanism 6 to lift up, the first paper feed roller assembly leaves the paper, and the paper in the transmission is only subjected to the lateral force of the left second paper feed roller assembly, so it shifts to the left to form the paper stack in the second position.

[0031] In this application, the camshaft 21 drives two cams with different strokes to rotate, which in turn drives two rocker arms to swing back and forth. This allows one set of paper feed rollers to press down and feed the paper while the other set of paper feed rollers is raised and does not provide power. At the same time, the tilted arrangement of the paper feed rollers allows the paper to be shifted to the left and right respectively, thereby achieving the purpose of stacking the paper.

[0032] The paper stacking device provided in this application uses two paper feeding roller mechanisms with the same structure. The paper feeding rollers are simply arranged at an angle. A camshaft 21 drives the cam and the rocker arm to drive the paper feeding rollers to feed and stack the paper. The overall structure is simple and compact, with many repetitive parts and symmetrical arrangement. Assembly is simple and convenient, and the space occupied is small. Compared with the prior art, it solves the problems of complex structure and large space occupation.

[0033] Combination Figure 9 The point on the cam profile furthest from the axis is the push stroke endpoint (b), which is also the return stroke start point. The point on the cam profile closest to the axis is the push stroke start point (c), which is also the return stroke endpoint. The push stroke is the process of the cam pushing the follower away from the axis; the far-end is the stage where the follower is stationary at its highest position; the return stroke is the process of the follower returning to the axis; and the near-end is the stage where the follower is stationary at its closest position.

[0034] Camshaft 21 drives the first cam 26 and the second cam 29 to rotate. The first rocker arm 210 and the second rocker arm 28 reciprocate under the drive of their respective cams. When the first cam 26 rotates to the push stroke end point with the push stroke angle, the first rocker arm 210 drives the first paper feed roller mechanism 6 to press down to the lowest position. The first cam 26 then rotates along the return stroke angle, which can drive the first paper feed roller mechanism 6 to lift up. The operation process of the second cam 29, the second rocker arm 28 and the second paper feed roller mechanism 1 is the opposite of the operation process of the first cam 26, the first rocker arm 210 and the first paper feed roller mechanism 6. The two paper feed roller mechanisms reciprocate up and down at the same time, realizing the stacking of paper in different directions.

[0035] In some embodiments, see Figures 3 to 7As shown, the structure of the first paper feed roller assembly mounted on the first matching bracket is as follows: the first matching bracket is provided with first mounting holes 64 corresponding to each of the first paper feed rollers 62, and the center line of the wheel axle of the first paper feed roller 62 intersects the center line 8 of the transmission platform at an obtuse angle α (see...). Figure 5 This allows the first paper feed roller 62 to tilt away from the center line 8 of the transmission platform; correspondingly, the second paper feed roller 12 assembly is mounted on the second matching bracket; that is, the axle of each paper feed roller is not perpendicular to the center line 8 of the transmission platform, so that each paper feed roller can tilt relative to the center line 8 of the transmission platform.

[0036] Furthermore, the obtuse angle α is formed towards the paper conveying direction, and the acute angle is formed away from the paper conveying direction. The corresponding first paper feed roller 62 and second paper feed roller 12 gradually move away from each other along the paper conveying direction, so that the paper is shifted to the left and right sides respectively.

[0037] In some embodiments, see Figures 3 to 5 As shown, each paper feed roller assembly includes two rows of paper feed rollers arranged horizontally. These multiple rows of rollers improve the paper offset and stacking effect.

[0038] In some embodiments, see Figures 3 to 5 As shown, in each paper feed roller assembly, the paper feed rollers at both ends along the paper conveying direction are densely arranged, while the paper feed rollers in the middle part are sparsely arranged.

[0039] The purpose of this design is to increase the lateral force at both ends of the paper and avoid the risk of wrinkles in the middle. The front end of the paper contacts the rear feed rollers first; the densely packed rear feed rollers provide a greater lateral force, thus changing the paper's transport direction. When the front end of the paper reaches the middle of the feed rollers, the sparsely arranged rollers in the middle ensure smooth paper transport while reducing unnecessary friction and the risk of surface damage, ensuring smooth forward transport. When the front end reaches the front feed rollers, the densely packed front and rear feed rollers apply lateral forces to both ends of the paper, ensuring consistent offset distances and allowing the paper to be offset evenly to the right or left.

[0040] This design further optimizes the paper feeding process, effectively improves the overall paper feeding effect, and enhances the stability and reliability of equipment operation.

[0041] To explain, the term "encryption" here is relative to "sparseness." In encrypted paper feed rollers, the distance between two adjacent paper feed rollers along the paper feed direction is smaller than the distance between two adjacent paper feed rollers in a sparse arrangement.

[0042] In some embodiments, see Figures 3 to 5 , Figure 7 As shown, the first mounting hole 64 has a cross-shaped structure, and the axle is mounted inside the first mounting hole 64. This design of the first mounting hole 64 matches the external structure of the paper feeding roller, allowing the paper feeding roller to be embedded inside the first mounting hole 64, which is beneficial for a compact structure and reduces the space occupied.

[0043] In some embodiments, see Figures 3 to 7 As shown, the first supporting bracket includes a first supporting plate 61 for mounting the first paper feed roller assembly and a first connecting plate 63 connected to the first supporting plate 61; the first swing rod 210 is hinged to the first connecting plate 63; correspondingly, the second swing rod 28 is hinged to the second connecting plate 13 of the second supporting bracket; the second paper feed roller 12 is mounted on the second supporting plate 11.

[0044] In the above technical solution, each paper feeding roller is assembled on a matching plate, each connecting plate is connected to each matching plate by bolts, and each swing arm is hinged to the corresponding connecting plate.

[0045] In some embodiments, see Figures 1 to 5 , Figure 8 As shown, a second positioning baffle 10 for aligning paper stacks at a second position and a first positioning baffle 9 for aligning paper stacks at a first position are respectively provided on the left and right sides of the transmission platform 7. These positioning baffles enable the alignment of stacked papers, achieving automatic paper sorting. Each positioning baffle has a narrow slit for the side edge of the paper to enter.

[0046] In some embodiments, see Figure 3 and Figure 6 As shown, the balance wheel drive mechanism 2 also includes a first shaft 22 mounted on the frame 5, a first connecting rod 211 and a second connecting rod 27 rotatably mounted on the first shaft 22; the first connecting rod 211 is hinged to the first swing rod 210 via a first short shaft, and is hinged to the first matching bracket via a second short shaft 212; correspondingly, the second connecting rod 27 is hinged to the second swing rod 28 via a third short shaft 215, and is hinged to the second matching bracket via a fourth short shaft 216.

[0047] Taking the movement of the first cam 26 as an example, the rear end of the first rocker arm 210 rotates downward, thereby driving the first connecting rod 211 to rotate downward around the first short axis, thus realizing the downward pressing of the first matching bracket; at the same time, the second cam 29 drives the rear end of the second rocker arm to lift upward, thus realizing the lifting of the second matching bracket.

[0048] Of course, the balance wheel drive mechanism 2 includes a balance wheel drive motor, and the camshaft 21 is connected to the balance wheel drive motor via a belt. The balance wheel drive motor is mounted on the side of the frame 5 and drives the camshaft 21 to rotate.

[0049] In some embodiments, see Figure 3 and Figure 6 As shown, the balance wheel drive mechanism 2 also includes a second shaft 25 mounted on the frame 5 and arranged behind the first shaft 22, a third link 213 and a fourth link 214 rotatably mounted on the second shaft 25; wherein, the third link 213 is connected to the first link 211 through the first transmission rod 23; the fourth link 214 is connected to the second link 27 through the second transmission rod 24; the first link 211 and the third link 213 are hinged one in front of the other on the first matching bracket along the paper conveying direction; the second link 27 and the fourth link 214 are hinged one in front of the other on the second matching bracket along the paper conveying direction.

[0050] In the above technical solution, each paper feed roller mechanism is pressed down or lifted at two points, one in front and one behind, to ensure the consistency of the pressing down and lifting of each paper feed roller assembly and improve the smoothness of paper offset stacking.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0052] Based on the same inventive concept, this application also provides a printer, including the aforementioned paper stacking device.

[0053] The printer provided in this application adopts a stacking device with a simple and compact structure, easy and convenient assembly, and small space occupation, which is conducive to the simplification of the overall structure and assembly, and also helps to reduce the space occupied by the overall machine.

[0054] The paper stacking device provided in this application can be applied to single-sided printers and double-sided printers, and is used to automatically stack and organize the paper after printing.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A paper stacking device, suitable for connection with the paper transport channel of a printer, characterized in that, The stacking device includes: Rack (5); The paper transport mechanism includes a transport platform (7) mounted on the frame (5) and a conveyor belt (3) surrounding the transport platform (7); The second paper feed roller mechanism (1) and the first paper feed roller mechanism (6) are arranged side by side above the transmission platform (7) in the left-right direction; the first paper feed roller mechanism (6) includes a first paper feed roller assembly with a plurality of first paper feed rollers (62) arranged in the paper conveying direction and a first matching bracket for assembling the first paper feed roller assembly, and each first paper feed roller (62) is inclined in the direction away from the center line (8) of the transmission platform in the paper conveying direction; Correspondingly, the second paper-feeding rollers (12) of the second paper-feeding roller mechanism (1) are inclined in a direction away from the centerline (8) of the transmission platform; and The swing wheel drive mechanism (2) includes a camshaft (21), a first cam (26) and a second cam (29) fixedly mounted on the camshaft (21), a first swing rod (210) mounted with the first cam (26) and a second swing rod (28) mounted with the second cam (29), wherein the first swing rod (210) is hinged to the first matching bracket and the second swing rod (28) is hinged to the second matching bracket of the second paper feed wheel mechanism (1); When the camshaft (21) rotates, the first rocker arm (210) drives the first paper feed roller mechanism (6) to press down and contact the conveyor belt (3). The tilted first paper feed roller (62) causes the paper being transported to shift to the right, forming a paper stack at the first position. At this time, the second rocker arm (28) drives the second paper feed roller mechanism (1) to lift up. When the second rocker arm (28) drives the second paper feed roller mechanism (1) to press down and contact the conveyor belt (3), the first rocker arm (210) drives the first paper feed roller mechanism (6) to lift up. The tilted second paper feed roller (12) causes the paper being transported to shift to the left, forming a paper stack at the second position.

2. The paper stacking device as described in claim 1, characterized in that, The structure of the first paper feed roller assembly assembled on the first supporting bracket is as follows: the first supporting bracket is provided with a first mounting hole (64) corresponding to each of the first paper feed rollers (62), and the center line of the wheel axle of the first paper feed roller (62) intersects the center line (8) of the transmission platform at an obtuse angle, so that the first paper feed roller (62) tilts away from the center line (8) of the transmission platform; Correspondingly, the second paper feed roller assembly is mounted on the second matching bracket, and the second paper feed roller (12) is inclined in a direction away from the center line (8) of the transmission platform; Furthermore, the obtuse angles are all formed towards the paper conveying direction, and the acute angles are formed away from the paper conveying direction. The corresponding second paper feed roller (12) and the first paper feed roller (62) gradually move away from each other along the paper conveying direction, so that the paper is shifted to the left and right sides respectively.

3. The paper stacking device as described in claim 1, characterized in that, Each paper feed roller assembly includes two rows of paper feed rollers arranged side by side.

4. The paper stacking device as described in claim 1, characterized in that, In each paper feed roller assembly, the paper feed rollers at both ends along the paper conveying direction are densely arranged, while the paper feed rollers in the middle part are sparsely arranged.

5. The paper stacking device as described in claim 2, characterized in that, The first mounting hole (64) has a cross-shaped structure, and the axle is mounted in the first mounting hole (64).

6. The paper stacking device as described in claim 1, characterized in that, The first supporting bracket includes a first supporting plate (61) for mounting the first paper feed roller assembly and a first connecting plate (63) connected to the first supporting plate (61); the first swing rod (210) is hinged to the first connecting plate (63); Correspondingly, the second swing arm (28) is hinged to the second connecting plate (13) of the second matching bracket.

7. The paper stacking device as described in claim 1, characterized in that, On the left and right sides of the transmission platform (7), there are a first positioning baffle (9) that aligns with the first position of the paper stack and a second positioning baffle (10) that aligns with the second position of the paper stack.

8. The paper stacking device as described in claim 1, characterized in that, The swing wheel drive mechanism (2) further includes a first shaft (22) mounted on the frame (5), a first connecting rod (211) and a second connecting rod (27) rotatably mounted on the first shaft (22); the first connecting rod (211) is hinged to the first swing rod (210) through a first short shaft, and is hinged to the first matching bracket through a second short shaft (212); The second connecting rod (27) is hinged to the second swing rod (28) via the third short shaft (215) and to the second matching bracket via the fourth short shaft (216).

9. The paper stacking device as described in claim 8, characterized in that, The swing wheel drive mechanism (2) further includes a second shaft (25) mounted on the frame (5) and arranged behind the first shaft (22), a third link (213) and a fourth link (214) rotatably mounted on the second shaft (25); wherein the third link (213) is connected to the first link (211) through a first transmission rod (23); and the fourth link (214) is connected to the second link (27) through a second transmission rod (24). The first link (211) and the third link (213) are hinged one in front of the other on the first matching bracket along the paper conveying direction; the second link (27) and the fourth link (214) are hinged one in front of the other on the second matching bracket along the paper conveying direction.

10. A printer, characterized in that, Includes a paper stacking device as described in any one of claims 1-9.

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