Printer paper channel switching mechanism
By designing a paper path switching mechanism for the printer, which uses the paper output tray to drive the guide plate to switch the guide vanes, the problem of users having difficulty switching paper paths freely is solved. This enables fast and accurate switching of printing modes, avoids paper jams, and improves the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HUAGAO INFORMATION TECH CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-14
AI Technical Summary
In existing automatic printing trace systems, users find it difficult to freely switch paper paths to switch between single-sided and double-sided printing modes.
A printer paper path switching mechanism was designed, including a paper path switching guide plate and a paper output tray. By rotating the paper output tray, the guide plate is driven to switch the position of the guide plate, thereby realizing the connection and switching between the printing channel and the paper output channel or the transfer channel.
It enables quick and accurate paper path switching based on needs, avoids paper jams, simplifies the printing mode switching process, and improves the user experience.
Smart Images
Figure CN224116990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printer technology, specifically to a printer paper track switching mechanism. Background Technology
[0002] Automatic printing with traces involves digitizing students' assignments or exams using a printer. The digitized assignments or exams are then processed by a calculation module for data comparison and calculation. Finally, the results are printed onto the assignments or exams. This not only reduces the workload of teachers in grading exams but also leaves grading marks on the original papers, facilitating subsequent explanations by teachers and review by students.
[0003] Most existing automatic print tracking systems first scan the document using a printer, then transport it to the printer via a transfer channel, and finally print it based on the calculation results. Paper printing can be single-sided or double-sided. To simplify the printer structure, two single-sided printers can be stacked to achieve double-sided printing. For single-sided printing, the output tray of the upper printer is opened, and the print path is connected to the output path. For double-sided printing, the output tray of the upper printer is closed, and the print path is connected to the transfer channel. The paper printed on one side passes through the transfer channel to the lower printer for printing the other side. However, how to freely switch the paper path between single-sided and double-sided printing modes to ensure connectivity between the print path and the output or transfer channel remains a pressing issue. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a printer paper track switching mechanism that can freely switch paper tracks according to needs.
[0005] The technical solution of this utility model is to provide a printer paper path switching mechanism with the following structure: including a printer body and a paper path switching guide plate and a paper output tray disposed on the printer body; the printer body is provided with a printing channel, a paper output channel and a transfer channel; the paper path switching guide plate is rotatably connected to the intersection of the printing channel, the paper output channel and the transfer channel; the paper output tray is rotatably connected to the paper output port at the outer end of the paper output channel and is drivenly connected to the paper path switching guide plate;
[0006] The paper path switching guide plate includes a guide plate body rotatably connected to the printer body and a number of guide plates evenly spaced along the axial direction of the guide plate body; the guide plates are triangular in shape, with a first guide surface at the top and a second guide surface that extends downward at an angle and is arc-shaped on one side wall near the printing channel.
[0007] When the paper output tray rotates to the paper output port closed, the first guide surface of the guide plate is in contact with the top wall inside the printing channel, and a gap is formed between the second guide surface and the printer body, connecting the printing channel and the transfer channel; when the paper output tray rotates to the paper output port open, the second guide surface of the guide plate is in contact with the bottom wall inside the printing channel, and a gap is formed between the first guide surface and the printer body, connecting the printing channel and the paper output channel.
[0008] With the above structure, the printer paper path switching mechanism of this utility model has the following advantages compared with the prior art:
[0009] This invention utilizes the rotation of the paper output tray to drive the paper path switching guide plate. When double-sided printing is required, the paper output tray is rotated until the paper output port is closed. At this time, the first guide surface of the guide plate is in contact with the top wall of the printing channel, closing the paper output channel and creating a gap between the second guide surface and the printer body, connecting the printing channel and the transfer channel. Paper printed on one side will then enter the next printer via the transfer channel for printing on the other side. When single-sided printing is required, the paper output tray can be rotated until the paper output port is fully open. At this time, the second guide surface of the guide plate is in contact with the bottom wall of the printing channel, closing the transfer channel and creating a gap between the first guide surface and the printer body, connecting the printing channel and the paper output channel. Paper printed on one side will then be directly output from the paper output channel. This invention has a simple structure and allows for free switching of the paper path as needed. Furthermore, since the paper path switching guide plate is driven by rotating the paper output tray, the user can quickly and accurately determine the current printing mode based on the state of the paper output tray.
[0010] Preferably, the first guide surface is curved, gradually rising from one end near the printing channel to the other, to raise the paper output height. This design facilitates paper output and prevents paper jamming.
[0011] Preferably, the first guide surface has several extensions spaced apart along the axis of the paper path switching guide plate at one end near the paper outlet. These extensions are used to extend into the gap of the paper feed rollers. During single-sided printing, the paper is directly conveyed to the paper feed rollers at the paper outlet by the guide of the first guide surface, preventing the paper from getting stuck in the gap between the first guide surface and the paper feed rollers.
[0012] Preferably, the inner top wall at the end of the printing channel is provided with a plurality of first receiving grooves that are evenly spaced along its width and recessed upwards. Each of the first receiving grooves corresponds to a guide plate and is used to accommodate the end of the guide plate near the printing channel. With this configuration, during double-sided printing, the end of the guide plate can be hidden in the first receiving groove, preventing paper from getting stuck in the gap between the first guide surface and the inner top wall of the printing channel.
[0013] Preferably, the inner bottom wall at the end of the printing channel is provided with a plurality of second receiving grooves that are evenly spaced along its width and recessed downwards. Each of the second receiving grooves corresponds to a guide plate and is used to accommodate the end of the guide plate near the printing channel. With this configuration, during single-sided printing, the end of the guide plate can be hidden in the second receiving groove, preventing paper from getting stuck in the gap between the second guide surface and the inner bottom wall of the printing channel.
[0014] Preferably, the paper path switching guide plate has connecting holes and connecting posts on both sides of its side walls. A push rod is rotatably connected to the connecting hole. The printer body has a horizontally arranged guide groove. The push rod is fitted into the guide groove with a clearance, and the free end of the push rod passes through the guide groove to abut against the inner end face of the paper output tray. A spring is connected to the connecting post, and the other end of the spring is connected to the printer body to force the second guide surface of the paper path switching guide plate to fit against the bottom wall of the printing channel.
[0015] When the paper output tray rotates to the paper output port closed, the inner end face of the paper output tray pushes against the free end of the push rod. The paper path switching guide plate overcomes the spring force and makes its first guide surface fit against the top wall of the printing channel. When the paper output tray rotates to the paper output port open, the push rod loses the pushing force of the paper output tray. At this time, the paper path switching guide plate is reset under the action of the spring force, so that the second guide surface fits against the bottom wall of the printing channel, completing the paper path switching. This utility model can realize the transmission between the paper output tray and the paper path switching guide plate through the simple cooperation of the push rod and the spring. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a cross-sectional view of the present invention in double-sided printing mode.
[0018] Figure 3 This is a cross-sectional view of the present invention in single-sided printing mode.
[0019] Figure 4 This is a schematic diagram of the paper path switching guide plate in this utility model.
[0020] Figure 5 This is a structural schematic diagram of the paper path switching guide plate in this utility model from another view perspective.
[0021] Figure 6 This is a partial structural schematic diagram of the present invention.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Printer body; 11. Printing channel; 111. First receiving slot; 112. Second receiving slot; 12. Paper output channel; 13. Transfer channel; 14. Guide slot; 2. Paper path switching guide plate; 21. Guide plate body; 22. Guide plate; 221. First guide surface; 2211. Extension; 222. Second guide surface; 23. Connecting hole; 24. Connecting post; 25. Push rod; 26. Spring; 3. Paper output tray. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc., are only used to distinguish the names of various components and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.
[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown;
[0027] This utility model discloses a printer paper path switching mechanism, including a printer body 1 and a paper path switching guide plate 2 and a paper output tray 3 disposed on the printer body 1.
[0028] The printer body 1 is provided with a printing channel 11, a paper output channel 12 and a transfer channel 13. The paper path switching guide plate 2 is rotatably connected to the intersection of the printing channel 11, the paper output channel 12 and the transfer channel 13. The paper output tray 3 is rotatably connected to the paper output port at the outer end of the paper output channel 12 and is connected to the paper path switching guide plate 2 in a transmission manner.
[0029] The paper path switching guide plate 2 includes a guide plate body 21 rotatably connected to the printer body 1 and a number of guide plates 22 evenly spaced along the axial direction of the guide plate body 21; the guide plates 22 are triangularly arranged, with a first guide surface 221 at the top and a second guide surface 222 extending downward at an angle and in an arc shape on one side wall near the printing channel 11.
[0030] When the paper output tray 3 rotates to the paper output port closed, the first guide surface 221 of the guide plate 22 is in contact with the inner top wall of the printing channel 11, and a gap is formed between the second guide surface 222 and the printer body 1, connecting the printing channel 11 and the transfer channel 13; when the paper output tray 3 rotates to the paper output port open, the second guide surface 222 of the guide plate 22 is in contact with the inner bottom wall of the printing channel 11, and a gap is formed between the first guide surface 221 and the printer body 1, connecting the printing channel 11 and the paper output channel 12.
[0031] like Figure 2-5 As shown, the first guide surface 221 has an arc shape that gradually rises from one end near the printing channel 11 to the other end, in order to raise the height of the paper output, thereby facilitating paper output and avoiding paper jams.
[0032] like Figure 5 As shown, the first guide surface 221 has several extensions 2211 spaced apart along the axis of the paper path switching guide plate 2 at one end near the paper outlet. The extensions 2211 are used to extend into the gap of the paper feed rollers. During single-sided printing, the paper is directly conveyed to the paper feed rollers at the paper outlet by the guide of the first guide surface 221, preventing the paper from getting stuck in the gap between the first guide surface 221 and the paper feed rollers.
[0033] like Figure 2 and Figure 3 As shown, the inner top wall at the end of the printing channel 11 is provided with a plurality of first receiving grooves 111 that are evenly spaced along its width direction and are recessed upward. The first receiving grooves 111 correspond one-to-one with the guide plate 22 and are used to accommodate one end of the guide plate 22 near the printing channel 11. In this way, when performing double-sided printing, the end of the guide plate 22 can be hidden in the first receiving groove 111 to prevent the paper from getting stuck in the gap between the first guide surface 221 and the inner top wall of the printing channel 11.
[0034] Similarly, the inner bottom wall at the end of the printing channel 11 is provided with a plurality of second receiving grooves 112 that are evenly spaced along its width direction and recessed downward. The second receiving grooves 112 correspond one-to-one with the guide plate 22 and are used to accommodate one end of the guide plate 22 near the printing channel 11. In this way, when printing on one side, the end of the guide plate 22 can be hidden in the second receiving groove 112 to prevent the paper from getting stuck in the gap between the second guide surface 222 and the inner bottom wall of the printing channel 11.
[0035] like Figure 6As shown, the paper path switching guide plate 2 has connecting holes 23 and connecting posts 24 on both sides of its side walls. A push rod 25 is rotatably connected to the connecting hole 23. The printer body 1 has a horizontally arranged guide groove 14. The push rod 25 is fitted into the guide groove 14 with a clearance, and the free end of the push rod 25 passes through the guide groove 14 to abut against the inner end face of the paper output tray 3. A spring 26 is connected to the connecting post 24. The other end of the spring 26 is connected to the printer body 1 to force the second guide surface 222 of the paper path switching guide plate 2 to fit against the inner bottom wall of the printing channel 11.
[0036] When the paper output tray 3 rotates to the paper output port closed, the inner end face of the paper output tray 3 pushes the free end of the push rod 25, and the paper path switching guide plate 2 overcomes the elastic force of the spring 26, so that its first guide surface 221 is in contact with the inner top wall of the printing channel 11; when the paper output tray 3 rotates to the paper output port open, the push rod 25 loses the pushing force of the paper output tray 3, and at this time the paper path switching guide plate 2 is reset under the elastic force of the spring 26, so that the second guide surface 222 is in contact with the inner bottom wall of the printing channel 11, and the paper path switching is completed; this utility model can realize the transmission between the paper output tray 3 and the paper path switching guide plate 2 through the simple cooperation of the push rod 25 and the spring 26.
[0037] This invention allows the paper output tray 3 to rotate, thereby driving the paper path switching guide plate 2 to rotate. When the user needs double-sided printing, the paper output tray 3 is rotated until the paper output port is closed. At this time, the first guide surface 221 of the guide plate 22 is in contact with the inner top wall of the printing channel 11, closing the paper output channel 12 and creating a gap between the second guide surface 222 and the printer body 1 that connects the printing channel 11 and the transfer channel 13. Paper printed on one side will enter the next printer through the transfer channel 13 for printing on the other side. When the user needs single-sided printing, the paper output tray 3 can be rotated until the paper output port is fully open. At this time, the second guide surface 222 of the guide plate 22 is in contact with the inner bottom wall of the printing channel 11, closing the transfer channel 13 and creating a gap between the first guide surface 221 and the printer body 1 that connects the printing channel 11 and the paper output channel 12, allowing single-sided printed paper to be output directly from the paper output channel 12.
[0038] This utility model has a simple structure and can freely switch the paper path according to needs. Since the paper path switching guide plate 2 is driven by rotating the paper output tray 3, the user can quickly and accurately determine the current printing mode based on the state of the paper output tray 3.
[0039] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A paper path switching mechanism for a printer, characterized in that: The printer includes a printer body (1) and a paper path switching guide plate (2) and a paper output tray (3) disposed on the printer body (1); the printer body (1) is provided with a printing channel (11), a paper output channel (12) and a transfer channel (13); the paper path switching guide plate (2) is rotatably connected to the intersection of the printing channel (11), the paper output channel (12) and the transfer channel (13); the paper output tray (3) is rotatably connected to the paper output port at the outer end of the paper output channel (12) and is connected to the paper path switching guide plate (2) in a transmission manner. The paper path switching guide plate (2) includes a guide plate body (21) rotatably connected to the printer body (1) and a plurality of guide plates (22) evenly spaced along the axial direction of the guide plate body (21); the guide plates (22) are triangular in shape, with a first guide surface (221) at the top and a second guide surface (222) extending downward at an angle and in an arc shape on one side wall near the printing channel (11). When the paper output tray (3) rotates to the paper output port closed, the first guide surface (221) of the guide plate (22) is in contact with the inner top wall of the printing channel (11), and a gap is formed between the second guide surface (222) and the printer body (1) connecting the printing channel (11) and the transfer channel (13); when the paper output tray (3) rotates to the paper output port open, the second guide surface (222) of the guide plate (22) is in contact with the inner bottom wall of the printing channel (11), and a gap is formed between the first guide surface (221) and the printer body (1) connecting the printing channel (11) and the paper output channel (12).
2. The printer paper track switching mechanism according to claim 1, characterized in that: The first guide surface (221) is in an arc shape that gradually rises from one end near the printing channel (11) to the other end, in order to raise the height of the paper output.
3. The printer paper track switching mechanism according to claim 2, characterized in that: The first guide surface (221) has several extensions (2211) at intervals along the axis of the paper path switching guide plate (2) at one end near the paper outlet. The extensions (2211) are used to extend into the gap of the paper feed roller.
4. The printer paper track switching mechanism according to claim 1, characterized in that: The inner top wall at the end of the printing channel (11) is provided with a plurality of first receiving grooves (111) that are evenly spaced along its width direction and recessed upward. The first receiving grooves (111) correspond one-to-one with the guide plate (22) and are used to accommodate the end of the guide plate (22) near the printing channel (11).
5. The printer paper track switching mechanism according to claim 1, characterized in that: The inner bottom wall at the end of the printing channel (11) is provided with a number of second receiving grooves (112) that are evenly spaced along its width direction and recessed downwards. The second receiving grooves (112) correspond one-to-one with the guide plate (22) and are used to accommodate the end of the guide plate (22) near the printing channel (11).
6. The printer paper track switching mechanism according to claim 1, characterized in that: The paper path switching guide plate (2) has connecting holes (23) and connecting posts (24) on both sides. A push rod (25) is rotatably connected to the connecting hole (23). The printer body (1) has a horizontally arranged guide groove (14). The push rod (25) is fitted into the guide groove (14) with a clearance, and the free end of the push rod (25) passes through the guide groove (14) to abut against the inner end face of the paper output tray (3). A spring (26) is connected to the connecting post (24). The other end of the spring (26) is connected to the printer body (1) to force the second guide surface (222) of the paper path switching guide plate (2) to fit against the inner bottom wall of the printing channel (11).