An output device for printing and method of use

Abstract

The application belongs to the technical field of printing, and particularly relates to a printing output device and method. In view of the problem that the existing structure for turning over paper is not simple enough and the turning over effect is not good enough, the following scheme is proposed. The device comprises a base, a support frame fixedly installed on the top of the base, two side plates fixedly installed on the top of the base, the two side plates being fixedly installed on one side of the support frame, two sliding installation blocks slidably connected to the two side plates through sliding grooves, and a first rotating shaft and a second rotating shaft rotatably installed on the side of the two sliding installation blocks close to each other. In the application, the device can clamp, move and turn over the paper, has a good protection effect on the paper, can prevent the paper from being wrinkled, has a simple structure for turning over the paper, has a good turning over effect, is convenient to manufacture, can adjust the position of the third rack by rotating, can conveniently take out the paper, is convenient to operate, and is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of printing technology, and in particular to an output device for printing and a method of using it. Background Technology

[0002] A printer is a computer output device used to print computer-processed results onto relevant media. There are many types of printers. Based on whether the printing element strikes the paper, they are divided into impact printers and non-impact printers. Based on the structure of the printed characters, they are divided into full-character printers and dot-matrix character printers.

[0003] However, existing printing output devices still have the following problems when in use:

[0004] Existing devices for printing paper have an insufficiently simple paper-flipping structure, resulting in poor flipping performance and a tendency to produce paper wrinkles, which negatively impacts print quality.

[0005] To address the above-mentioned problems, this invention proposes an output device for printing and a method of using it. Summary of the Invention

[0006] This invention provides an output device and method for printing, which solves the shortcomings of existing technologies where the paper-turning structure is not simple enough and the page-turning effect is not good enough.

[0007] This invention provides the following technical solution:

[0008] An output device for printing, comprising:

[0009] The base has a support frame fixedly installed on its top, and two side plates fixedly installed on its top. The two side plates are fixedly installed on one side of the support frame. The two side plates are slidably connected to sliding mounting blocks via sliding grooves. A first rotating shaft and a second rotating shaft are rotatably installed on the side of the two sliding mounting blocks that are close to each other.

[0010] A printhead, with a mounting plate fixedly installed on the top of the printhead, a first fixing block fixedly installed on the top of the mounting plate, and an electric push rod fixedly installed on one side of the support frame, with one end of the output shaft of the electric push rod fixedly connected to the first fixing block;

[0011] A clamping assembly is fixedly installed between a first rotating shaft and a second rotating shaft, and the clamping assembly is used to fix the paper.

[0012] A flipping component for flipping the paper.

[0013] In one possible design, the clamping assembly includes two fixed plates, which are respectively fixedly connected to one end of a first rotating shaft and a second rotating shaft. Two unfolding slots are formed on the side of the two fixed plates that are close to each other. Two first support plates and two second support plates are slidably connected between the two unfolding slots located on the same horizontal plane. A bidirectional screw is rotatably mounted on one side of each of the two fixed plates. A second gear is fixedly installed at one end of the bidirectional screw. A connecting block is fixedly installed on one side of each of the two first support plates and the second support plate. The two connecting blocks located on the same side are threadedly connected to the bidirectional screw, and the two connecting blocks are respectively located on two opposite threads of the bidirectional screw.

[0014] In one possible design, the flipping assembly includes a motor fixedly mounted on one side of a support frame, a lead screw fixedly mounted on the output shaft of the motor, the other end of the lead screw being rotatably connected to a side plate, the lead screw being threadedly connected to a sliding mounting block on one side, a one-way bearing fixedly sleeved on the outer wall of the first rotating shaft, a first gear fixedly sleeved on the outer wall of the one-way bearing, and a first rack fixedly mounted on one side of the side plate, the first rack engaging with the first gear.

[0015] In one possible design, a third gear is fixedly installed on the outer wall of the second shaft, a locking box is fixedly installed on the side of the side plate, a locking slider is slidably connected to the inner wall of the locking box, a plurality of locking teeth are provided on one side of the locking slider, the plurality of locking teeth cooperate with the third gear, and two locking springs are fixedly installed on one side of the inner wall of the locking box, the other end of each of the two locking springs is fixedly connected to one side of the locking slider.

[0016] In one possible design, two second racks are fixedly mounted on the bottom of the mounting plate, and the two second racks respectively engage with two second gears.

[0017] In one possible design, a second fixing block is fixedly installed on both sides of the mounting plate. A clearance groove is formed on one side of the second fixing block. A fixing rod is fixedly installed on the inner wall of one side of the second fixing block. A gear groove and a first spring are sleeved on the outer wall of the fixing rod. One end of the first spring is fixedly connected to one side of the gear groove, and the other end of the first spring is fixedly connected to the inner wall of one side of the clearance groove. The gear groove and the clearance groove are slidably connected. A pressing rod is slidably sleeved on the outer wall of the fixing rod. A rotating mounting block is rotatably connected to the outer wall of the pressing rod. A gear block is fixedly installed on one side of the rotating mounting block. One end of the pressing rod passes through the gear block and abuts against the gear groove. The gear block and the gear groove cooperate. A third rack is fixedly installed at the bottom of the rotating mounting block. Two third racks respectively cooperate with two corresponding second gears. A limit plate is fixedly installed on the outer wall of the pressing rod. A second spring is sleeved on the outer wall of the pressing rod. One end of the second spring is fixedly connected to one side of the limit plate, and the other end of the second spring is fixedly connected to one side of the gear block.

[0018] In one possible design, the two third racks are located on the side of the mounting plate away from the first rack.

[0019] A method of using a printing output device includes the following steps:

[0020] S1. In use, the user can place the paper between the first support plate and the second support plate. Then, the user can control the electric push rod to drive the print head to descend. When the print head descends, the mounting plate will also descend. The second rack at the bottom of the mounting plate will mesh with the corresponding second gear on the upper side. At this time, the second gear will drive the bidirectional screw to rotate as the mounting plate descends. When the bidirectional screw rotates, it will open the two first support plates or two second support plates located above, so as to facilitate the print head to print the paper. After printing, control the electric push rod again to raise the print head. At this time, the above operation will be reversed to close the unfolded first support plate or second support plate.

[0021] S2. Next, the user can control the motor to make the lead screw drive the sliding mounting block to move. At this time, the first and second rotating shafts will drive the central support plate and the paper to move together. When it moves to the position of the first rack, the first gear will mesh with the first rack to complete the flipping of the paper. After the flipping is completed, control the motor to rotate in the opposite direction to retract the paper. Since the first gear is equipped with a one-way bearing, the one-way bearing cannot drive the first rotating shaft to rotate during the return process, thus ensuring that the flipping effect of the paper is not affected when it is retracted.

[0022] S3. When the paper returns to its original position, the third gear on the second rotating shaft will press the locking slider to retract it into the locking box. Then, under the action of the locking spring, the locking teeth on one side of the locking slider will limit and fix the third gear, which can ensure that the first and second rotating shafts will not shake during the printing process.

[0023] S4. Following the above steps, print on the other side of the paper. After printing, before the print head rises, the user can release the gear slot from the gear block by pressing the levers on both sides. At this time, the two third racks can be rotated from above the mounting plate to below the mounting plate and mesh with the second gear on that side. Then, the mounting plate can be raised again. The third racks can then mesh with the second gear on the bottom side to unfold the first or second support plate at the bottom, making it easy for the user to remove the printed paper.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0025] In this invention, the device can clamp, move, and flip the paper, providing good protection for the paper and preventing it from wrinkling. The flipping structure is simple, the flipping effect is good, and it is easy to manufacture. At the same time, the position of the third toothed rack can be adjusted by rotation to easily remove the paper, making it easy to operate and use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a printing output device provided in an embodiment of the present invention;

[0027] Figure 2 This is a top view of an output device for printing provided in an embodiment of the present invention;

[0028] Figure 3 This is an enlarged structural schematic diagram of a clamping assembly for a printing output device provided in an embodiment of the present invention;

[0029] Figure 4 This is a side cross-sectional view of an output device for printing provided in an embodiment of the present invention;

[0030] Figure 5 This is an enlarged structural diagram of part A of a printing output device provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the main structure of a printing output device provided in an embodiment of the present invention;

[0032] Figure 7This is a schematic diagram of the third rack mounting structure of a printing output device provided in an embodiment of the present invention.

[0033] Figure label:

[0034] 1. Base; 2. Side plate; 3. Support frame; 4. Motor; 5. Lead screw; 6. Sliding mounting block; 7. First rotating shaft; 8. Second rotating shaft; 9. One-way bearing; 10. First gear; 11. First rack; 12. Fixing plate; 13. Unfolding slot; 14. First support plate; 15. Second support plate; 16. Connecting block; 17. Bidirectional screw; 18. Second gear; 19. Third gear; 20. Locking box; 21. Locking slider; 22. Clamping tooth; 23. Locking spring; 24. Electric push rod; 25. First fixing block; 26. Mounting plate; 27. Print head; 28. Second rack; 29. ​​Second fixing block; 30. Clearance slot; 31. Fixing rod; 32. Gear groove; 33. First spring; 34. Rotating mounting block; 35. Third rack; 36. Gear block; 37. Pressing rod; 38. Second spring; 39. Limiting plate. Detailed Implementation

[0035] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to 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 the embodiments of the present invention.

[0037] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0038] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0040] Reference Figure 1-7 An output device for printing, comprising:

[0041] The base 1 has a support frame 3 fixedly installed on its top. Two side plates 2 are fixedly installed on the top of the base 1. Both side plates 2 are fixedly installed on one side of the support frame 3. Both side plates 2 are slidably connected to sliding mounting blocks 6 through sliding grooves. The first rotating shaft 7 and the second rotating shaft 8 are respectively rotatably installed on the side of the two sliding mounting blocks 6 that are close to each other.

[0042] The print head 27 has a mounting plate 26 fixedly mounted on its top, and a first fixing block 25 fixedly mounted on the top of the mounting plate 26. An electric push rod 24 is fixedly mounted on one side of the support frame 3. One end of the output shaft of the electric push rod 24 is fixedly connected to the first fixing block 25. The print head is the same as that in the patent with publication number CN116394663A.

[0043] A clamping assembly is fixedly installed between the first rotating shaft 7 and the second rotating shaft 8, and is used to fix the paper.

[0044] The flip component is used to flip the paper.

[0045] The above technical solution can realize an output device for printing. This device can clamp, move and flip the paper, which has a good protective effect on the paper and makes the paper less prone to wrinkles. Moreover, the structure for flipping the paper is simple, the flipping effect is good, the printing process is simple, it is easy to operate, and it can achieve good printing results.

[0046] Reference Figure 3In this embodiment, the clamping assembly includes two fixing plates 12, which are fixedly connected to one end of the first rotating shaft 7 and the second rotating shaft 8, respectively. Two unfolding slots 13 are opened on the side of the two fixing plates 12 that are close to each other. Two first support plates 14 and two second support plates 15 are slidably connected between the two unfolding slots 13 located on the same horizontal plane. A bidirectional screw 17 is rotatably mounted on one side of the two fixing plates 12. A second gear 18 is fixedly installed on one end of the bidirectional screw 17. A connecting block 16 is fixedly installed on one side of the two first support plates 14 and the second support plates 15. The two connecting blocks 16 located on the same side are threadedly connected to the bidirectional screw 17 and the two connecting blocks 16 are respectively located on two opposite threads of the bidirectional screw 17.

[0047] The above technical solution can clamp and place the paper, making it easy to support it during printing. It can also prevent the paper from wrinkling and can unfold the top support plate before printing, making printing convenient and achieving good results.

[0048] Reference Figure 2 In this embodiment, the flipping assembly includes a motor 4 fixedly installed on one side of the support frame 3. A lead screw 5 is fixedly installed on the output shaft of the motor 4. The other end of the lead screw 5 is rotatably connected to the side plate 2. The lead screw 5 is threadedly connected to a sliding mounting block 6 on one side. A one-way bearing 9 is fixedly sleeved on the outer wall of the first rotating shaft 7. A first gear 10 is fixedly sleeved on the outer wall of the one-way bearing 9. A first rack 11 is fixedly installed on one side of the side plate 2. The first rack 11 cooperates with the first gear 10.

[0049] The above technical solution can flip the paper, and the flipping effect is good and easy to use.

[0050] Example 2

[0051] Reference Figure 1-7 An output device for printing, comprising:

[0052] The base 1 has a support frame 3 fixedly installed on its top. Two side plates 2 are fixedly installed on the top of the base 1. Both side plates 2 are fixedly installed on one side of the support frame 3. Both side plates 2 are slidably connected to sliding mounting blocks 6 through sliding grooves. The first rotating shaft 7 and the second rotating shaft 8 are respectively rotatably installed on the side of the two sliding mounting blocks 6 that are close to each other.

[0053] Print head 27, mounting plate 26 is fixedly installed on top of print head 27, first fixing block 25 is fixedly installed on top of mounting plate 26, electric push rod 24 is fixedly installed on one side of support frame 3, and one end of the output shaft of electric push rod 24 is fixedly connected to the first fixing block 25.

[0054] A clamping assembly is fixedly installed between the first rotating shaft 7 and the second rotating shaft 8, and is used to fix the paper.

[0055] The flip component is used to flip the paper.

[0056] The above technical solution can realize an output device for printing. This device can clamp, move and flip the paper, which has a good protective effect on the paper and makes the paper less prone to wrinkles. Moreover, the structure for flipping the paper is simple, the flipping effect is good, the printing process is simple, it is easy to operate, and it can achieve good printing results.

[0057] Reference Figure 3 In this embodiment, the clamping assembly includes two fixing plates 12, which are fixedly connected to one end of the first rotating shaft 7 and the second rotating shaft 8, respectively. Two unfolding slots 13 are opened on the side of the two fixing plates 12 that are close to each other. Two first support plates 14 and two second support plates 15 are slidably connected between the two unfolding slots 13 located on the same horizontal plane. A bidirectional screw 17 is rotatably mounted on one side of the two fixing plates 12. A second gear 18 is fixedly installed on one end of the bidirectional screw 17. A connecting block 16 is fixedly installed on one side of the two first support plates 14 and the second support plates 15. The two connecting blocks 16 located on the same side are threadedly connected to the bidirectional screw 17 and the two connecting blocks 16 are respectively located on two opposite threads of the bidirectional screw 17.

[0058] The above technical solution can clamp and place the paper, making it easy to support it during printing. It can also prevent the paper from wrinkling and can unfold the top support plate before printing, making printing convenient and achieving good results.

[0059] Reference Figure 2 In this embodiment, the flipping assembly includes a motor 4 fixedly installed on one side of the support frame 3. A lead screw 5 is fixedly installed on the output shaft of the motor 4. The other end of the lead screw 5 is rotatably connected to the side plate 2. The lead screw 5 is threadedly connected to a sliding mounting block 6 on one side. A one-way bearing 9 is fixedly sleeved on the outer wall of the first rotating shaft 7. A first gear 10 is fixedly sleeved on the outer wall of the one-way bearing 9. A first rack 11 is fixedly installed on one side of the side plate 2. The first rack 11 cooperates with the first gear 10.

[0060] The above technical solution can flip the paper, and the flipping effect is good and easy to use.

[0061] Reference Figure 4 , 5In this embodiment, a third gear 19 is fixedly installed on the outer wall of the second rotating shaft 8, and a locking box 20 is fixedly installed on the side of the side plate 2 near the 8. A locking slider 21 is slidably connected to the inner wall of the locking box 20. A plurality of locking teeth 22 are provided on one side of the locking slider 21, and the plurality of locking teeth 22 cooperate with the third gear 19. Two locking springs 23 are fixedly installed on one side of the inner wall of the locking box 20, and the other end of each of the two locking springs 23 is fixedly connected to one side of the locking slider 21.

[0062] The above technical solution can fix the clamping components and prevent them from shaking during the printing process.

[0063] Reference Figure 6 In this embodiment, two second racks 28 are fixedly installed on the bottom of the mounting plate 26, and the two second racks 28 respectively cooperate with two second gears 18.

[0064] The above technical solution allows the top support plate to be easily retracted or extended as the print head 27 is raised or lowered.

[0065] Reference Figure 7 In this embodiment, second fixing blocks 29 are fixedly installed on both sides of the mounting plate 26. A clearance groove 30 is provided on one side of the second fixing block 29. A fixing rod 31 is fixedly installed on the inner wall of one side of the second fixing block 29. A gear groove 32 and a first spring 33 are sleeved on the outer wall of the fixing rod 31. One end of the first spring 33 is fixedly connected to one side of the gear groove 32, and the other end of the first spring 33 is fixedly connected to the inner wall of one side of the clearance groove 30. The gear groove 32 and the clearance groove 30 are slidably connected. A pressing rod 37 is slidably sleeved on the outer wall of the fixing rod 31. A rotating mounting block is rotatably connected to the outer wall of the pressing rod 37. 34. A gear block 36 is fixedly installed on one side of the rotating mounting block 34. One end of the pressing rod 37 passes through the gear block 36 and abuts against the gear groove 32. The gear block 36 and the gear groove 32 cooperate. A third rack 35 is fixedly installed at the bottom of the rotating mounting block 34. The two third racks 35 cooperate with the two corresponding second gears 18 respectively. A limit plate 39 is fixedly installed on the outer wall of the pressing rod 37. A second spring 38 is sleeved on the outer wall of the pressing rod 37. One end of the second spring 38 is fixedly connected to one side of the limit plate 39, and the other end of the second spring 38 is fixedly connected to one side of the gear block 36.

[0066] The above technical solution allows the third rack 35 to be easily stored or lowered, facilitating the unfolding of the bottom support plate and making it easy to remove the paper.

[0067] Reference Figure 1 , 7 In this embodiment, the two third racks 35 are located on the side of the mounting plate 26 away from the first rack 11.

[0068] The above technical solution can easily ensure that the third rack 35 can always mesh with the second gear 18 located at the bottom.

[0069] A method of using a printing output device includes the following steps:

[0070] S1. In use, the user can place the paper between the first support plate 14 and the second support plate 15. Then, the user can control the electric push rod 24 to drive the print head 27 to descend. When the print head 27 descends, the mounting plate 26 will also descend. The second rack 28 at the bottom of the mounting plate 26 will mesh with the corresponding second gear 18 located on the upper side. At this time, the second gear 18 will drive the bidirectional screw 17 to rotate as the mounting plate 26 descends. When the bidirectional screw 17 rotates, it will open the two first support plates 14 or the two second support plates 15 located above, so as to facilitate the print head 27 to print the paper. After printing, the user can control the electric push rod 24 again to raise the print head 27. At this time, the above operation will be reversed to close the unfolded first support plate 14 or second support plate 15.

[0071] S2. Next, the user can control the motor 4 to make the lead screw 5 drive the sliding mounting block 6 to move. At this time, the first rotating shaft 7 and the second rotating shaft 8 will drive the central support plate and the paper to move together. When it moves to the position of the first rack 11, the first gear 10 will mesh with the first rack 11 to complete the flipping of the paper. After the flipping is completed, control the motor 4 to rotate in the opposite direction to retract the paper. Since the first gear 10 is equipped with a one-way bearing 9, the one-way bearing 9 cannot drive the first rotating shaft 7 to rotate during the return process. Therefore, it can be ensured that the flipping effect of the paper is not affected when it is retracted.

[0072] S3. When the paper returns to its original position, the third gear 19 located on the second rotating shaft 8 will press the locking slider 21 to retract it into the locking box 20. Then, under the action of the locking spring 23, the locking teeth 22 on one side of the locking slider 21 will limit and fix the third gear 19, which can ensure that the first rotating shaft 7 and the second rotating shaft 8 will not shake during the printing process.

[0073] S4. Following the above operation, printing can be performed on the other side of the paper. After this printing is completed, before the print head 27 rises, the user can release the gear slot 32 from the gear block 36 by pressing the pressing levers 37 on both sides. At this time, the two third racks 35 can be rotated from above the mounting plate 26 to below the mounting plate 26 and mesh with the second gear 18 located on that side. Then, the mounting plate 26 can be raised again. At this time, the third rack 35 can mesh with the second gear 18 located on the bottom side to unfold the first support plate 14 or the second support plate 15 located at the bottom, making it convenient for the user to take out the printed paper.

[0074] However, as is well known to those skilled in the art, the working principle and wiring method of motor 4 and electric push rod 24 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0075] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An output device for printing, comprising: The base has a support frame fixedly installed on its top, and two side plates fixedly installed on its top. The two side plates are fixedly installed on one side of the support frame. The two side plates are slidably connected to sliding mounting blocks via sliding grooves. A first rotating shaft and a second rotating shaft are rotatably installed on the side of the two sliding mounting blocks that are close to each other. A printhead, wherein a mounting plate is fixedly mounted on the top of the printhead, a first fixing block is fixedly mounted on the top of the mounting plate, an electric push rod is fixedly mounted on one side of the support frame, and one end of the output shaft of the electric push rod is fixedly connected to the first fixing block, characterized in that it further includes: A clamping assembly is fixedly installed between a first rotating shaft and a second rotating shaft, and the clamping assembly is used to fix the paper. A flipping assembly for flipping paper is included. The clamping assembly comprises two fixed plates, each fixedly connected to one end of a first rotating shaft and a second rotating shaft, respectively. Two unfolding slots are formed on the side of each fixed plate that is close to each other. Two first support plates and two second support plates are slidably connected between the two unfolding slots on the same horizontal plane. A bidirectional screw is rotatably mounted on one side of each fixed plate, and a second gear is fixedly installed at one end of each bidirectional screw. The clamping assembly also includes connecting blocks fixedly mounted on one side of each of the first and second support plates. Two connecting blocks on the same side are connected to the bidirectional screw... The rotating assembly includes a motor fixedly mounted on one side of a support frame, with a lead screw fixedly mounted on the output shaft of the motor. The other end of the lead screw is rotatably connected to a side plate. The lead screw is threadedly connected to a sliding mounting block on one side. A one-way bearing is fixedly sleeved on the outer wall of the first rotating shaft. A first gear is fixedly sleeved on the outer wall of the one-way bearing. A first rack is fixedly mounted on one side of the side plate. The first rack meshes with the first gear. Two second racks are fixedly mounted on the bottom of the mounting plate. The two second racks mesh with the two second gears respectively.

2. The output device for printing according to claim 1, characterized in that, A third gear is fixedly installed on the outer wall of the second rotating shaft. A locking box is fixedly installed on the side of the side plate. A locking slider is slidably connected to the inner wall of the locking box. A plurality of locking teeth are provided on one side of the locking slider. The plurality of locking teeth cooperate with the third gear. Two locking springs are fixedly installed on the inner wall of one side of the locking box. The other end of each of the two locking springs is fixedly connected to one side of the locking slider.

3. An output device for printing according to claim 2, wherein A second fixing block is fixedly installed on both sides of the mounting plate. A clearance groove is opened on one side of the second fixing block. A fixing rod is fixedly installed on the inner wall of one side of the second fixing block. A gear groove and a first spring are sleeved on the outer wall of the fixing rod. One end of the first spring is fixedly connected to one side of the gear groove, and the other end of the first spring is fixedly connected to the inner wall of one side of the clearance groove.

4. An output device for printing according to claim 3, wherein The gear groove and the clearance groove are slidably connected. A pressing rod is slidably sleeved on the outer wall of the fixing rod. A rotating mounting block is rotatably connected to the outer wall of the pressing rod. A gear block is fixedly installed on one side of the rotating mounting block. One end of the pressing rod passes through the gear block and abuts against the gear groove. The gear block cooperates with the gear groove. A third rack is fixedly installed at the bottom of the rotating mounting block. The two third racks cooperate with two corresponding second gears respectively.

5. An output device for printing according to claim 4, wherein A limiting plate is fixedly installed on the outer wall of the pressing rod, and a second spring is sleeved on the outer wall of the pressing rod. One end of the second spring is fixedly connected to one side of the limiting plate, and the other end of the second spring is fixedly connected to one side of the gear block. The two third racks are located on the side of the mounting plate away from the first rack.

6. A method of using an output device for printing according to claim 5, wherein, Includes the following steps: S1. Paper Printing: The user can place the paper between the first support plate and the second support plate. Then, the user can control the electric push rod to lower the print head. When the print head is lowering, it drives the bidirectional screw to rotate. When the bidirectional screw rotates, it will open the two first support plates or two second support plates located above, so that the print head can print on the paper. After printing, the user can control the electric push rod again to raise the print head. At this time, the above operation will be reversed to close the first support plate or second support plate that has been opened. S2, Paper Flipping: Next, the user can control the motor to make the lead screw drive the sliding mounting block to move. At this time, the first and second rotating shafts will drive the central support plate and the paper to move together. When it moves to the position of the first rack, the first gear will mesh with the first rack to complete the flipping of the paper. S3. Paper Fixing: After the paper returns to its original position, the third gear on the second rotating shaft will press the locking slider to retract it into the locking box. Then, under the action of the locking spring, the locking teeth on one side of the locking slider will limit and fix the third gear. S4. Printing on the Other Side of the Paper: Following the above operation, the other side of the paper can be printed. After this printing is completed, the user can release the gear slot from the gear block by pressing the pressing rods on both sides before the print head rises. At this time, the two third racks can be rotated from above the mounting plate to below the mounting plate and mesh with the second gear located on that side. Then, the mounting plate can be controlled to rise again to complete the unfolding of the first or second support plate at the bottom.

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