Ink-jet printer

Abstract

The ink-jet printer comprises a printing device, an air suction device, a paper placing device, a paper pressing device and a paper feeding device, the paper pressing device and the paper feeding device are improved on the basis of an existing ink-jet printer, the original design of a paper pressing roller shaft and a paper feeding roller shaft is abandoned, a paper pressing roller assembly and a paper feeding roller are adopted, and once abrasion occurs, the paper pressing roller assembly can be replaced by the paper feeding roller assembly. Only the worn paper pressing roller and the worn paper feeding roller need to be replaced, the whole paper pressing roller shaft and the whole paper feeding roller shaft do not need to be replaced, the use cost of a user is greatly reduced, the air suction device and the paper pressing anti-warping assembly which are easy to mount and dismount are added, and even if the paper pressing roller assembly and the paper feeding roller are worn, the paper pressing roller assembly and the paper feeding roller are not damaged. The paper or the film to be printed can be firmly adsorbed under the negative pressure generated by the air suction device, and the two sides of the paper or the film are pressed by matching with the paper pressing anti-warping assembly, so that the adsorption effect is better, and the phenomena that the paper or the film slides, wrinkles and even is jammed in the advancing process due to abrasion of the paper pressing roller and the paper feeding roller are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to an inkjet printer. Background Art

[0002] When existing inkjet printers print patterns on paper or film, they mainly clamp the paper or film through the interaction between the platen roller and the feed roller, and rely on the rotation of the feed roller to drive the paper or film forward. However, during long-term high-speed operation, the platen roller and the feed roller will wear due to frequent contact and friction. Due to wear, the friction between the feed roller and the paper or film is reduced, which may cause the paper or film to slip during the forward movement, resulting in inaccurate printing position; and wear will also make the surface of the platen roller uneven, making it impossible to apply pressure evenly, which may cause the paper or film to wrinkle or even jam, affecting the printing effect; and once a part of the platen roller and the feed roller is worn, the entire roller needs to be replaced, which not only increases the user's cost of use but also causes a waste of resources. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides an inkjet printer, comprising a base, and a printing device, an air suction device, a paper placing device, a paper pressing device and a paper feeding device arranged on the base; the printing device comprises a moving component, an inkjet component and an ink supply component; the moving component is arranged in the center of the base, the inkjet component is arranged on the moving component, and the ink supply component and the inkjet component are connected through a flexible pipeline; the air suction device is located below the printing device along the PC axis, and comprises an air suction component and an adjustment component, and the adjustment component is arranged on both sides of the air suction component; the paper placing device is located on the left side of the air suction device along the PB axis; the paper pressing device is arranged below the inkjet component along the PC axis, and comprises a paper pressing wheel component and a paper pressing anti-warping component, the paper pressing wheel component is arranged on the adjustment component, and the paper pressing anti-warping component is arranged on the air suction component; the paper feeding device is arranged below the paper pressing device along the PC axis, and is rotatably connected to the adjustment component.

[0004] Preferably, the moving assembly includes a crossbeam, a fixed seat, a synchronous wheel, a synchronous belt, a first driving member, a linear guide and a sliding seat. The crossbeam is arranged on the base along the PB direction, and its two ends are respectively connected to the fixed seat. Synchronous wheels are provided on the fixed seats at both ends of the crossbeam, and the two ends of the synchronous belt are respectively mounted on the synchronous wheels. The first driving member drives one of the synchronous wheels to rotate through a coupling; the linear guide is fixed on the crossbeam along the PB direction, and the linear guide is arranged below the synchronous belt along the PC direction; the sliding seat is arranged on the linear guide and is slidably connected to the linear guide, and the sliding seat is also connected to the synchronous belt.

[0005] Preferably, the inkjet assembly includes a control component and a nozzle carriage, both of which are arranged on a sliding seat, the control component is electrically connected to the first driving component and the nozzle carriage respectively, and the nozzle carriage is provided with a diverter, an ink bag and an inkjet nozzle, the ink outlet end of the ink bag is connected to the inkjet nozzle through the diverter, and the ink inlet end of the ink bag is connected to the ink supply assembly through a flexible pipeline.

[0006] Preferably, the ink supply assembly includes an ink cartridge, a peristaltic pump and a filter. The ink cartridge is fixed on the base. The ink outlet of the ink cartridge is connected to the ink inlet of the ink bag through a flexible pipeline. A filter is provided on the flexible pipeline, and the flexible pipeline is provided in the pump head of the peristaltic pump.

[0007] Preferably, the suction assembly includes a suction fan, an installation box and a suction platform. The suction fan is arranged at the bottom of the installation box, and the suction platform is arranged on the installation box. The suction platform and the installation box cooperate to form a suction cavity, and the suction platform is also provided with suction holes.

[0008] Preferably, the adjustment component includes at least two vertical plates and at least four L-shaped connecting plates. The two vertical plates are respectively arranged on both sides of the suction component. The bottom of the vertical plates are fixed to the base through L-shaped connecting plates, and the side of the vertical plates close to the suction component is connected to the suction platform through L-shaped connecting plates.

[0009] Preferably, the paper placing device includes a column, a paper reel and a paper drum; both ends of the paper reel are fixed on the column respectively, the paper drum is sleeved on the paper reel, and an elastic member is provided between the paper drum and the paper reel.

[0010] Preferably, the paper pressing wheel assembly includes a paper pressing rod, a mounting bracket and a paper pressing roller. The paper pressing rod passes through the two vertical plates and can rotate relative to the vertical plates. A rotating handle is fixed to one end of the paper pressing rod. A protrusion is fixed on the paper pressing rod. The protrusion is arranged in the mounting bracket. The top of the mounting bracket is fixed on the cross beam. The bottom of the mounting bracket is rotatably connected to the connecting arm through a connecting piece. The protrusion abuts against one end of the connecting arm. The connecting arm is provided with a paper pressing roller at the end away from the protrusion.

[0011] Preferably, the paper pressing and anti-warping assembly includes a paper pressing board and an anti-warping part. The anti-warping part is clamped on the suction platform and can move back and forth on the suction platform along the PB axis. The paper pressing board is arranged above the anti-warping part and is magnetically or detachably connected to the anti-warping part.

[0012] Preferably, the paper feeding device includes a rotating shaft, a transmission wheel, a second driving member, a transmission belt and a paper feeding roller. The rotating shaft passes through the two vertical plates and can rotate relative to the vertical plates. A transmission wheel is provided at one end of the rotating shaft, and a transmission belt is provided on the transmission wheel. The transmission belt is connected to the driving end of the second driving member. A paper feeding roller is provided on the rotating shaft, and the paper feeding roller is fixed to the rotating shaft by a fastener.

[0013] The beneficial effect is that: based on the existing inkjet printer, the present application not only makes great improvements to the paper pressing device and the paper feeding device, but also abandons the original paper pressing roller and paper feeding roller design and replaces it with a paper pressing wheel assembly and paper feeding roller design. Once wear occurs, only the worn paper pressing roller and paper feeding roller need to be replaced, without replacing the entire paper pressing roller and paper feeding roller, which greatly reduces the user's usage cost and avoids waste of resources. In addition, an air suction device and a paper pressing anti-warping assembly that are easy to install and disassemble are added. Even if the paper pressing wheel assembly and paper feeding roller are worn, the paper or film to be printed can be firmly adsorbed under the negative pressure generated by the air suction device, and the paper pressing anti-warping assembly is used to press both sides of the paper or film to make the adsorption effect better, thereby solving the problem of paper or film sliding, wrinkling or even paper jams during the forward process caused by wear of the paper pressing roller and paper feeding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is the main view of the utility model;

[0016] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the position structure of the mobile component and inkjet component of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the inkjet assembly of the utility model;

[0019] Figure 5 This is a schematic diagram of the ink supply assembly structure of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the paper placing device of the present utility model;

[0021] Figure 7 This is a schematic diagram of the exploded structure of the paper pressing device and paper feeding device of the utility model;

[0022] drawing:

[0023] 1. Base;

[0024] 2. Printing device;

[0025] 21. Moving assembly; 211. Crossbeam; 212. Fixed seat; 213. Synchronous wheel; 214. Synchronous belt; 215. First driving member; 216. Linear guide rail; 217. Sliding seat;

[0026] 22. Inkjet assembly; 221. Control unit; 222. Printhead carriage; 2221. Diverter; 2222. Ink sac; 2223. Inkjet nozzle;

[0027] 23. Ink supply assembly; 231. Ink cartridge; 232. Peristaltic pump; 233. Filter;

[0028] 3. Air suction device;

[0029] 31. Suction assembly; 311. Suction fan; 312. Installation box; 313. Suction platform; 3131. Suction hole;

[0030] 32. Adjustment assembly; 321. Vertical plate; 322. L-shaped connecting plate;

[0031] 4. Paper placing device; 41. Column; 42. Paper reel;

[0032] 5. Paper pressing device;

[0033] 51, paper pressing roller assembly; 511, paper pressing rod; 5111, rotating handle; 5112, bump; 512, mounting bracket; 5121, connecting piece; 513, connecting arm; 514, paper pressing roller;

[0034] 52. Paper pressing and anti-warping component; 521. Paper pressing board; 522. Anti-warping part;

[0035] 6. Paper feed device; 61. Rotating shaft; 62. Transmission wheel; 63. Second driving member; 631. Driving end; 64. Transmission belt; 65. Paper feed roller; 651. Bushing;

[0036] 7. Ink stack assembly; 71. Controller; 72. Sensor;

[0037] 8. Housing; 81. Emergency stop switch. DETAILED DESCRIPTION

[0038] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0039] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Example

[0042] See also Figure 1 , Figure 1 This is the front view of the present invention. This embodiment provides an inkjet printer, comprising a base 1 and a housing 8. The housing 8 and the base 1 cooperate to form a receiving chamber, within which are disposed a printing device 2, an air suction device 3, a paper placing device 4, a paper pressing device 5, a paper feeding device 6, and an ink stack assembly 7. The printing device 2, the air suction device 3, the paper placing device 4, the paper pressing device 5, the paper feeding device 6, and the ink stack assembly 7 are all disposed on the base 1. The outer surface of the housing 8 is provided with an emergency stop switch 81, a display screen, and a control panel.

[0043] Refer back Figure 1 Combined together Figure 2 , Figure 2 The printing device 2 includes a moving assembly 21, an inkjet assembly 22, and an ink supply assembly 23. The moving assembly 21 is located in the center of the base 1, the inkjet assembly 22 is located on the moving assembly 21, and the ink supply assembly 23 and the inkjet assembly 22 are connected by a flexible pipe.

[0044] Refer back Figure 2 Combined together Figure 3 , Figure 3The figure is a schematic diagram of the structure of the movable assembly and inkjet assembly of the present invention. The movable assembly 21 includes a crossbeam 211, a fixed seat 212, a synchronous wheel 213, a synchronous belt 214, a first driving member 215, a linear guide 216, and a sliding seat 217. The crossbeam 211 is arranged on the base 1 along the PB direction, and its two ends are respectively connected to the fixed seat 212. The fixed seats 212 at both ends of the crossbeam 211 are each provided with a synchronous wheel 213. The two ends of the synchronous belt 214 are respectively mounted on the synchronous wheels 213. The first driving member 215 drives one of the synchronous wheels 213 to rotate through a coupling. The first driving member 215 is a stepping motor in this application. The linear guide 216 is fixed to the crossbeam 211 along the PB direction by screws and other fasteners, and is arranged below the synchronous belt 214 along the PC direction. The sliding seat 217 is arranged on the linear guide 216 and is slidably connected to the linear guide 216. The sliding seat 217 is also connected to the synchronous belt 214. The first driving member 215 drives the synchronous wheel 213 to rotate, thereby rotating the synchronous belt 214 . The synchronous belt 214 drives the sliding seat 217 to reciprocate along the linear guide rail 216 .

[0045] See also Figure 4 , Figure 4 This is a schematic diagram of the inkjet assembly structure of the present invention. The inkjet assembly 22 includes a control component 221 and a nozzle carriage 222, both mounted on a sliding seat 217. The control component 221 is electrically connected to the first drive component 215 and the nozzle carriage 222, respectively. The control component 221 controls the sliding speed of the nozzle carriage 222 by adjusting the output power of the first drive component 215. The nozzle carriage 222 is equipped with a flow divider 2221, an ink sac 2222, and an inkjet nozzle 2223. The ink outlet of the ink sac 2222 is connected to the inkjet nozzle 2223 via the flow divider 2221, while the ink inlet of the ink sac 2222 is connected to the ink supply assembly 23 via a flexible pipeline. The ink bag 2222 stores the ink required for printing. The diverter 2221 diverts the ink in the ink bag 2222 to a plurality of inkjet nozzles 2223 . The inkjet nozzles 2223 print preset images and texts on paper or film.

[0046] See also Figure 5 , Figure 5This is a schematic diagram of the structure of the ink supply assembly of the utility model. The ink supply assembly 23 includes an ink cartridge 231, a peristaltic pump 232 and a filter 233. The ink cartridge 231 is fixed to the base 1. The ink outlet end of the ink cartridge 231 is connected to the ink inlet end of the ink sac 2222 through a flexible pipeline. A filter 233 is provided on the flexible pipeline, and the flexible pipeline is arranged in the pump head of the peristaltic pump 232. The filter 233 is used to filter out particulate impurities and bubbles in the ink to prevent impurities from clogging the inkjet nozzle 2223. The peristaltic pump 232 squeezes the flexible pipeline to promote the flow of ink. The method of using the peristaltic pump 232 to squeeze the flexible pipeline to promote the flow of ink does not directly contact the ink, reduces the risk of contamination, and can accurately control the flow rate as needed.

[0047] Refer back Figure 2 The suction device 3 is located below the printing device 2 along the PC axis and includes a suction assembly 31 and an adjustment assembly 32. The adjustment assembly 32 is located on both sides of the suction assembly 31. The suction assembly 31 includes a suction fan 311, an installation box 312, and a suction platform 313. The suction fan 311 is located at the bottom of the installation box 312, and the suction platform 313 is located on the installation box 312. The suction platform 313 and the installation box 312 cooperate to form a suction chamber. The suction platform 313 is also provided with a suction hole 3131. When the suction fan 311 is started, it begins to extract air from the interior of the suction chamber, thereby generating a negative pressure in the suction chamber. Figure 2 , and then combine Figure 7 , Figure 7 The diagram is a schematic diagram of the exploded structure of the paper pressing device and paper feeding device of the present invention. The adjustment component 32 includes at least two vertical plates 321 and at least four L-shaped connecting plates 322. The two vertical plates 321 are respectively arranged on both sides of the suction component 31. A plug-in is provided at the bottom of the vertical plate 321, and a socket is provided on the surface of the base 1. The vertical plate 321 stands on the base 1 through the plug-in and the socket. Then the bottom of the vertical plate 321 is further fixed to the base 1 through the L-shaped connecting plate 322. The double fixing design can greatly enhance the stability of the entire structure. During the design, multiple socket positions can be preset on the base 1, so that the user can adjust the position of the vertical plate 321 according to actual needs, making the layout more flexible. The vertical plate 321 is detachably connected to the suction platform 313 on one side close to the suction component 31 through the L-shaped connecting plate 322, so that the height of the suction platform 313 can be flexibly adjusted according to actual needs. Compared with the existing inkjet printer design that uses machined parts to integrate the adjustment component 32 with the base 1, the improvement in this application not only enables the rapid installation and disassembly of the adjustment component 32, but also has a stable structure and can be flexibly adjusted according to the actual needs of the user. Maintenance only requires point-to-point maintenance and does not require large-scale replacement.

[0048] See also Figure 6 , Figure 6This is a schematic diagram of the structure of the paper placing device of the present invention. The paper placing device 4 is located on the left side of the suction device 3 along the PB axis; the paper placing device 4 includes a column 41, a paper reel 42 and a paper drum; the two ends of the paper reel 42 are respectively fixed on the column 41, the paper drum is sleeved on the paper reel 42, and an elastic member is provided between the paper drum and the paper reel 42. The elastic member is a spring in this application. When the paper drum rotates with the paper reel 42, it drives the paper or film to move smoothly and enter the subsequent printing process. As the paper on the paper drum gradually decreases, the spring can automatically adjust the tension through its elastic force, so that the paper can maintain appropriate tension throughout the printing process, and will not become loose or too tight due to changes in the amount of paper. It can effectively prevent paper wrinkles or offsets and reduce paper jams.

[0049] Refer back Figure 3 and Figure 7 The paper pressing device 5 is arranged below the inkjet assembly 22 along the PC axis, and includes a paper pressing wheel assembly 51 and a paper pressing anti-warping assembly 52. ​​The paper pressing wheel assembly 51 is arranged on the adjustment assembly 32, and the paper pressing anti-warping assembly 52 is arranged on the suction assembly 31; the paper pressing wheel assembly 51 includes a paper pressing rod 511, a mounting bracket 512 and a paper pressing roller 514. The paper pressing rod 511 passes through the two vertical plates 321 and can rotate relative to the vertical plates 321. One end of the paper pressing rod 511 is fixed with Turning the handle 5111 causes a protrusion 5112 to be fixed to the paper pressing rod 511. The protrusion 5112 is located within the mounting bracket 512. The top of the mounting bracket 512 is fixed to the crossbeam 211. The bottom of the mounting bracket 512 is rotatably connected to the connecting arm 513 via a connecting member 5121. The connecting member 5121 is a shaft pin. The protrusion 5112 abuts against one end of the connecting arm 513. The end of the connecting arm 513 away from the protrusion 5112 is provided with a paper pressing roller 514. Turning the handle 5111 causes the paper pressing rod 511 to rotate, thereby driving the protrusion 5112 on the paper pressing rod 511 to rotate. Using the principle of leverage, when the protrusion 5112 rotates upward, the end of the connecting arm 513 away from the protrusion 5112 descends, thereby changing the tilting angle of the paper pressing roller 514. This in turn adjusts the interaction force between the paper pressing roller 514 and the paper feed roller 65, allowing the printer to adapt to paper or film of different thicknesses and providing printer versatility. Compared with the existing inkjet printers that use a pressure roller, the present application uses a pressure roller assembly. Once wear occurs, only the worn pressure roller needs to be replaced, without replacing the entire pressure roller. The pressure paper anti-warping assembly 52 includes a pressure paper board 521 and an anti-warping member 522. The anti-warping member 522 is mounted on the suction platform 313 and can move back and forth on the suction platform 313 along the PB axis. The pressure paper board 521 is located above the anti-warping member 522 and is magnetically or detachably connected to the anti-warping member 522. The cooperation between the pressure paper board 521 and the anti-warping member 522 ensures that the paper or film to be printed remains flat during the transmission and printing process, preventing the paper or film from warping.

[0050] Refer back Figure 7 , the paper feeding device 6 is arranged below the paper pressing device 5 along the PC axis and is rotatably connected to the adjustment component 32; the paper feeding device 6 includes a rotating shaft 61, a transmission wheel 62, a second driving member 63, a transmission belt 64 and a paper feeding roller 65. The rotating shaft 61 passes through the two vertical plates 321 and can rotate relative to the vertical plates 321. A transmission wheel 62 is provided at one end of the rotating shaft 61, and a transmission belt 64 is provided on the transmission wheel 62. The transmission belt 64 is connected to the driving end 631 of the second driving member 63. The second driving member 63 is a driving motor selected in this application. The rotating shaft 61 is provided with a transmission belt The paper feed roller 65 is fixed to the rotating shaft 61 by fasteners such as bolts. The paper feed roller 65 is provided with a rough-surfaced sleeve 651 to increase friction. In this application, the sleeve 651 can be a rubber sleeve or a silicone sleeve. When the paper or film to be printed is fed between the paper feed roller 65 and the pressure roller 514, the pressure roller 514 and the paper feed roller 65 squeeze each other to sandwich the paper or film to be printed. As the paper feed roller 65 rotates, the paper or film to be printed is driven forward. Compared with the paper feed roller used in existing inkjet printers, the present application uses a paper feed roller. Once wear occurs, only the worn sleeve 651 needs to be replaced, without replacing the entire paper feed roller, which greatly reduces the user's cost of use.

[0051] Refer back Figure 7 An ink stack assembly 7 is also provided on the side of the vertical plate 321 away from the suction component 31. The ink stack assembly 7 includes a controller 71 and a sensor 72; the controller 71 is electrically connected to the sensor 72, the emergency stop switch 81, the display screen, the control panel, and the peristaltic pump 232. The sensor 72 includes at least one of a temperature sensor, a humidity sensor, and a liquid level sensor. The ink stack assembly 7 is used to monitor parameters such as ink volume, temperature, and humidity, and feed back the information to the controller 71 to timely adjust the working status of the inkjet printer.

[0052] During operation, when the paper roller rotates with the paper winding shaft 42, the paper or film to be printed is driven to move smoothly. When the paper or film to be printed is fed between the paper feed roller 65 and the paper pressing roller 514, the paper pressing roller 514 and the paper feed roller 65 squeeze each other to clamp the paper or film to be printed in the middle. As the paper feed roller 65 rotates, the paper or film to be printed is driven to move forward to the suction platform 313 and is firmly adsorbed by the negative pressure generated by the suction chamber. At this time, both sides of the paper or film to be printed are also clamped by the paper pressing anti-warping component 52, so that the printed paper or film remains flat during the transmission and printing process. At the same time, the control component 221 controls the nozzle carriage 222 to reciprocate along the linear guide rail 216 by adjusting the output power of the first driving component 215, and the inkjet nozzle 2223 on the nozzle carriage 222 prints preset images and texts on the paper or film.

[0053] In summary, based on the existing inkjet printer, the present application not only makes great improvements to the paper pressing device 4 and the paper feeding device 6, but also abandons the original paper pressing roller and paper feeding roller design and replaces it with a paper pressing wheel assembly 51 and paper feeding roller 65 design. Once wear occurs, only the worn paper pressing roller and paper feeding roller need to be replaced, without replacing the entire paper pressing roller and paper feeding roller, which greatly reduces the user's usage cost. In addition, an air suction device 3 and a paper pressing anti-warping assembly 52 that are easy to install and disassemble are added. Even if the paper pressing wheel assembly 51 and the paper feeding roller 65 are worn, the paper or film to be printed can be firmly adsorbed under the negative pressure generated by the air suction device 3, and the paper pressing anti-warping assembly 52 presses both sides of the paper or film to make the adsorption effect better, thereby solving the problem of paper or film sliding, wrinkling or even paper jams during the forward process caused by wear of the paper pressing roller 514 and the paper feeding roller 65.

[0054] The above is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. An inkjet printer, characterized in that: The invention comprises a base (1), and a printing device (2), an air suction device (3), a paper placing device (4), a paper pressing device (5) and a paper feeding device (6) arranged on the base (1); the printing device (2) comprises a moving component (21), an inkjet component (22) and an ink supply component (23); the moving component (21) is arranged at the center of the base (1), the inkjet component (22) is arranged on the moving component (21), and the ink supply component (23) is connected to the inkjet component (22) through a flexible pipe; the air suction device (3) is located below the printing device (2) along the PC axis, and comprises an air suction component ( The invention relates to a paper feeding device (6) comprising a paper pressing device (5) and an adjusting component (31), wherein the adjusting component (32) is arranged on both sides of the air suction component (31); the paper placing device (4) is located on the left side of the air suction device (3) along the PB axis; the paper pressing device (5) is arranged below the inkjet component (22) along the PC axis, and comprises a paper pressing wheel component (51) and a paper pressing anti-warping component (52), wherein the paper pressing wheel component (51) is arranged on the adjusting component (32), and the paper pressing anti-warping component (52) is arranged on the air suction component (31); the paper feeding device (6) is arranged below the paper pressing device (5) along the PC axis, and is rotatably connected to the adjusting component (32).

2. The inkjet printer according to claim 1, wherein The moving assembly (21) comprises a crossbeam (211), a fixed seat (212), a synchronous wheel (213), a synchronous belt (214), a first driving member (215), a linear guide rail (216) and a sliding seat (217). The crossbeam (211) is arranged on the base (1) along the PB direction, and its two ends are respectively connected to the fixed seat (212). The fixed seats (212) at both ends of the crossbeam (211) are provided with synchronous wheels (213). The two ends of the synchronous belt (214) are respectively sleeved on the On the synchronous wheel (213), the first driving member (215) drives one of the synchronous wheels (213) to rotate through a coupling; the linear guide rail (216) is fixed on the beam (211) along the PB direction, and the linear guide rail (216) is arranged below the synchronous belt (214) along the PC direction; the sliding seat (217) is arranged on the linear guide rail (216) and is slidably connected to the linear guide rail (216), and the sliding seat (217) is also connected to the synchronous belt (214).

3. The inkjet printer according to claim 2, wherein: The inkjet assembly (22) comprises a control member (221) and a nozzle carriage (222). Both the control member (221) and the nozzle carriage (222) are arranged on the sliding seat (217). The control member (221) is electrically connected to the first driving member (215) and the nozzle carriage (222) respectively. The nozzle carriage (222) is provided with a diverter (2221), an ink bag (2222) and an inkjet nozzle (2223). The ink outlet end of the ink bag (2222) is connected to the inkjet nozzle (2223) through the diverter (2221), and the ink inlet end of the ink bag (2222) is connected to the ink supply assembly (23) through the flexible pipeline.

4. The inkjet printer according to claim 3, wherein: The ink supply assembly (23) comprises an ink cartridge (231), a peristaltic pump (232) and a filter (233); the ink cartridge (231) is fixed on the base (1); the ink outlet of the ink cartridge (231) is connected to the ink inlet of the ink bag (2222) via the flexible pipeline; the filter (233) is provided on the flexible pipeline; and the flexible pipeline is provided in the pump head of the peristaltic pump (232).

5. The inkjet printer according to claim 2, wherein: The suction assembly (31) comprises a suction fan (311), an installation box (312) and a suction platform (313); the suction fan (311) is arranged at the bottom of the installation box (312); the suction platform (313) is arranged on the installation box (312); the suction platform (313) cooperates with the installation box (312) to form a suction cavity; the suction platform (313) is also provided with a suction hole (3131).

6. The inkjet printer according to claim 5, wherein: The adjustment component (32) comprises at least two vertical plates (321) and at least four L-shaped connecting plates (322), the two vertical plates (321) being respectively arranged on both sides of the air suction component (31), the bottoms of the vertical plates (321) being respectively fixed to the base (1) via L-shaped connecting plates (322), and the sides of the vertical plates (321) close to the air suction component (31) being respectively connected to the air suction platform (313) via L-shaped connecting plates (322).

7. The inkjet printer according to claim 1, wherein The paper placing device (4) comprises a column (41), a paper reel (42) and a paper drum; both ends of the paper reel (42) are respectively fixed on the column (41); the paper drum is sleeved on the paper reel (42); and an elastic member is provided between the paper drum and the paper reel (42).

8. The inkjet printer according to claim 6, wherein: The paper pressing wheel assembly (51) comprises a paper pressing rod (511), a mounting bracket (512) and a paper pressing roller (514); the paper pressing rod (511) passes through the two vertical plates (321) and can rotate relative to the vertical plates (321); a rotating handle (5111) is fixed to one end of the paper pressing rod (511); a protrusion (5112) is fixed to the paper pressing rod (511); the protrusion (5112) is arranged in the mounting bracket (512); the top of the mounting bracket (512) is fixed to the crossbeam (211); the bottom of the mounting bracket (512) is rotatably connected to the connecting arm (513) through a connecting piece (5121); the protrusion (5112) abuts against one end of the connecting arm (513); and the paper pressing roller (514) is provided at the end of the connecting arm (513) away from the protrusion (5112).

9. The inkjet printer according to claim 5, wherein: The paper pressing and anti-warping assembly (52) comprises a paper pressing board (521) and an anti-warping member (522), wherein the anti-warping member (522) is mounted on the air suction platform (313) and can move back and forth on the air suction platform (313) along the PB axis, and the paper pressing board (521) is arranged above the anti-warping member (522) and is magnetically or detachably connected to the anti-warping member (522).

10. The inkjet printer according to claim 6, wherein The paper feeding device (6) comprises a rotating shaft (61), a transmission wheel (62), a second driving member (63), a transmission belt (64) and a paper feeding roller (65); the rotating shaft (61) passes through the two vertical plates (321) and can rotate relative to the vertical plates (321); a transmission wheel (62) is provided at one end of the rotating shaft (61); a transmission belt (64) is sleeved on the transmission wheel (62); the transmission belt (64) is connected to the driving end (631) of the second driving member (63); the paper feeding roller (65) is sleeved on the rotating shaft (61); and the paper feeding roller (65) is fixed to the rotating shaft (61) by a fastener.

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