Ink-jet printer with adjustable ink-jet distance and method
By designing an ink adsorption component and a reflux mechanism in the inkjet printer, the problem of ink leakage and spillage caused by rapid nozzle movement was solved, achieving efficient ink utilization and improved printing quality.
Patent Information
- Application Number
- CN202511525723.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-01-02
AI Technical Summary
In inkjet printers, when the nozzles move rapidly, mechanical vibration and inertia cause the nozzles to leak or spill, affecting print quality.
An inkjet printer with adjustable inkjet distance was designed, which includes an ink adsorption component, a reflux mechanism and a tapping unit. Residual ink is drawn out by a negative pressure machine and reused by the reflux mechanism, avoiding ink leakage and spillage caused by rapid nozzle movement.
It improves ink utilization, avoids a decline in inkjet printing quality, and significantly enhances printing results.
Smart Images
Figure CN121246418A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of inkjet printing technology, and particularly relates to an inkjet printing machine with adjustable inkjet distance and a method. BACKGROUND
[0002] At present, in the inkjet printing machine, the paper is put into the inside of the inkjet printing machine, at this time, the stored ink is sprayed onto the paper through the nozzle, so as to realize inkjet printing, but in the printing process, due to the different thickness of the paper, the too thick or too thin thickness will affect the printing quality, therefore, in order to meet the needs of different thickness of the paper, the nozzle with adjustable inkjet distance is usually arranged in the inside of the inkjet printing machine.
[0003] In the foregoing prior art, when the inkjet distance is adjusted, the nozzle module needs to be quickly moved to reduce the adjustment time and ensure the efficiency of inkjet, but when the nozzle moves quickly or stops suddenly, mechanical vibration and inertia will be generated, which causes the ink remaining in the nozzle to seep out or fall on the paper, finally affecting the printing quality of inkjet. SUMMARY
[0004] The present application aims to provide an inkjet printing machine with adjustable inkjet distance and a method, which solves the problem that in the prior art, when the inkjet distance is adjusted, the nozzle module needs to be quickly moved to reduce the adjustment time and ensure the efficiency of inkjet, but when the nozzle moves quickly or stops suddenly, mechanical vibration and inertia will be generated, which causes the ink remaining in the nozzle to seep out or fall on the paper, finally affecting the printing quality of inkjet.
[0005] To achieve the above-mentioned purpose, the present application provides an inkjet printing machine with adjustable inkjet distance, which comprises a base, a shell, a plurality of nozzles and an ink adsorption assembly, the shell is arranged above the base, and the plurality of nozzles are sequentially arranged in the inside of the shell. The ink adsorption assembly comprises an adsorption bin, a plurality of negative pressure machines, a plurality of sealing butt joints, a backflow mechanism and a plurality of knocking units, the adsorption bin is arranged in the inside of the shell and below the plurality of nozzles, the plurality of negative pressure machines are arranged on the adsorption bin, the plurality of sealing butt joints are sequentially arranged above the adsorption bin, the sealing butt joints are matched with the nozzles, the backflow mechanism is arranged on the adsorption bin, and the plurality of knocking units are respectively arranged outside the corresponding nozzles.
[0006] The inkjet printing machine with adjustable inkjet distance further comprises a feeding lifting part, a feeding conveying wheel, a discharging lifting part and a discharging conveying wheel, the feeding lifting part and the discharging lifting part are arranged in the inside of the shell, the feeding conveying wheel is arranged at the output end of the feeding lifting part, and the discharging conveying wheel is arranged at the output end of the discharging lifting part.
[0007] The ink adsorption assembly further comprises a plurality of pressure sensors, an ink bin, a feeding port and a plurality of ink processing units, the plurality of pressure sensors are sequentially arranged on the corresponding sealing butt joint ring, the ink bin is arranged on the inner top wall of the shell, the feeding port is in communication with the ink bin, and the plurality of nozzles are in communication with the ink bin through the plurality of ink processing units.
[0008] The ink adsorption assembly further comprises a distance adjusting plate and two adjusting units, the two adjusting units are symmetrically arranged on the inner side wall of the shell, the distance adjusting plate is arranged on the two adjusting units, and the plurality of nozzles are fixedly connected to one side of the distance adjusting plate.
[0009] The ink adsorption assembly further comprises a distance adjusting plate and two adjusting units, the two adjusting units are symmetrically arranged on the inner side wall of the shell, the distance adjusting plate is arranged on the two adjusting units, and the plurality of nozzles are fixedly connected to one side of the distance adjusting plate.
[0010] The knocking unit comprises a supporting ring, a plurality of knocking components and a plurality of knocking blocks, the supporting ring is sleeved outside the nozzle, the supporting ring is fixedly connected with the distance adjusting plate, the plurality of knocking components are sequentially arranged on the supporting ring, and output ends of the plurality of knocking components are fixedly connected with the corresponding knocking blocks.
[0011] The ink processing unit comprises an ink pump, a conveying pipe, a filter, a degassing device, a pressure regulating valve, a buffer cavity and an adjusting telescopic pipe, the ink pump is arranged on the inner side wall of the ink bin, two ends of the conveying pipe are in communication with the ink pump and one end of the adjusting telescopic pipe respectively, the other end of the adjusting telescopic pipe is in communication with the nozzle, and the filter, the degassing device, the pressure regulating valve and the buffer cavity are sequentially arranged on the conveying pipe.
[0012] The adjusting unit comprises a driving component, a threaded rod and a threaded block, the driving component is arranged in the interior of the shell, an output end of the driving component is fixedly connected with the threaded rod, the threaded rod is rotationally connected with the base, the threaded block is matched with the threaded rod, and the threaded block is arranged on one end of the distance adjusting plate.
[0013] The ink adsorption assembly further comprises an adsorption adjusting unit, and the adsorption adjusting unit is arranged in the interior of the shell. The adsorption adjusting unit comprises a plurality of adsorption lifting components, a lifting frame, and a plurality of adsorption horizontal moving components, the plurality of adsorption lifting components are sequentially arranged at the inner top of the shell, the output ends of the plurality of adsorption lifting components are fixedly connected with the lifting frame, the plurality of adsorption horizontal moving components are sequentially arranged at one side of the lifting frame, the output ends of the plurality of adsorption horizontal moving components penetrate through the lifting frame and are fixedly connected with the adsorption bin.
[0014] The application also provides a method for ink jet printing with adjustable ink jet distance, which uses the ink jet printing machine with adjustable ink jet distance, and comprises the following steps: The paper is placed in the shell for conveying; After the paper reaches below the nozzle, the nozzle is started to spray ink for printing; After the printing is completed, the paper is output from the shell; When the paper with different thicknesses is switched, the adsorption bin is moved below the nozzle; The sealing butt joint ring is sealed against the nozzle, and then the negative pressure machine is started to suck out the residual ink in the nozzle; The knocking unit knocks the outside of the nozzle to improve the ink discharge efficiency; After the ink is sucked out and located in the adsorption bin, the backflow mechanism is started to backflow and reuse the sucked ink; The adsorption bin is moved away, and the nozzle is adjusted in lifting to move to the optimal ink jet distance.
[0015] The ink jet printing machine and method with adjustable ink jet distance of the application place the paper in the shell for conveying, start the nozzle to spray ink for printing after the paper reaches below the nozzle, output the paper from the shell after the printing is completed, move the adsorption bin below the nozzle when the paper with different thicknesses is switched, seal the sealing butt joint ring against the nozzle, start the negative pressure machine to suck out the residual ink in the nozzle, knock the outside of the nozzle by the knocking unit to improve the ink discharge efficiency, start the backflow mechanism to backflow and reuse the sucked ink after the ink is sucked out and located in the adsorption bin, move away the adsorption bin, and adjust the nozzle in lifting to move to the optimal ink jet distance, thereby sucking out and backflowing the residual ink in the nozzle before adjusting the distance of the nozzle, for subsequent ink jet use, which not only improves the ink utilization rate, but also avoids ink leakage and scattering caused by rapid movement of the nozzle, and significantly improves the ink jet printing quality. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below.
[0017] Figure 1 is a structural schematic diagram of the inkjet distance adjustable inkjet printer of the present application.
[0018] Figure 2 is a sectional view of the inkjet distance adjustable inkjet printer of the present application.
[0019] Figure 3 is a structural schematic diagram of the inkjet distance adjustable inkjet printer of the present application. Figure 2 is an A-A line sectional view of the inkjet distance adjustable inkjet printer of the present application.
[0020] Figure 4 is a structural schematic diagram of the inkjet distance adjustable inkjet printer of the present application. Figure 2 is an enlarged view of the partial structure at B of the inkjet distance adjustable inkjet printer of the present application.
[0021] Figure 5 is an internal structural diagram of the inkjet distance adjustable inkjet printer of the present application.
[0022] Figure 6 is a structural schematic diagram of the nozzle of the present application.
[0023] Figure 7 is a step flow chart of the inkjet distance adjustable inkjet method of the present application.
[0024] 1-base, 2-housing, 3-nozzle, 4-absorption warehouse, 5-negative pressure machine, 6-sealing butt joint ring, 7-feeding lifting component, 8-feeding conveying wheel, 9-discharging lifting component, 10-discharging conveying wheel, 11-pressure sensor, 12-ink warehouse, 13-feeding port, 14-distance adjusting plate, 15-first inclined plate, 16-second inclined plate, 17-backflow expansion pipe, 18-backflow pump, 19-support ring, 20-knocking component, 21-knocking block, 22-ink pump, 23-conveying pipe, 24-filter, 25-deaeration device, 26-pressure regulating valve, 27-buffer cavity, 28-adjusting expansion pipe, 29-driving component, 30-threaded rod, 31-threaded block, 32-absorption lifting component, 33-lifting frame, 34-absorption transverse moving component. DETAILED DESCRIPTION
[0025] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, the embodiments described below by referring to the accompanying drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0026] The present application provides an inkjet distance adjustable inkjet printer, comprising a base 1, a housing 2, a plurality of nozzles 3 and an ink absorption assembly, the housing 2 is arranged above the base 1, and a plurality of the nozzles 3 are sequentially arranged inside the housing 2. The ink adsorption assembly comprises an adsorption bin 4, a plurality of negative pressure machines 5, a plurality of sealing butt joints 6, a backflow mechanism and a plurality of knocking units, the adsorption bin 4 is arranged in the inside of the shell 2 and below the plurality of nozzles 3, the plurality of negative pressure machines 5 are arranged on the adsorption bin 4, the plurality of sealing butt joints 6 are sequentially arranged above the adsorption bin 4, the sealing butt joints 6 are matched with the nozzles 3, the backflow mechanism is arranged on the adsorption bin 4, and the plurality of knocking units are respectively arranged outside the corresponding nozzles 3.
[0027] In the embodiment, referring to Figures 1 to 6 , the paper is placed in the inside of the shell 2 for conveying, the paper is started after reaching below the nozzles 3, ink is sprayed for printing, the paper is output from the shell 2 after printing is finished, the adsorption bin 4 is moved to below the nozzles 3 when paper of different thicknesses is switched, the sealing butt joints 6 are sealed against the nozzles 3 below, the negative pressure machines 5 are started again, and the residual ink in the nozzles 3 is adsorbed, the knocking units knock outside the nozzles 3, the ink discharge efficiency is improved, the ink adsorbed in the adsorption bin 4 is started to flow back for reuse, the adsorption bin 4 is moved away, the nozzles 3 are adjusted in lifting, and the nozzles 3 are moved to the best ink jet distance, so that the residual ink in the inside is adsorbed and flows back for storage before the nozzles 3 are adjusted in distance, the ink is used subsequently, the ink utilization rate is improved, ink leakage and scattering caused by rapid movement of the nozzles 3 are avoided, and the ink jet printing quality is significantly improved.
[0028] Further, the ink jet printing machine with adjustable ink jet distance further comprises a feeding lifting component 7, a feeding conveying wheel 8, a discharging lifting component 9 and a discharging conveying wheel 10, the feeding lifting component 7 and the discharging lifting component 9 are arranged in the inside of the shell 2, the feeding conveying wheel 8 is arranged at the output end of the feeding lifting component 7, and the discharging conveying wheel 10 is arranged at the output end of the discharging lifting component 9.
[0029] In the embodiment, referring to Figure 2 , the feeding lifting component 7 and the discharging lifting component 9 are self-locking air cylinders, after being started, the feeding conveying wheel 8 and the discharging conveying wheel 10 are driven to move downward, a pressure sensor 11 is arranged at the output end of the air cylinder, so as to detect whether the paper is contacted, and finally the paper is driven to pass the nozzles 3 for printing through rolling of the conveying wheels.
[0030] Further, the ink adsorption assembly further comprises a plurality of pressure sensors 11, an ink bin 12, a feeding port 13 and a plurality of ink processing units, the plurality of pressure sensors 11 are sequentially arranged on the corresponding sealing butt joint ring 6, the ink bin 12 is arranged on the inner top wall of the shell 2, the feeding port 13 is in communication with the ink bin 12, and the plurality of nozzles 3 are in communication with the ink bin 12 by the plurality of ink processing units.
[0031] In the embodiment, referring to Figure 5 and Figure 6 , the pressure sensor 11 is used to detect whether the sealing butt joint ring 6 is in contact and sealing below the nozzle 3, the ink bin 12 is used to store ink, the feeding port 13 is used to add ink, and the ink processing unit is used to process the output ink in the ink bin 12 and then delivered to the nozzle 3, so as to improve the printing quality.
[0032] Further, the ink adsorption assembly further comprises a distance adjusting plate 14 and two adjusting units, the two adjusting units are symmetrically arranged on the inner side wall of the shell 2, the distance adjusting plate 14 is arranged on the two adjusting units, and each of the plurality of nozzles 3 is fixedly connected to one side of the distance adjusting plate 14.
[0033] In the embodiment, referring to Figure 5 , the adjusting unit can drive the distance adjusting plate 14 to ascend and descend, thereby driving the nozzle 3 to move, so as to achieve the purpose of ink jet distance adjustment.
[0034] Further, the backflow mechanism comprises a first inclined plate 15, a second inclined plate 16, a backflow telescopic pipe 17 and a backflow pump 18, the first inclined plate 15 is arranged in the interior of the adsorption bin 4, the second inclined plate 16 is arranged below the first inclined plate 15, the backflow pump 18 is arranged above the ink bin 12, one end of the backflow telescopic pipe 17 is in communication with the backflow pump 18, and the other end of the backflow telescopic pipe 17 penetrates through the shell 2 and is located on one side of the second inclined plate 16.
[0035] In the embodiment, referring to Figures 3 to 5 , when the ink sucked from the nozzle 3 enters the adsorption bin 4, is collected by the first inclined plate 15, falls into the second inclined plate 16, and then falls into one side of the second inclined plate 16, i.e. the backflow telescopic pipe 17, by the inclined action of the second inclined plate 16, at this time, the backflow pump 18 is started, and the collected ink is adsorbed back to the ink bin 12 by the backflow telescopic pipe 17, so as to be reused.
[0036] Further, the knocking unit comprises a support ring 19, a plurality of knocking components 20 and a plurality of knocking blocks 21, the support ring 19 is sleeved outside the nozzle 3, the support ring 19 is fixedly connected with the distance adjusting plate 14, a plurality of the knocking components 20 are sequentially arranged on the support ring 19, and output ends of the plurality of the knocking components 20 are fixedly connected with corresponding knocking blocks 21.
[0037] In the embodiment, referring to Figure 6 , the support ring 19 supports the knocking component 20, the knocking component 20 is a self-locking air cylinder, and after being started, can drive the knocking block 21 to move, and then knock the outside of the nozzle 3, so as to improve the internal ink flow rate; meanwhile, a pressure sensor 11 is arranged at the output end of the air cylinder, and then by monitoring the pressure, each time of knocking is controlled within a preset pressure range, so as to avoid that the knocking strength is too large to cause damage to the nozzle 3.
[0038] Further, the ink processing unit comprises an ink pump 22, a conveying pipe 23, a filter 24, a degassing device 25, a pressure regulating valve 26, a buffer cavity 27 and an adjusting telescopic pipe 28, the ink pump 22 is arranged on the inner side wall of the ink bin 12, two ends of the conveying pipe 23 are respectively communicated with the ink pump 22 and one end of the adjusting telescopic pipe 28, the other end of the adjusting telescopic pipe 28 is communicated with the nozzle 3, and the filter 24, the degassing device 25, the pressure regulating valve 26 and the buffer cavity 27 are sequentially arranged on the conveying pipe 23.
[0039] In the embodiment, referring to Figure 6 , after the ink pump 22 is started, the ink in the ink bin 12 can be pumped into the conveying pipe 23, the ink passes through the filter 24 to filter solid particles, colloidal impurities or agglomerates, then the ink passes through the degassing device 25 to remove the dissolved or mixed gas in the ink, so as to prevent bubbles from gathering at the nozzle 3 to cause ink breakage, ink drop splitting or jet direction deviation; secondly, the ink passes through the pressure regulating valve 26 to stabilize the ink conveying pressure, so as to ensure that the ink cavity pressure of the ink jet head is constant, and avoid that the ink drop volume deviation or the jet angle deviation is caused due to pressure fluctuation; finally, the ink relies on the buffer cavity 27 to reduce the impact of pressure fluctuation on the ink jet head, so as to ensure the uniformity of ink drop jet; in addition, when the distance of the nozzle 3 is adjusted, the adjusting telescopic pipe 28 follows the expansion and contraction.
[0040] Further, the adjusting unit comprises a driving component 29, a threaded rod 30 and a threaded block 31, the driving component 29 is arranged in the interior of the shell 2, an output end of the driving component 29 is fixedly connected with the threaded rod 30, the threaded rod 30 is rotationally connected with the base 1, the threaded block 31 is matched with the threaded rod 30, and the threaded block 31 is arranged at one end of the distance adjusting plate 14.
[0041] In the embodiment, referring to Figure 2 , the driving component 29 drives the threaded rod 30 to rotate, cooperates with the threaded block 31, and further drives the distance adjusting plate 14 to ascend or descend.
[0042] Further, the ink adsorption assembly further comprises an adsorption adjusting unit arranged in the inside of the shell 2. The adsorption adjusting unit comprises a plurality of adsorption lifting components 32, a lifting frame 33, and a plurality of adsorption transverse moving components 34. The plurality of adsorption lifting components 32 are sequentially arranged at the top inside of the shell 2. The output ends of the plurality of adsorption lifting components 32 are fixedly connected with the lifting frame 33. The plurality of adsorption transverse moving components 34 are sequentially arranged at one side of the lifting frame 33. The output ends of the plurality of adsorption transverse moving components 34 penetrate through the lifting frame 33 and are fixedly connected with the adsorption bin 4.
[0043] In the embodiment, referring to Figure 2 , the adsorption lifting components 32 and the adsorption transverse moving components 34 are self-locking air cylinders. The adsorption lifting components 32 are started to drive the lifting frame 33 to ascend or descend, and the lifting frame 33 is moved to the lower side of the nozzle 3. At this time, the adsorption transverse moving components 34 are started to drive the adsorption bin 4 to move out of the lifting frame 33 and be located directly below the nozzle 3. Finally, the adsorption lifting components 32 are retracted to drive the adsorption bin 4 to move upward, so that the sealing butt joint ring 6 is adapted to and closely contacts the nozzle 3.
[0044] When the inkjet printing machine of the embodiment is used, paper is placed in the inside of the shell 2 for conveying. After the paper reaches the lower side of the nozzle 3, the nozzle 3 is started to spray ink for printing. After the printing is completed, the paper is output from the shell 2. When paper of different thicknesses is switched, the adsorption bin 4 is moved to the lower side of the nozzle 3. The sealing butt joint ring 6 is abutted and sealed with the lower side of the nozzle 3. Then, the negative pressure machine 5 is started to suck out the residual ink in the nozzle 3. The knocking unit knocks the outside of the nozzle 3 to improve the ink discharge efficiency. After the ink is sucked out and located in the adsorption bin 4, the backflow mechanism is started to backflow and reuse the sucked-out ink. After the adsorption bin 4 is moved away, the nozzle 3 is adjusted to ascend or descend so as to be moved to the optimal inkjet distance. Through the above structure, before the nozzle 3 is adjusted to the distance, the residual ink in the inside is sucked out and backflowed and stored for subsequent inkjet use. Not only the ink utilization rate is improved, but also ink leakage and scattering caused by the rapid movement of the nozzle 3 are avoided, and the inkjet printing quality is significantly improved.
[0045] Please refer to Figure 7The application also provides an inkjet method with adjustable inkjet distance, comprising the following steps: S1: placing paper inside the shell 2 for conveying; S2: starting the nozzle 3 after the paper reaches below the nozzle 3 to spray ink for printing; S3: outputting the paper from the shell 2 after printing is completed; S4: moving the adsorption bin 4 to below the nozzle 3 when switching different thickness of paper; S5: sealing the nozzle 3 below by the sealing butt joint ring 6, and then starting the negative pressure machine 5 to suck out the residual ink inside the nozzle 3; S6: knocking the outside of the nozzle 3 by the knocking unit to improve the ink discharge efficiency; S7: starting the backflow mechanism to backflow and reuse the sucked out ink after the ink is sucked out and located in the adsorption bin 4; S8: moving away the adsorption bin 4, and adjusting the nozzle 3 to move to the best inkjet distance.
[0046] S1: placing paper inside the shell 2 for conveying; S2: starting the nozzle 3 after the paper reaches below the nozzle 3 to spray ink for printing; S3: outputting the paper from the shell 2 after printing is completed; S4: moving the adsorption bin 4 to below the nozzle 3 when switching different thickness of paper; S5: sealing the nozzle 3 below by the sealing butt joint ring 6, and then starting the negative pressure machine 5 to suck out the residual ink inside the nozzle 3; S6: knocking the outside of the nozzle 3 by the knocking unit to improve the ink discharge efficiency; S7: starting the backflow mechanism to backflow and reuse the sucked out ink after the ink is sucked out and located in the adsorption bin 4; S8: moving away the adsorption bin 4, and adjusting the nozzle 3 to move to the best inkjet distance.
[0047] The above only discloses one or more preferred embodiments of the application, and cannot limit the scope of the application. Those skilled in the art can understand that all or part of the above-mentioned processes can be implemented, and equivalent changes made according to the claims of the application, still belong to the scope covered by the application.
Claims
1. An ink-jet printing machine with adjustable ink-jet distance, comprising a base, a shell and a plurality of nozzles, the shell is arranged above the base, and the plurality of nozzles are sequentially arranged inside the shell, characterized in that, it further comprises an ink adsorption assembly.
2. The ink-jet printing machine with adjustable ink-jet distance according to claim 1, characterized in that, the ink-jet printing machine further comprises a feeding lifting component, a feeding conveying wheel, a discharging lifting component and a discharging conveying wheel, the feeding lifting component and the discharging lifting component are both arranged inside the shell, the feeding conveying wheel is arranged at the output end of the feeding lifting component, and the discharging conveying wheel is arranged at the output end of the discharging lifting component.
3. The ink-jet printing machine with adjustable ink-jet distance according to claim 2, characterized in that, the ink adsorption assembly further comprises a plurality of pressure sensors, an ink tank, a feeding port and a plurality of ink processing units, the plurality of pressure sensors are sequentially arranged on the corresponding sealing butt joint ring, the ink tank is arranged on the inner top wall of the shell, the feeding port is in communication with the ink tank, and the plurality of nozzles are in communication with the ink tank through the plurality of ink processing units.
4. The ink-jet printing machine with adjustable ink-jet distance according to claim 3, characterized in that, the ink adsorption assembly further comprises a distance adjusting plate and two adjusting units, the two adjusting units are symmetrically arranged on the inner side wall of the shell, the distance adjusting plate is arranged on the two adjusting units, and the plurality of nozzles are all fixedly connected with one side of the distance adjusting plate.
5. The ink-jet printing machine with adjustable ink-jet distance according to claim 4, characterized in that, the backflow mechanism comprises a first inclined plate, a second inclined plate, a backflow telescopic pipe and a backflow pump, the first inclined plate is arranged inside the adsorption tank, the second inclined plate is arranged below the first inclined plate, the backflow pump is arranged above the ink tank, one end of the backflow telescopic pipe is in communication with the backflow pump, and the other end of the backflow telescopic pipe penetrates through the shell and is located at one side of the second inclined plate.
6. The ink-jet printing machine with adjustable ink-jet distance according to claim 5, characterized in that, the knocking unit comprises a supporting ring, a plurality of knocking components and a plurality of knocking blocks, the supporting ring is sleeved outside the nozzle, the supporting ring is fixedly connected with the distance adjusting plate, the plurality of knocking components are sequentially arranged on the supporting ring, and the output ends of the plurality of knocking components are fixedly connected with the corresponding knocking blocks.
7. The ink-jet printing machine with adjustable ink-jet distance according to claim 6, characterized in that, The ink processing unit comprises an ink pump, a conveying pipe, a filter, a degassing device, a pressure regulating valve, a buffer cavity and an adjusting telescopic pipe, the ink pump is arranged on the inner side wall of the ink bin, the conveying pipe is in communication with the ink pump and one end of the adjusting telescopic pipe respectively, the other end of the adjusting telescopic pipe is in communication with the nozzle, the filter, the degassing device, the pressure regulating valve and the buffer cavity are arranged on the conveying pipe in sequence.
8. The inkjet printing machine with adjustable inkjet distance according to claim 7, wherein, The adjusting unit comprises a driving component, a threaded rod and a threaded block, the driving component is arranged in the interior of the shell, the output end of the driving component is fixedly connected with the threaded rod, the threaded rod is rotationally connected with the base, the threaded block is matched with the threaded rod, and the threaded block is arranged at one end of the distance adjusting plate.
9. The inkjet printing machine with adjustable inkjet distance according to claim 8, wherein, The ink adsorption assembly further comprises an adsorption adjusting unit, and the adsorption adjusting unit is arranged in the interior of the shell. The adsorption adjusting unit comprises a plurality of adsorption lifting components, a lifting frame and a plurality of adsorption horizontal moving components, the plurality of adsorption lifting components are arranged in sequence on the inner top of the shell, the output ends of the plurality of adsorption lifting components are fixedly connected with the lifting frame, the plurality of adsorption horizontal moving components are arranged in sequence on one side of the lifting frame, the output ends of the plurality of adsorption horizontal moving components penetrate through the lifting frame and are fixedly connected with the adsorption bin.
10. An ink jet method with an adjustable ink jet distance, using the ink jet printer with an adjustable ink jet distance according to claim 9, characterized by, The method comprises the following steps: The paper is placed in the interior of the shell for conveying; After the paper reaches below the nozzle, the nozzle is started to spray ink for printing; After the printing is completed, the paper is output from the shell; When the paper with different thickness is switched, the adsorption bin is moved below the nozzle; The sealing butt joint ring is abutted and sealed below the nozzle, and then the negative pressure machine is started to suck out the residual ink in the nozzle; The knocking unit knocks the outside of the nozzle to improve the ink discharge efficiency; After the ink is sucked out and located in the adsorption bin, the backflow mechanism is started to backflow and reuse the sucked ink; The adsorption bin is moved away, and the nozzle is adjusted in lifting to move to the optimal inkjet distance.