Device and method for automatic printing of electronic seals and logos

Abstract

The present invention relates to the field of inkjet printing technology, and in particular to a device and method for automatic printing of electronic seals and logos, comprising a housing, a first scanner and a scanning and binding unit, wherein a printing unit is arranged in the housing, comprising a seal support, a paper feeding mechanism, a printing mechanism and a receiving mechanism. The present invention improves the stamping speed of documents to be printed while avoiding the occurrence of ghosting or offset during the inkjet process by setting a plurality of array-distributed inkjet stamping machines. At the same time, the present invention can effectively complete the sealing of the nozzles of each inkjet stamping machine, and receive the ink accumulated at the nozzle of the inkjet stamping machine when each inkjet stamping machine performs pre-inkjetting, effectively avoiding the occurrence of unclear stamping patterns caused by ink dripping onto the documents to be printed or the inkjet stamping machine directly spraying the ink accumulated at the nozzle onto the documents to be printed, and further improves the inkjet stamping efficiency of the device of the present invention for the documents to be printed.

Description

Technical Field

[0001] The present invention relates to the field of inkjet printing technology, and in particular to a device and method for automatic printing of electronic seals and logos. Background Art

[0002] Seals are widely used in various organizations and units to be printed on various documents to indicate identification or signature, and seals are accompanied by legal effects. Therefore, the use and preservation of seals are of great significance to individual or collective interests.

[0003] The prior art provides a printing control device, which seals a seal and places it in the cavity of the printing control device. The printing control device receives the printing instruction and completes the automatic printing inside the printing control device. During the printing process of the printing control device, the seal performs three-dimensional reciprocating linear motions in the front and back, left and right, and up and down directions in turn. The paper is fixed on a fixed platform, and the direction of the seal's up and down linear motion is perpendicular to the table of the fixed platform. Although such a printing control device can print multiple pages of bound paper, such as: bound multiple pages of contracts, bound multiple pages of bills, books, etc., a seal needs to be built into the cavity of the device. When other target seals need to be stamped, the seal in the printing control device needs to be replaced. If the number of seals used is large, the seal in the printing control device needs to be replaced frequently. Replacing the seal requires manual work by professionals, which is complicated to operate and inefficient.

[0004] Chinese Patent Publication No.: CN114834154A discloses a mobile inkjet stamping mechanism and an automatic stamping machine, the mobile inkjet stamping mechanism includes: an inkjet module support body, an inkjet module and a downward pressure drive assembly; the inkjet module support body is provided with an inkjet hole, a graded guide rail, and an inkjet head bracket, the graded guide rail includes a first smooth section, an ascending section, a second smooth section, a descending section and a third smooth section connected in sequence; the inkjet module includes an ink cartridge assembly, a parallel guide rod and an ink cartridge drive assembly, the parallel guide rod is hinged to the inkjet module support body, the ink cartridge assembly is slidably arranged on the parallel guide rod and the bottom end is slidably arranged with the graded guide rail, and the ink cartridge drive assembly is connected to the ink cartridge assembly. It can be seen that although the mobile inkjet stamping mechanism can complete the rapid printing of documents, the following problems still exist:

[0005] The above invention uses a single inkjet head to inkjet stamp documents, and is unable to stamp the corresponding position on the document to be stamped. At the same time, when using a single inkjet head, the inkjet head cannot be completely and effectively sealed. The ink in the inkjet head will drip onto the document, resulting in unclear stamping, thereby reducing the efficiency of inkjet stamping on the document. Summary of the invention

[0006] To this end, the present invention provides a device and method for automatic printing of electronic seals and logos, so as to overcome the problem in the prior art that it is impossible to accurately and clearly print documents, resulting in low efficiency of inkjet stamping on documents.

[0007] On the one hand, the present invention provides a method for automatic printing of electronic seals and logos, the device for automatic printing of electronic seals and logos comprises a housing, a first scanner arranged at a paper inlet of the housing to scan documents to be printed, and a scanning and binding unit arranged at a paper outlet of the housing to bind documents completed with printing, characterized in that a printing unit is arranged in the housing, comprising:

[0008] The printing support is used to carry the document to be printed; a first sensing sheet is provided on the lower surface of the printing support;

[0009] A paper feeding mechanism, which is arranged on the stamping support and is used to feed the document to be stamped to a corresponding position on the stamping support;

[0010] A printing mechanism, which is arranged on the seal support to perform inkjet transfer processing on the corresponding position of the surface of the document to be printed; the printing mechanism includes a loading plate hingedly arranged on the upper surface of the seal support and a plurality of inkjet stamping machines arranged in an array on the upper surface of the loading plate, each inkjet stamping machine is seamlessly spliced ​​and the angle between the connecting line of each inkjet stamping machine and the seal support is a preset angle, so as to perform inkjet printing on the corresponding position in the horizontal direction of the document to be printed by cooperating with inkjet, and each inkjet stamping machine cooperates with the paper feeding mechanism to perform inkjet printing on the corresponding position in the vertical direction of the document to be printed;

[0011] A receiving mechanism is arranged at the bottom of the seal support, comprising a bottom plate arranged below the seal support and a receiving plate arranged above the bottom plate and movable in a direction parallel to the bottom plate, wherein a plurality of receiving platforms are arranged on the receiving plate, each receiving platform is respectively located below the corresponding inkjet stamping machine, and the receiving plate is used to enable each receiving platform to respectively seal the nozzle of each inkjet stamping machine when the printing unit is not running, and to respectively receive the ink sprayed by each inkjet stamping machine when the inkjet stamping machine is pre-spraying ink; the receiving plate is also provided with a plurality of limit holes;

[0012] The printing support comprises:

[0013] The ink pad is arranged on the upper surface of the ink support and is used to load the documents to be printed output by the first scanner; the ink pad is provided with a plurality of support columns, each of which is arranged at a corresponding position on the upper surface of the ink pad and is used to support the loading plate so that a gap of a preset size is left between the loading plate and the upper surface of the ink pad; the surface of the ink pad is provided with a plurality of receiving holes, each of which is located below the corresponding inkjet stamping machine;

[0014] A traction plate, which is arranged on a side of the ink table close to the first scanner, and is used to constrain the document to be printed output by the first scanner;

[0015] A plurality of telescopic columns, each of which sequentially passes through the ink pad, the ink support and the bottom plate, and is used to set the bottom plate at a corresponding position below the ink support;

[0016] The ink pad is provided with a plurality of receiving holes, the positions of the receiving holes correspond to the positions of the nozzles of the inkjet stamping machines, so that the receiving pads can seal or receive the nozzles of the inkjet stamping machines;

[0017] The undertaking institutions also include:

[0018] A plurality of slide rails, each of which is arranged in parallel on the lower surface of the bottom plate;

[0019] A plurality of sliders, each of which is sleeved on the corresponding slide rails and each of which is on the lower surface of the receiving plate, so as to cooperate with the slide rails to constrain the moving path of the receiving plate;

[0020] A positioning plate, which is arranged below the ink pad and connected to the ink pad through a plurality of positioning posts, each positioning post respectively passes through the corresponding limiting hole to constrain the moving distance of the receiving plate relative to the bottom plate;

[0021] A driving block, which is arranged on the lower surface of the receiving plate and has a threaded hole formed inside the lower surface of the driving block;

[0022] A second motor is arranged below the bottom plate, and an output shaft of the second motor is connected to a horizontal stud, the axial direction of the horizontal stud is parallel to each of the slide rails and the horizontal stud cooperates with the threaded hole in the driving block to drive the driving block to drive the receiving plate to move horizontally in a corresponding direction;

[0023] A threaded sleeve, which is vertically arranged on the bottom plate and passes through the bottom plate;

[0024] A third motor is arranged below the positioning plate, wherein the output shaft of the third motor is connected with a vertical stud and the vertical stud cooperates with the threaded sleeve to drive the threaded sleeve to drive the bottom plate and the receiving plate to move vertically in corresponding directions;

[0025] The undertaking institutions also include:

[0026] A first sensor is disposed below the bottom plate and below the first sensing sheet, and is used to determine a vertical distance between the bottom plate and the ink pad according to the first sensing sheet;

[0027] A second sensing sheet, which is arranged on a side wall of the driving block;

[0028] A second sensor, which is arranged on the lower surface of the bottom plate and corresponds to the position of the second sensing sheet, and is used to determine the horizontal movement distance of the receiving plate relative to the bottom plate according to the second sensing sheet;

[0029] For a single receiving platform, it includes:

[0030] A plug, which is arranged on one side of the upper surface of the receiving platform and is used to pass through the corresponding receiving hole to seal the corresponding nozzle in the inkjet stamping machine;

[0031] A receiving pad is arranged on the upper surface of the receiving platform and adjacent to the plug, and is used to receive the ink outputted by the corresponding inkjet stamping machine;

[0032] A buffer spring, which is arranged inside the receiving platform and is used to buffer the sealing pressure of the plug on the nozzle;

[0033] Step S1, before the printing unit prints the document to be printed, the third motor is started to rotate the vertical stud to drive the threaded sleeve to drive the receiving plate and the bottom plate to descend, and the plug descends to release the seal of each of the nozzles;

[0034] Step S2, when the first sensor descends to below the first sensing sheet, the first sensing sheet is out of the sensing range of the first sensor, and at this time, the second motor is controlled to start, so that the horizontal stud drives the driving block to drive the receiving plate to move horizontally;

[0035] Step S3, when the second sensing sheet leaves the sensing range of the second sensor, each inkjet stamping machine is controlled to pre-spray ink to spray ink onto each receiving pad, and when each inkjet stamping machine completes the pre-spray and the inkjet stamping machine sprays ink normally, the paper feeding mechanism is controlled to transport the document to be printed to the corresponding position on the stamping table so that the inkjet stamping machine can stamp at the corresponding position on the document to be printed;

[0036] Step S4, when the printing unit is running, the paper feeding mechanism transports the document to be printed to the corresponding position on the upper surface of the printing support through the traction plate and controls the inkjet stamping group to start when the document to be printed is located at the corresponding position in the gap between the loading plate and the printing table to inkjet stamp on the upper surface of the document to be printed to complete the stamping of the document to be printed;

[0037] Wherein, step S4 further comprises: when the printing unit completes the printing of the document, the interactive module delivers the document to the scanning and binding unit and controls the scanning and binding unit to collect image information of the document after printing, and the interactive module determines whether the printing of the document by the printing unit is qualified according to the longitudinal distance between the actual position of the printing pattern in the document in the image information and the expected position of the printing pattern in the document set in the interactive module:

[0038] If the longitudinal distance is less than or equal to the first preset longitudinal distance set in the interaction module, the interaction module determines that the printing unit is qualified for the printing of the document and determines that the printing unit has completed the printing of the document, and the interaction module controls the printing unit to print the next document;

[0039] If the longitudinal distance is greater than the first preset longitudinal distance and less than or equal to the second preset longitudinal distance set in the interactive module, the interactive module determines that the printing unit is unqualified for printing the document, determines that the printing unit has completed printing the document, controls the printing unit to print the next document, and adjusts the rotation speed of the paper feed lower roller to a corresponding value according to the difference between the longitudinal distance and the first preset longitudinal distance when printing the next document;

[0040] If the longitudinal distance is greater than the second preset longitudinal distance, the interactive module determines that the printing unit is unqualified for the printing of the document, determines that the printing unit has not completed the printing of the document, issues a reprint alarm, and adjusts the rotation speed of the lower paper feed roller to a corresponding value according to the difference between the longitudinal distance and the second preset longitudinal distance during reprinting;

[0041] Step S5, when the inkjet stamping machine completes the stamping of the document to be stamped, the steps S1 to S3 are run in reverse to control the receiving mechanism to run the above process in reverse to perform sealing processing on each inkjet stamping machine.

[0042] On the other hand, the present invention also provides a device based on the method for automatic printing of electronic seals and logos, comprising:

[0043] The paper feeding mechanism comprises:

[0044] A paper feed roller assembly is arranged on a side of the ink pad close to the first scanner, and is used to receive the document to be printed output by the first scanner and transport the document to be printed to a corresponding position on the ink pad.

[0045] A paper discharge roller assembly, which is arranged on a side of the ink station away from the first scanner, and is used to receive the stamped document output by the paper feed roller assembly and output the document to the ink support;

[0046] A first motor is arranged on a side wall of the printing support close to the paper feed driven wheel, and the output of the first motor is respectively connected to the paper feed driven wheel and the paper discharge driven wheel through a belt to drive the paper feed roller group and the paper discharge roller group to rotate synchronously;

[0047] The paper feed roller assembly comprises an upper paper feed roller arranged on the upper surface of the ink pad and a lower paper feed roller arranged on the lower surface of the ink pad, and one end of the lower paper feed roller close to the upper paper feed roller passes through an input hole opened at a corresponding position of the ink pad to cooperate with the upper paper feed roller; a paper feed driven wheel is arranged at the end of the lower paper feed roller, and the first motor is connected to the paper feed driven wheel through a belt to drive the paper feed roller assembly to rotate;

[0048] The paper discharge roller group includes an upper paper discharge roller arranged on the upper surface of the ink pad and a lower paper discharge roller arranged on the lower surface of the ink pad. One end of the lower paper discharge roller close to the upper paper discharge roller passes through an output hole opened at a corresponding position of the ink pad to cooperate with the upper paper discharge roller. A paper discharge driven wheel is provided at the end of the lower paper discharge roller, and the paper discharge driven wheel and the paper feed driven wheel are located on the same side. The first motor is connected to the paper discharge driven wheel through a belt to drive the paper discharge roller group to rotate.

[0049] Furthermore, a plurality of auxiliary driven wheels are provided on the side wall of the printing bracket close to the first motor, and each auxiliary driven wheel is respectively arranged around the output shaft of the first motor; the output shaft of the first motor is connected to the paper feed driven wheel, the paper discharge driven wheel and each auxiliary driven wheel through a belt to drive the paper feed lower roller and the paper discharge lower roller to rotate.

[0050] Compared with the prior art, the beneficial effect of the present invention lies in that, by arranging a plurality of array-distributed inkjet stamping machines in the inkjet stamping unit, when the device for automatic printing of electronic seals and logos of the present invention is used to print the documents to be printed, a plurality of corresponding inkjet stamping machines can be selected to quickly print at corresponding positions on the documents to be printed, which effectively improves the stamping speed of the documents to be printed and effectively avoids the occurrence of ghosting or offset in the process of moving inkjet, thereby effectively improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos of the present invention for the documents to be printed, and at the same time, each inkjet stamping machine can be used to print the documents to be printed. The seamless splicing of the machines can make the seal image printed by the inkjet stamping machine more complete, thereby ensuring the printing of the entire page of the document to be printed; the present invention can effectively complete the sealing of the nozzles of each inkjet stamping machine by arranging a receiving mechanism, and receive the ink accumulated at the nozzle of the inkjet stamping machine when each inkjet stamping machine performs pre-ink spraying, which can effectively prevent the ink from dripping onto the document to be printed or the inkjet stamping machine directly spraying the ink accumulated at the nozzle onto the document to be printed, resulting in unclear seal patterns, thereby further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the document to be printed.

[0051] Furthermore, the present invention, by arranging an ink pad on the ink support, can better receive the received documents to be printed, and make the documents to be printed stay stably in the corresponding positions, thereby further avoiding the occurrence of ghosting or offset during the printing process. At the same time, by arranging a traction plate on the paper feed side of the ink pad, the present invention can effectively transport the documents to be printed output by the first scanner to the corresponding positions on the ink pad, while improving the inkjet stamping accuracy of the inkjet stamping machine for the documents to be printed, and further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the documents to be printed.

[0052] Furthermore, corresponding positions on the ink pad described in the present invention are respectively provided with receiving holes, and each receiving pad completes the sealing and receiving of the nozzle of the corresponding inkjet stamping machine through the receiving hole, which can effectively prevent the ink on the nozzle from dripping onto the surface of the ink pad and causing contamination of the document to be printed. While further avoiding the occurrence of ghosting or offset in the mobile inkjet process, it further improves the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the document to be printed.

[0053] Furthermore, the present invention can effectively constrain the moving path of the receiving plate within a preset range by using a plurality of slide rails and a plurality of sliders, so that the receiving plate can complete the precise sealing and precise receiving of each of the inkjet stamping machines, while further avoiding the ink on the nozzle from dripping onto the surface of the ink pad and causing contamination of the documents to be printed, and further avoiding the occurrence of ghosting or offset during the mobile inkjet process, and further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the documents to be printed.

[0054] Furthermore, the present invention, by setting a first sensor, a second sensor, a first sensing sheet and a second sensing sheet, can effectively determine the vertical movement distance of the base plate and the horizontal movement distance of the receiving plate by using corresponding sensors in cooperation with corresponding sensing sheets, thereby accurately completing the blocking and receiving processing of the nozzles of each inkjet stamping machine, while further avoiding the occurrence of ghosting or offset during the printing process, and further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos of the present invention for the documents to be printed.

[0055] Furthermore, the present invention provides a receiving plate under the seal bracket and provides a plurality of receiving platforms with plugs and receiving pads on the receiving plate, thereby blocking the nozzles of each inkjet stamping machine when the inkjet stamping machine is not in use, and receiving the ink sprayed by the inkjet stamping machine during pre-inkspraying before the inkjet stamping machine is operated. By blocking the nozzles of each inkjet stamping machine and receiving the sprayed ink during pre-inkspraying, it is possible to ensure that each inkjet stamping machine can smoothly discharge ink during operation, while further avoiding the occurrence of ghosting or deviation in the process of using the seal, and further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the documents to be printed.

[0056] Furthermore, the paper feeding mechanism described in the present invention can effectively prevent the occurrence of document retention, compression or tearing in the ink pad by providing a synchronously operating paper feed roller group and a paper discharge roller group. While ensuring the integrity of the documents to be printed, it further improves the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the documents to be printed.

[0057] Furthermore, the present invention, by respectively arranging rollers on the upper surface and the lower surface of the ink pad, can effectively complete the transportation of the documents to be printed by using the coordinated rotation of the two rollers, thereby improving the positioning accuracy of the documents to be printed and further avoiding the occurrence of ghosting or offset during the mobile inkjet process, thereby further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the documents to be printed.

[0058] Furthermore, the first motor realizes the synchronous operation of the paper feed roller group and the paper discharge roller group through the auxiliary driven wheel, the paper feed driven wheel and the paper discharge driven wheel, while further improving the positioning accuracy of the document to be printed, further avoiding the occurrence of ghosting or offset during the mobile inkjet process, thereby further improving the inkjet stamping efficiency of the device for automatic printing of electronic seals and logos described in the present invention for the document to be printed. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a schematic diagram of the internal structure of a device for automatic printing of electronic seals and logos provided with the stamping device of the present invention;

[0060] Figure 2 It is a structural schematic diagram of the printing mechanism of the present invention;

[0061] Figure 3 It is a structural schematic diagram of the printing support and the paper feeding mechanism of the present invention;

[0062] Figure 4 It is a structural schematic diagram of the paper feeding mechanism and the receiving mechanism of the present invention;

[0063] Figure 5 It is a structural schematic diagram of the receiving mechanism of the present invention;

[0064] Figure 6 It is a structural schematic diagram of the receiving mechanism of the present invention without a receiving platform;

[0065] Figure 7 It is a structural schematic diagram of the bottom plate of the present invention;

[0066] Figure 8 It is a structural schematic diagram of the bottom of the receiving mechanism of the present invention;

[0067] Fig. 9 It is a structural schematic diagram of the bottom of the receiving mechanism of the present invention at another viewing angle;

[0068] Fig.10 The present invention is a flowchart of the method for automatically printing electronic seals and logos. DETAILED DESCRIPTION

[0069] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0070] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0071] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0072] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] See also Figure 1As shown, it is a schematic diagram of the internal structure of a device for automatic printing of electronic seals and logos provided with the stamping device of the present invention, and the device for automatic printing of electronic seals and logos comprises a housing 1, a first scanner 2, a printing unit 3 and a scanning and binding unit 4. The first scanner 2 is arranged at the document inlet of the housing 1, and is used to carry and scan the documents to be printed; the printing unit 3 is arranged at the output end of the first scanner 2, and is used to print the documents to be printed output by the first scanner 2 by inkjet stamping; the scanning and binding unit 4 is located below the printing unit 3 and is connected to the output end of the printing unit 3, and is used to scan and archive the documents after the stamping and bind the documents.

[0074] When the stamping device of the present invention is in operation, the interactive module (not shown in the figure) in the housing 1 collects the barcode on the surface of the document to be printed and controls the first scanner 2 to scan the document to be printed after the collection is completed. The first scanner 2 transports the scanned document to be printed to the printing unit 3. The printing unit 3 performs inkjet stamping at the corresponding position of the document to be printed and transports the stamped document to the scanning and binding unit 4. The scanning and binding unit 4 receives each document in turn and binds the document when the reception is completed. The scanning and binding unit 4 outputs the document to the stamping device when the binding of the document is completed.

[0075] See also Figure 2 As shown, it is a schematic diagram of the structure of the printing unit 3 of the present invention. The printing unit 3 of the present invention includes a printing support 31, a paper feeding mechanism 32, a printing mechanism 33 and a receiving mechanism 34 (not shown in this figure). Among them, the paper feeding mechanism 32 is arranged above the printing support 31 to transport the document to be printed to the corresponding position; the printing mechanism 33 is arranged above the printing support 31 to spray ink at the corresponding position on the upper surface of the document to be printed to complete the printing of the document to be printed; the receiving mechanism 34 is arranged at the bottom of the printing support 31 to block the nozzles of each inkjet stamping machine 332 when the printing mechanism 33 is not running, and to receive the ink output by each inkjet stamping machine 332 before the printing mechanism 33 is running.

[0076] When the printing unit 3 of the present invention is not in operation, the receiving mechanism 34 seals the nozzles of the inkjet stamping machines 332. Before the printing unit 3 is in operation, the interactive module controls the receiving mechanism 34 to release the seals on the nozzles of the inkjet stamping machines 332 and controls the inkjet stamping machines 332 to pre-spray ink. The receiving mechanism 34 receives the ink output by the inkjet stamping machines 332 during the pre-spraying of ink to ensure that the inkjet stamping machines 332 can spray ink evenly during operation. When the printing unit 3 is in operation, the interactive module controls the paper feeding mechanism 32 to transport the document to be printed output by the first scanner 2 to the corresponding position on the upper surface of the printing support 31 and controls the inkjet stamping group to start when the document to be printed is located at the corresponding position on the upper surface of the printing support 31 to inkjet stamp the upper surface of the document to be printed to complete the printing of the document to be printed.

[0077] Please continue reading Figure 2 As shown, it is a schematic diagram of the structure of the printing mechanism 33 of the present invention. The printing mechanism 33 of the present invention includes a loading plate 331 hinged to the printing support 31 and a plurality of inkjet stamping machines 332 arranged on the loading plate 331. Each of the inkjet stamping machines 332 is distributed in an array at a corresponding position on the loading plate 331, and is used to perform inkjet stamping at a corresponding position in the horizontal direction of the document to be printed. When the printing mechanism 33 is running, it determines the specific stamping position on the document to be printed, and after the determination is completed, it controls the paper feeding mechanism 32 to transport the document to be printed to the corresponding position on the printing support 31 to complete the longitudinal positioning of the stamp on the document to be printed. When the paper feeding mechanism 32 transports the document to be printed to the corresponding position, the corresponding inkjet stamping machine 332 performs inkjet stamping on the document to be printed to complete the lateral positioning of the stamp on the document to be printed and completes the stamping of the document to be printed at the corresponding position.

[0078] See also Figure 3 As shown, it is a schematic diagram of the structure of the printing support 31 and the paper feeding mechanism 32 of the present invention. The printing support 31 of the present invention includes a printing plate 311, a plurality of telescopic columns 312, a plurality of supporting columns 313 and a traction plate 314. The printing plate 311 is arranged on the upper surface of the printing support 31 to load the documents to be printed; each of the telescopic columns 312 is respectively arranged at a corresponding position on the upper surface of the printing support 31 and the lower end of each telescopic column 312 is connected to the receiving mechanism 34 to constrain the receiving mechanism 34; each of the supporting columns 313 is respectively arranged at a corresponding position on the upper surface of the printing support 31 to support the loading plate 331 so that a gap is formed between the loading plate 331 and the printing plate 311; the traction plate 314 is arranged on the side of the printing support 31 close to the first scanner 2 to constrain the running direction of the documents to be printed output by the first scanner 2.

[0079] When the printing unit 3 of the present invention is in operation, the first scanner 2 transports the scanned document to be printed to the corresponding position in the gap between the loading plate 331 and the printing table 311 through the traction plate 314, and the interaction module controls the corresponding inkjet stamping machine 332 to start to complete the printing of the document to be printed.

[0080] Specifically, the ink pad 311 of the present invention is provided with a plurality of receiving holes 3111, and the position of each receiving hole 3111 corresponds to the position of each inkjet stamping machine nozzle, so that the corresponding components in the receiving mechanism 34 can complete the sealing or receiving of each inkjet stamping machine nozzle.

[0081] See also Figure 3 and Figure 4 As shown, Figure 4 The schematic diagram of the structure of the paper feeding mechanism 32 and the receiving mechanism 34 of the present invention is shown in FIG. 3 . The paper feeding mechanism 32 of the present invention includes a first motor 321, a paper feed roller group 322 and a paper discharge roller group 323. The first motor 321 is arranged on one side of the stamp support 31 to drive the paper feed roller group 322 and the paper discharge roller group 323. The paper feed roller group 322 is arranged on one side of the stamp table 311 close to the traction plate 314 to transport the document to be stamped output by the first scanner 2 to the stamp table 311. The paper discharge roller group 323 is arranged on one side of the stamp table 311 away from the traction plate 314 to output the stamped document to the printing unit 3.

[0082] Specifically, the paper feed roller group 322 of the present invention includes an upper paper feed roller 3221 and a lower paper feed roller 3222, wherein the upper paper feed roller 3221 is arranged on the upper surface of the ink pad 311, and the lower paper feed roller 3222 is arranged on the lower surface of the ink pad 311; an input hole 3112 is opened on the surface of the ink pad 311, and the lower paper feed roller 3222 cooperates with the upper paper feed roller 3221 through the input hole 3112 to transport the document to be printed to the ink pad 311; a paper feed driven wheel 3223 is coaxially arranged on one side of the lower paper feed roller 3222 close to the first motor 321, and the paper feed driven wheel 3223 is arranged on the outer wall of the ink bracket 31.

[0083] Specifically, the paper discharge roller group 323 of the present invention includes an upper paper discharge roller 3231 and a lower paper discharge roller 3232, wherein the upper paper discharge roller 3231 is arranged on the upper surface of the ink pad 311, and the lower paper discharge roller 3232 is arranged on the lower surface of the ink pad 311; an output hole 3113 is opened on the surface of the ink pad 311, and the lower paper discharge roller 3232 cooperates with the upper paper discharge roller 3231 through the output hole 3113 to output the stamped document to the ink pad 311; the lower paper discharge roller 3232 is coaxially arranged with a paper discharge driven wheel 3233 on one side close to the first motor 321, and the paper discharge driven wheel 3233 is arranged on the outer wall of the ink bracket 31.

[0084] Specifically, the side wall of the seal holder 31 is further provided with a plurality of auxiliary driven wheels 315, each of which is respectively arranged around the output shaft of the first motor 321. The output shaft of the first motor 321 is connected to the paper feed driven wheel 3223, the paper discharge driven wheel 3233 and each of the auxiliary driven wheels 315 through a belt to drive the paper feed lower roller 3222 and the paper discharge lower roller 3232 to rotate. A first sensing sheet 316 is provided on the lower surface of the seal holder 31 to determine the vertical distance between the receiving mechanism 34 and the seal pad 311.

[0085] Please refer to Figure 5 As shown, it is a schematic diagram of the structure of the receiving mechanism 34 of the present invention. The receiving mechanism 34 of the present invention includes a receiving plate 341 and a bottom plate 342. The bottom plate 342 is connected to the stamp support 31 through the telescopic column 312 to carry the receiving plate 341; the receiving plate 341 is movably connected to the bottom plate 342 to seal or receive the nozzles of each inkjet stamping machine 332;

[0086] Specifically, the upper surface of the receiving plate 341 of the present invention is provided with a plurality of receiving platforms 3411 in an array, and each receiving platform 3411 is respectively arranged below the corresponding receiving hole 3111, so as to seal and receive the nozzle of the corresponding inkjet stamping machine 332. For a single receiving platform 3411, its upper surface is respectively provided with a plug 3412 for sealing the nozzle of the corresponding inkjet stamping machine and a receiving pad 3413 for receiving the ink ejected from the nozzle, and a buffer spring is provided at the bottom of each plug 3412 and each receiving pad 3413. The receiving plate 341 is also provided with a plurality of limiting holes 3414, so as to restrict the moving distance of the receiving plate 341 relative to the bottom plate 342.

[0087] When the printing unit 3 of the present invention is not in operation, the receiving plate 341 moves so that each plug 3412 is located below each receiving hole 3111, and the receiving plate 341 rises to allow each plug 3412 to pass through the receiving hole 3111 and complete the sealing of each nozzle. Before the printing unit 3 of the present invention prints the document to be printed, the receiving plate 341 moves downward to make each of the plugs 3412 away from each of the nozzles to release the seal of each of the inkjet stamping machines 332. When each of the plugs 3412 moves to under the stamping platform 311, the receiving plate 341 moves to make each of the receiving pads 3413 located under each of the receiving holes 3111. At this time, each of the inkjet stamping machines 332 performs pre-inkspraying to spray ink onto each of the receiving pads 3413. When each of the inkjet stamping machines 332 completes pre-inkspraying and each of the inkjet stamping machines 332 sprays ink normally, the paper feeding mechanism 32 transports the document to be printed to the corresponding position on the stamping platform 311, so that the inkjet stamping machine 332 prints at the corresponding position on the document to be printed.

[0088] Specifically, for a single plug 3412, a scraper (not shown in the figure) is provided on its upper surface close to one end of the corresponding receiving pad 3413 for scraping off the ink remaining at the nozzle of the corresponding printing mechanism 33. When the receiving plate 341 moves to make the plug 3412 seal the corresponding nozzle or make the plug 3412 contact the seal of the corresponding nozzle, each scraper can move against the end of the corresponding nozzle to scrape off the ink remaining on the surface of the nozzle.

[0089] See also Figures 6 to 9 As shown, Figure 6 It is a structural schematic diagram of the receiving mechanism 34 of the present invention without the receiving platform 3411. Figure 7 is a schematic diagram of the structure of the bottom plate 342 of the present invention, Figure 8 This is a schematic diagram of the structure below the bottom plate 342 of the receiving mechanism 34 of the present invention. Fig. 9 It is a schematic structural diagram of the bottom of the bottom plate 342 of the receiving mechanism 34 of the present invention at another viewing angle.

[0090] The receiving mechanism 34 of the present invention is also provided with a plurality of slide rails 3421, a plurality of sliders 3415, a positioning plate 3114, a driving block 3416, a threaded sleeve 3422, a second motor 3423, a third motor 3115, a first sensor 3425, a second induction sheet 3417 and a second sensor 3426. The slide rails 3421 are respectively arranged in parallel on the lower surface of the bottom plate 342, the sliders 3415 are respectively arranged on the lower surface of the receiving plate 341 and the sliders 3415 are respectively sleeved on the corresponding slide rails 3421 to constrain the moving path of the receiving plate 341 relative to the bottom plate 342; the positioning plate 3114 is connected to the lower surface of the ink pad 311 through a plurality of positioning posts, and the positioning posts respectively pass through the corresponding limiting holes 3414 to control the movement of the receiving plate 341 relative to the bottom plate 342 The driving block 3416 is arranged on the lower surface of the receiving plate 341 and a threaded hole is opened inside the driving block 3416; the threaded sleeve 3422 is vertically arranged on the bottom plate 342 and the threaded sleeve 3422 passes through the bottom plate 342; the second motor 3423 is arranged below the bottom plate 342, and the output shaft of the second motor 3423 is connected with a horizontal stud 3424 and the axial direction of the horizontal stud 3424 is parallel to each of the slide rails 3421, and the horizontal stud 3424 and the driving block 3416 are connected. The threaded hole in 416 is used to drive the driving block 3416 to drive the receiving plate 341 to move horizontally in the corresponding direction; the third motor 3115 is arranged below the positioning plate 3114, and the output shaft of the third motor 3115 is connected with a vertical stud 3116, and the vertical stud 3116 cooperates with the threaded sleeve 3422 to drive the threaded sleeve 3422 to drive the bottom plate 342 and the receiving plate 341 to move vertically in the corresponding direction; the first sensor 3425 is arranged below the bottom plate 342 The first sensor 3425 is located below the first sensing sheet 316, and is used to determine the vertical distance between the bottom plate 342 and the ink pad 311 according to the first sensing sheet 316; the second sensing sheet 3417 is arranged on the side wall of the driving block 3416, and the second sensor 3426 is arranged on the lower surface of the bottom plate 342 and the second sensor 3426 corresponds to the position of the second sensing sheet 3417, and is used to determine the horizontal movement distance of the receiving plate 341 relative to the bottom plate 342 according to the second sensing sheet 3417.

[0091] Before the printing unit 3 is started, the third motor 3115 is started to rotate the vertical stud 3116 to drive the threaded sleeve 3422 to drive the receiving plate 341 and the bottom plate 342 to descend. At this time, the plug 3412 descends to release the seal of each nozzle. When the first sensor 3425 descends to below the first sensing sheet 316, the first sensing sheet 316 is out of the sensing range of the first sensor 3425. At this time, the interactive module determines that each plug 3412 is located below the receiving hole 3111, and controls the second motor 3423 to start, so that the horizontal stud 3116 is rotated to drive the threaded sleeve 3422 to drive the receiving plate 341 and the bottom plate 342 to descend. 424 drives the driving block 3416 to drive the receiving plate 341 to move horizontally. When the second sensing sheet 3417 leaves the sensing range of the second sensor 3426, the interactive module determines that each receiving pad 3413 is located below the corresponding receiving hole 3111, and controls each inkjet stamping machine 332 to pre-spray ink. When the interactive module determines that each inkjet stamping machine 332 has completed pre-spraying ink and each inkjet stamping machine 332 is spraying ink normally, the interactive module controls the paper feeding mechanism 32 to transport the document to be printed to the corresponding position on the stamping table 311 so that the inkjet stamping machine 332 can be used for printing at the corresponding position on the document to be printed. When the interactive module determines that the inkjet stamping machine 332 has completed the printing of the document to be printed, the receiving mechanism 34 is controlled to reversely run the above process to seal each inkjet stamping machine 332.

[0092] See also Fig.10 As shown, it is a flow chart of the method for automatic printing of electronic seals and logos according to the present invention. The printing method based on the device for automatic printing of electronic seals and logos according to the present invention comprises:

[0093] Step S1, before the printing unit 3 prints the document to be printed, the third motor 3115 is started to rotate the vertical stud 3116 to drive the threaded sleeve 3422 to drive the receiving plate 341 and the bottom plate 342 to descend, and the plug 3412 descends to release the seal of each of the nozzles;

[0094] Step S2, when the first sensor 3425 drops below the first sensing sheet 316, the first sensing sheet 316 is out of the sensing range of the first sensor 3425, and at this time, the second motor 3423 is controlled to start, so that the horizontal stud 3424 drives the driving block 3416 to drive the receiving plate 341 to move;

[0095] Step S3, when the second sensing sheet 3417 is out of the sensing range of the second sensor 3426, each inkjet stamping machine 332 is controlled to pre-spray ink to spray ink onto each receiving pad 3413, and when each inkjet stamping machine 332 completes the pre-spray and the inkjet stamping machine 332 sprays ink normally, the paper feeding mechanism 32 is controlled to transport the document to be printed to the corresponding position on the stamping table 311 so that the inkjet stamping machine 332 can stamp at the corresponding position on the document to be printed;

[0096] Step S4, when the printing unit 3 is in operation, the paper feeding mechanism 32 transports the document to be printed to the corresponding position on the upper surface of the printing support 31 through the traction plate 314 and controls the inkjet stamping group to start when the document to be printed is located at the corresponding position in the gap between the loading plate 331 and the printing table 311 to inkjet stamp on the upper surface of the document to be printed to complete the printing of the document to be printed;

[0097] Step S5, when the inkjet stamping machine 332 completes stamping the document to be stamped, the steps S1 to S3 are reversely executed to control the receiving mechanism 34 to reversely execute the above process to perform sealing processing on each inkjet stamping machine 332.

[0098] Please continue reading Figures 1 to 10 As shown, the interactive module of the present invention delivers the document to the scanning and binding unit 4 when the printing unit 3 completes the printing of the document and controls the scanning and binding unit 4 to collect image information of the document after printing. The interactive module determines whether the printing of the document by the printing unit 3 is qualified according to the longitudinal distance D between the actual position of the printing pattern in the document in the image information and the expected position of the printing pattern in the document set in the interactive module:

[0099] If the longitudinal distance D is less than or equal to the first preset longitudinal distance D1 set in the interaction module, the interaction module determines that the printing unit 3 is qualified for the printing of the document and determines that the printing unit 3 has completed the printing of the document, and the interaction module controls the printing unit 3 to print the next document;

[0100] If the longitudinal distance D is greater than the first preset longitudinal distance D1 and is less than or equal to the second preset longitudinal distance D2 set in the interactive module, the interactive module determines that the printing unit 3 is unqualified for printing the document, and the interactive module determines that the printing unit 3 completes printing the document, controls the printing unit 3 to print the next document, and adjusts the rotation speed of the paper feed lower roller 3222 to a corresponding value according to the difference between the longitudinal distance D and the first preset longitudinal distance D1 when printing the next document;

[0101] If the longitudinal distance D is greater than the second preset longitudinal distance D2, the interactive module 13 determines that the printing unit 3 is unqualified for the printing of the document, and the interactive module determines that the printing unit 3 has not completed the printing of the document, issues a reprint alarm, and adjusts the rotation speed of the paper feed lower roller 3222 to a corresponding value according to the difference between the longitudinal distance D and the second preset longitudinal distance D2 during reprinting;

[0102] The present invention can effectively ensure the printing accuracy of the file by detecting the printing position for the file and quickly adjusting the transmission speed of the next file or reprinting when the printing position does not meet the expectations. At the same time, when the actual printing position deviates too much from the expected printing position, the printing can be effectively stopped and the file can be reprinted. While further improving the printing accuracy for the file, the printing efficiency of the device for automatic printing of electronic seals and logos described in the present invention is effectively improved.

[0103] Specifically, when the longitudinal distance D is greater than the first preset longitudinal distance D1 and less than or equal to the second preset longitudinal distance D2, the interactive module calculates the difference between the longitudinal distance D and the first preset longitudinal distance D1 and records it as the correction difference △Da, and sets △Da=D-D1. The interactive module adjusts the rotation speed of the paper feed lower roller 3222 of the printing unit 3 to a corresponding value when printing the next file according to the correction difference △Da:

[0104] If the correction difference △Da is less than or equal to the first preset correction difference △Da1 set in the interaction module, the interaction module uses the first preset speed correction coefficient α1 to adjust the speed of the paper feed lower roller 3222 when conveying the next file to a corresponding value, wherein 1<α1<1.2;

[0105] If the correction difference △Da is greater than the first preset correction difference △Da1 and less than or equal to the second preset correction difference △Da2 set in the interaction module, the interaction module uses the second preset speed correction coefficient α2 to adjust the speed of the paper feed lower roller 3222 when conveying the next file to a corresponding value, wherein △Da2>△Da1, 1.2<α2<1.5;

[0106] If the correction difference △Da is greater than the second preset correction difference △Da2, the interactive module uses the third preset speed correction coefficient α3 to adjust the speed of the paper feeding lower roller 3222 when conveying the next document to a corresponding value, wherein 1.5<α3<1.7;

[0107] When the interactive module uses the i-th preset correction coefficient αi to adjust the rotational speed of the lower paper feed roller 3222 when conveying the next document to the corresponding value, i=1, 2 is set. If the printing position is close to the side of the paper feed roller group 322 relative to the expected position, the adjusted rotational speed W'=W×αi is set. If the printing position is close to the side of the paper output roller group 323 relative to the expected position, the adjusted rotational speed W'=W×(2-αi) is set.

[0108] The present invention calculates the difference between the longitudinal distance and the first preset longitudinal distance and, based on the difference, specifically adjusts the rotation speed of the paper feed lower roller 3222 when conveying the next file, thereby ensuring the conveying time of the file while quickly conveying the file to the corresponding position, thereby effectively improving the printing accuracy of the device for automatic printing of electronic seals and logos according to the present invention, and further improving the printing efficiency of the device for automatic printing of electronic seals and logos according to the present invention.

[0109] Specifically, when the interactive module completes the adjustment of the rotation speed of the paper feeding lower roller 3222, the interactive module controls the printing unit 3 to print the next file and controls the scanning and binding unit 4 to collect the image information of the printed file after printing to determine the actual position of the printed pattern of the file, and determines whether the printing of the file by the printing unit 3 is qualified according to the longitudinal distance D' between the actual position and the corresponding expected position.

[0110] If the longitudinal distance D' is less than or equal to the first preset longitudinal distance D1 set in the interaction module, the interaction module determines that the printing unit 3 is qualified for the printing of the document and determines that the printing unit 3 has completed the printing of the document, and the interaction module controls the printing unit 3 to print the next document;

[0111] If the longitudinal distance D' is greater than the first preset longitudinal distance D1 and is less than or equal to the second preset longitudinal distance D2 set in the interactive module, the interactive module determines that the printing unit 3 is unqualified for printing the document, and the interactive module determines that the printing unit 3 completes printing the document, controls the printing unit 3 to print the next document, and adjusts the rotation speed of the paper feed lower roller 3222 to a corresponding value according to the difference between the longitudinal distance D' and the first preset longitudinal distance D1 when printing the next document;

[0112] If the longitudinal distance D' is greater than the second preset longitudinal distance D2, the interactive module 13 determines that the printing unit 3 is unqualified for the printing of the document and the reason for the unqualified printing is that the document conveying stability is unqualified. The interactive module corrects the rotation time of the lower paper feed roller 3222 when conveying the next document to a corresponding value. The interactive module records the corrected rotation time as t, and t satisfies t×W'∈[L1, L2], where L1 is the first critical standard and L2 is the second critical standard.

[0113] The present invention can effectively improve the stability of the lower roller 3222 of the paper feed when conveying documents by further determining the specific reason for the unqualified printing position based on the position of the printing pattern in the subsequently conveyed document and adjusting the rotation time of the lower roller 3222 of the paper feed to a corresponding value when the reason is determined to be the conveying stability. While further improving the printing accuracy of the device for automatic printing of electronic seals and logos according to the present invention for documents, it also further improves the printing efficiency of the device for automatic printing of electronic seals and logos according to the present invention for documents.

[0114] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing method based on a device for automatic printing of electronic seals and logos, the device for automatic printing of electronic seals and logos comprising: The device for automatically printing electronic seals and logos comprises a housing, a first scanner arranged at a paper inlet of the housing to scan documents to be printed, and a scanning and binding unit arranged at a paper outlet of the housing to bind documents that have been printed, and is characterized in that a printing unit is arranged in the housing, comprising: The printing support is used to carry the document to be printed; a first sensing sheet is provided on the lower surface of the printing support; A paper feeding mechanism, which is arranged on the stamping support and is used to feed the document to be stamped to a corresponding position on the stamping support; A printing mechanism, which is arranged on the seal support to perform inkjet transfer processing on the corresponding position of the surface of the document to be printed; the printing mechanism includes a loading plate hingedly arranged on the upper surface of the seal support and a plurality of inkjet stamping machines arranged in an array on the upper surface of the loading plate, each inkjet stamping machine is seamlessly spliced ​​and the angle between the connecting line of each inkjet stamping machine and the seal support is a preset angle, so as to perform inkjet printing on the corresponding position in the horizontal direction of the document to be printed by cooperating with inkjet, and each inkjet stamping machine cooperates with the paper feeding mechanism to perform inkjet printing on the corresponding position in the vertical direction of the document to be printed; A receiving mechanism is arranged at the bottom of the seal support, comprising a bottom plate arranged below the seal support and a receiving plate arranged above the bottom plate and movable in a direction parallel to the bottom plate, wherein a plurality of receiving platforms are arranged on the receiving plate, each receiving platform is respectively located below the corresponding inkjet stamping machine, and the receiving plate is used to enable each receiving platform to respectively seal the nozzle of each inkjet stamping machine when the printing unit is not running, and to respectively receive the ink sprayed by each inkjet stamping machine when the inkjet stamping machine is pre-spraying ink; the receiving plate is also provided with a plurality of limit holes; The printing support comprises: The ink pad is arranged on the upper surface of the ink support and is used to load the documents to be printed output by the first scanner; the ink pad is provided with a plurality of support columns, each of which is arranged at a corresponding position on the upper surface of the ink pad and is used to support the loading plate so that a gap of a preset size is left between the loading plate and the upper surface of the ink pad; the surface of the ink pad is provided with a plurality of receiving holes, each of which is located below the corresponding inkjet stamping machine; A traction plate, which is arranged on a side of the ink table close to the first scanner, and is used to constrain the document to be printed output by the first scanner; A plurality of telescopic columns, each of which sequentially passes through the ink pad, the ink support and the bottom plate, and is used to set the bottom plate at a corresponding position below the ink support; The ink pad is provided with a plurality of receiving holes, the positions of the receiving holes correspond to the positions of the nozzles of the inkjet stamping machines, so that the receiving pads can seal or receive the nozzles of the inkjet stamping machines; The undertaking institutions also include: A plurality of slide rails, each of which is arranged in parallel on the lower surface of the bottom plate; A plurality of sliders, each of which is sleeved on the corresponding slide rails and each of which is on the lower surface of the receiving plate, so as to cooperate with the slide rails to constrain the moving path of the receiving plate; A positioning plate, which is arranged below the ink pad and connected to the ink pad through a plurality of positioning posts, each positioning post respectively passes through the corresponding limiting hole to constrain the moving distance of the receiving plate relative to the bottom plate; A driving block, which is arranged on the lower surface of the receiving plate and has a threaded hole formed inside the lower surface of the driving block; A second motor is arranged below the bottom plate, and an output shaft of the second motor is connected to a horizontal stud, the axial direction of the horizontal stud is parallel to each of the slide rails and the horizontal stud cooperates with the threaded hole in the driving block to drive the driving block to drive the receiving plate to move horizontally in a corresponding direction; A threaded sleeve, which is vertically arranged on the bottom plate and passes through the bottom plate; A third motor is arranged below the positioning plate, wherein the output shaft of the third motor is connected with a vertical stud and the vertical stud cooperates with the threaded sleeve to drive the threaded sleeve to drive the bottom plate and the receiving plate to move vertically in corresponding directions; The undertaking institutions also include: A first sensor is disposed below the bottom plate and below the first sensing sheet, and is used to determine a vertical distance between the bottom plate and the ink pad according to the first sensing sheet; A second sensing sheet, which is arranged on a side wall of the driving block; A second sensor, which is arranged on the lower surface of the bottom plate and corresponds to the position of the second sensing sheet, and is used to determine the horizontal movement distance of the receiving plate relative to the bottom plate according to the second sensing sheet; For a single receiving platform, it includes: A plug, which is arranged on one side of the upper surface of the receiving platform and is used to pass through the corresponding receiving hole to seal the corresponding nozzle in the inkjet stamping machine; A receiving pad is arranged on the upper surface of the receiving platform and adjacent to the plug, and is used to receive the ink outputted by the corresponding inkjet stamping machine; A buffer spring, which is arranged inside the receiving platform and is used to buffer the sealing pressure of the plug on the nozzle; The printing method comprises: Step S1, before the printing unit prints the document to be printed, the third motor is started to rotate the vertical stud to drive the threaded sleeve to drive the receiving plate and the bottom plate to descend, and the plug descends to release the seal of each of the nozzles; Step S2, when the first sensor descends to below the first sensing sheet, the first sensing sheet is out of the sensing range of the first sensor, and at this time, the second motor is controlled to start, so that the horizontal stud drives the driving block to drive the receiving plate to move horizontally; Step S3, when the second sensing sheet leaves the sensing range of the second sensor, each inkjet stamping machine is controlled to pre-spray ink to spray ink onto each receiving pad, and when each inkjet stamping machine completes the pre-spray and the inkjet stamping machine sprays ink normally, the paper feeding mechanism is controlled to transport the document to be printed to the corresponding position on the stamping table so that the inkjet stamping machine can stamp at the corresponding position on the document to be printed; Step S4, when the printing unit is running, the paper feeding mechanism transports the document to be printed to the corresponding position on the upper surface of the printing support through the traction plate and controls the inkjet stamping group to start when the document to be printed is located at the corresponding position in the gap between the loading plate and the printing table to inkjet stamp on the upper surface of the document to be printed to complete the stamping of the document to be printed; Wherein, step S4 further comprises: when the printing unit completes the printing of the document, the interactive module delivers the document to the scanning and binding unit and controls the scanning and binding unit to collect image information of the document after printing, and the interactive module determines whether the printing of the document by the printing unit is qualified according to the longitudinal distance between the actual position of the printing pattern in the document in the image information and the expected position of the printing pattern in the document set in the interactive module: If the longitudinal distance is less than or equal to the first preset longitudinal distance set in the interaction module, the interaction module determines that the printing unit is qualified for the printing of the document and determines that the printing unit has completed the printing of the document, and the interaction module controls the printing unit to print the next document; If the longitudinal distance is greater than the first preset longitudinal distance and less than or equal to the second preset longitudinal distance set in the interactive module, the interactive module determines that the printing unit is unqualified for printing the document, determines that the printing unit has completed printing the document, controls the printing unit to print the next document, and adjusts the rotation speed of the paper feed lower roller in the paper feeding mechanism to a corresponding value according to the difference between the longitudinal distance and the first preset longitudinal distance when printing the next document; If the longitudinal distance is greater than the second preset longitudinal distance, the interactive module determines that the printing unit is unqualified for the printing of the document, determines that the printing unit has not completed the printing of the document, issues a reprint alarm, and adjusts the rotation speed of the lower paper feed roller to a corresponding value according to the difference between the longitudinal distance and the second preset longitudinal distance during reprinting; Step S5, when the inkjet stamping machine completes the stamping of the document to be stamped, the steps S1 to S3 are run in reverse to control the receiving mechanism to run the above process in reverse to perform sealing processing on each inkjet stamping machine.

2. The printing method based on the device for automatic printing of electronic seals and logos according to claim 1, characterized in that: The paper feeding mechanism comprises: A paper feed roller assembly is arranged on a side of the ink pad close to the first scanner, and is used to receive the document to be printed output by the first scanner and transport the document to be printed to a corresponding position on the ink pad. A paper discharge roller assembly, which is arranged on a side of the ink station away from the first scanner, and is used to receive the stamped document output by the paper feed roller assembly and output the document to the ink support; A first motor is arranged on a side wall of the printing support close to the paper feed driven wheel, and the output of the first motor is respectively connected to the paper feed driven wheel and the paper discharge driven wheel through a belt to drive the paper feed roller group and the paper discharge roller group to rotate synchronously; The paper feed roller assembly comprises an upper paper feed roller arranged on the upper surface of the ink pad and a lower paper feed roller arranged on the lower surface of the ink pad, and one end of the lower paper feed roller close to the upper paper feed roller passes through an input hole opened at a corresponding position of the ink pad to cooperate with the upper paper feed roller; a paper feed driven wheel is arranged at the end of the lower paper feed roller, and the first motor is connected to the paper feed driven wheel through a belt to drive the paper feed roller assembly to rotate; The paper discharge roller group includes an upper paper discharge roller arranged on the upper surface of the ink pad and a lower paper discharge roller arranged on the lower surface of the ink pad. One end of the lower paper discharge roller close to the upper paper discharge roller passes through an output hole opened at a corresponding position of the ink pad to cooperate with the upper paper discharge roller. A paper discharge driven wheel is provided at the end of the lower paper discharge roller, and the paper discharge driven wheel and the paper feed driven wheel are located on the same side. The first motor is connected to the paper discharge driven wheel through a belt to drive the paper discharge roller group to rotate.

3. The printing method based on the device for automatic printing of electronic seals and logos according to claim 2, characterized in that: The side wall of the printing bracket close to the first motor is also provided with a plurality of auxiliary driven wheels, and each auxiliary driven wheel is respectively arranged around the output shaft of the first motor; the output shaft of the first motor is connected to the paper feed driven wheel, the paper discharge driven wheel and each auxiliary driven wheel through a belt to drive the paper feed lower roller and the paper discharge lower roller to rotate.

Images