A front page printing and scanning all-in-one machine

Abstract

The application discloses a front page printing and scanning integrated machine, which comprises a positioning mechanism, a translation mechanism, a portal frame, a printing mechanism and a scanning mechanism. The positioning mechanism is used for positioning the printed page numbers and stacking the paper neatly, and comprises a bottom plate, side plates arranged around the bottom plate, a supporting plate located above the bottom plate, and a first lifting module used for driving the supporting plate to lift. The top of at least two side plates is provided with an upper limiting part used for limiting the upper edge of the paper. The translation mechanism is used for driving the positioning mechanism to translate along a straight line. The portal frame is arranged across the positioning mechanism. The printing mechanism is arranged on the portal frame and used for printing the front page paper. The scanning mechanism is used for scanning the printing content of the front page paper. The application can automatically adapt to the total height of the stacked paper of different types of archive files, ensure that the uppermost front page paper is always accurately limited on the preset printing work plane, avoid the work distance fluctuation between the uppermost front page paper and the printing head, and ensure the front page printing quality.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, specifically to a homepage printing and scanning all-in-one machine. Background Technology

[0002] The process of printing and binding archives requires multiple steps, including printing page numbers, aligning pages, printing the first page, scanning and archiving, punching holes and threading, on a batch of paper.

[0003] In the first page printing and scanning process, the paper with the page numbers already printed and neatly stacked is placed into the printing station of the first page printer. The print head prints the unit name, logo, number, and other information on the top cover or first page. Then, the scanner scans the printed content in real time for verification and archiving to ensure the accuracy and completeness of the first page information.

[0004] However, when printing different types of archival documents, the amount, thickness, and material of paper used often vary, resulting in inconsistent total stack heights. When a whole stack of paper is placed directly at the printing station, the working distance between the top sheet and the print head fluctuates significantly with changes in the total stack height.

[0005] When the total height of the stacked paper is low, the distance between the print head and the surface of the first page is too large, causing the printed content to be blurry, blurred, or misaligned. When the total height of the stacked paper is high, the distance between the print head and the surface of the first page is too small, which can easily cause the print head nozzles to scrape the paper, resulting in smudges or paper jams. In severe cases, it may even impact and damage the precision print head nozzles. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention provides a first page printing and scanning all-in-one machine that can automatically adapt to the total height of stacked paper for different types of documents, ensuring that the top first page is always precisely positioned on the preset printing working plane, avoiding fluctuations in the working distance between the top first page and the print head, and ensuring the quality of first page printing.

[0007] The technical solution adopted by this invention to solve its technical problem is: A multi-function printer / scanner for printing and scanning homepages includes: A positioning mechanism for positioning neatly stacked sheets of paper with printed page numbers includes a base plate, side plates arranged around the base plate, a support plate located above the base plate, and a first lifting module for driving the support plate to rise and fall. The support plate supports the stacked sheets of paper. The four side plates are respectively used to limit the perimeter of the sheets of paper. At least two of the side plates have upper limit stops at their tops for limiting the upper edge of the sheets of paper. At least one of the side plates has its top tilted outward to form a feeding guide. The first lifting module drives the support plate to rise so that the support plate and the upper limit stops abut against the lower and upper sides of the stack of sheets of paper, respectively. A translation mechanism is used to drive the positioning mechanism to translate along a straight line; A gantry frame is connected to both sides of the translation mechanism and spans across the positioning mechanism; A printing mechanism, mounted on the gantry and positioned above the positioning mechanism, is used to print the topmost first sheet of paper. A scanning mechanism, mounted on the gantry and located on one side of the printing mechanism, is used to scan the printed content of the first page.

[0008] As a further improvement to the above technical solution, the tops of the three side plates are all bent inward to form a first inner flange, the first inner flange constituting the upper limit part, and the top of the other side plate is tilted outward to form the feeding guide part.

[0009] As a further improvement to the above technical solution, the first lifting module includes four first lead screws, four first nuts, and a first driving assembly for driving the four first lead screws to rotate synchronously. The support plate extends outward to form four connecting ears, which are distributed in a rectangular array. The four first nuts are respectively fixedly connected to the four connecting ears, and the four first nuts are respectively threadedly connected to the four first lead screws.

[0010] As a further improvement to the above technical solution, the first drive assembly includes a first motor, a first drive wheel, a first belt, four first driven wheels, and a plurality of guide wheels. The first motor is mounted on the base plate, the first drive wheel is connected to the output end of the first motor, the four first driven wheels are respectively fixedly connected to the four first lead screws, the plurality of guide wheels are rotatably connected to the base plate, and the first belt is wound around the first drive wheel, the plurality of guide wheels, and the four driven wheels.

[0011] As a further improvement to the above technical solution, a movable plate is movably connected to the outer side of one of the side plates having the first inner flange, and a notch is opened at the top of the side plate. The top of the movable plate is bent inward to form a second inner flange, which is located within the notch. The movable plate has a vertically arranged waist-shaped hole, and a protruding post is provided on the outer side of the side plate. The protruding post is movably engaged with the waist-shaped hole. A slotted photoelectric sensor is also provided on the outer side of the side plate, and a photoelectric sensing sheet is provided on the movable plate, which corresponds to the slotted photoelectric sensor. When the support plate drives the entire stack of paper to rise, the top of the paper lifts the second inner flange so that the movable plate and the photoelectric sensing sheet rise synchronously until the second inner flange is flush with the first inner flange. The photoelectric sensing sheet disengages from the slotted photoelectric sensor, and the first lifting module stops operating.

[0012] As a further improvement to the above technical solution, an adjustment component is also provided at the bottom of the base plate. The adjustment component is used to drive three of the side plates to move synchronously towards the center or outward to position papers of different sizes.

[0013] As a further improvement to the above technical solution, the adjustment assembly includes a first bracket, a second motor, a drive gear, and a driven gear. The second motor is mounted on the first bracket, the drive gear is connected to the output shaft of the second motor, and the driven gear is rotatably connected to the bottom of the base plate. The driven gear has three arc-shaped guide grooves. The bottom ends of the three corresponding side plates are all fixedly connected to a horizontal plate. One end of the horizontal plate is rotatably connected to a follower wheel, which is rolled in the corresponding arc-shaped guide groove. A first linear guide rail is provided between the horizontal plate and the base plate.

[0014] As a further improvement to the above technical solution, the translation mechanism includes a mounting plate, a third motor, a second driving wheel, a second driven wheel, a second belt, and a connecting block. The third motor is mounted on the mounting plate, the second driving wheel is connected to the output end of the third motor, the second driven wheel is rotatably connected to the mounting plate, the second belt is wound around the second driving wheel and the second driven wheel, the connecting block is mounted on the bottom of the first bracket and fixedly connected to the second belt, and two parallel second linear guides are provided between the mounting plate and the base plate.

[0015] As a further improvement to the above technical solution, the printing mechanism includes a second bracket, a print head, and a second lifting module for driving the print head to rise and fall. The gantry frame has a clearance opening for avoiding the print head. The second lifting module includes a fourth motor, a second lead screw, and a second nut. The fourth motor is mounted on the second bracket, the second lead screw is connected to the output shaft of the fourth motor, the second nut is threadedly connected to the second lead screw, and the second nut is fixedly connected to the print head. A third linear guide rail is provided between the second bracket and the print head. Both the second lead screw and the third linear guide rail are vertically arranged.

[0016] As a further improvement to the above technical solution, the gantry is also provided with a moisturizing mechanism. The moisturizing mechanism includes a cylinder, a translation seat disposed at the telescopic end of the cylinder, and a moisturizing head disposed on the translation seat. A fourth linear guide rail is disposed between the translation seat and the gantry. The cylinder is used to drive the translation seat to move closer to or away from the print head, and the moisturizing head is used to moisturize the nozzles of the print head.

[0017] The beneficial effects of this invention are as follows: This invention provides a first-page printing and scanning all-in-one machine. By setting up a positioning mechanism, a translation mechanism, a gantry, a printing mechanism, and a scanning mechanism, a stack of papers is placed on a support plate. Four side plates limit the horizontal movement of the papers from all sides, ensuring that the papers are stacked neatly. Then, the first lifting module drives the support plate to rise, and the support plate lifts the stack of papers upward until the upper surface of the top first-page paper abuts against the upper limit part at the top of the side plate. At this time, the support plate supports the lower side of the stack of papers, and the upper limit part abuts against the upper side of the first-page paper, ensuring that the upper surface of the first-page paper is precisely defined on the preset printing working plane. Then, the translation mechanism drives the entire positioning mechanism and the stack of papers on it to move from the loading station to the printing station below the gantry, where the printing mechanism prints the first-page paper. At the same time, the translation mechanism continues to drive the entire positioning mechanism and the stack of papers on it to move from the printing station to the scanning station, where the scanning mechanism scans, proofreads, and archives the printed content in real time. When printing different types of documents, even if the total stacked height of the papers is inconsistent, it can ensure that the top sheet is always precisely positioned on the preset printing working plane, avoiding fluctuations in the working distance between the top sheet and the print head, and ensuring the printing quality of the first page. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of a homepage printing and scanning all-in-one machine provided in an embodiment of the present invention; Figure 2 yes Figure 1A schematic diagram of the positioning and translation mechanisms in the diagram; Figure 3 yes Figure 2 A schematic diagram of the translation mechanism in the diagram; Figure 4 yes Figure 2 A schematic diagram of the positioning mechanism in the diagram; Figure 5 yes Figure 4 A structural diagram from a second perspective; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 yes Figure 4 A structural diagram from a third-person perspective; Figure 8 yes Figure 7 A partial structural diagram; Figure 9 yes Figure 1 A schematic diagram of the printing mechanism and the moisturizing mechanism in the diagram.

[0020] Reference numerals: 100-Positioning mechanism, 110-Base plate, 120-Side plate, 121-First inner flange, 122-Feed guide, 123-Protruding column, 124-Horizontal plate, 125-Follower wheel, 126-First linear guide, 130-Support plate, 131-Connecting ear, 140-First lifting module, 141-First lead screw, 142-First nut, 143-First drive assembly, 1431-First motor 1432-First driving wheel, 1433-First belt, 1434-First driven wheel, 1435-Guide wheel, 150-Modible plate, 151-Second inner flange, 152-Oval hole, 161-Slotted photoelectric sensor, 162-Photoelectric sensor sheet, 170-Adjustment assembly, 171-First bracket, 172-Second motor, 173-Driving gear, 174-Driven gear, 1741-Arc-shaped guide groove; 200-Translation mechanism, 210-Mounting plate, 220-Third motor, 230-Second driving wheel, 240-Second driven wheel, 250-Second belt, 260-Connecting block, 270-Second linear guide rail; 300-Gantry; 400-Printing mechanism, 410-Second support, 420-Print head, 430-Second lifting module, 431-Fourth motor, 432-Second lead screw, 433-Second nut, 434-Third linear guide rail; 500 - Scanning mechanism; 600-Moisturizing mechanism, 610-Cylinder, 620-Transfer seat, 630-Moisturizing head, 640-Fourth linear guide. Detailed Implementation

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0022] Reference Figure 1 and Figure 2 The present invention provides a homepage printing and scanning all-in-one machine, including a positioning mechanism 100, a translation mechanism 200, a gantry 300, a printing mechanism 400, and a scanning mechanism 500.

[0023] Specifically, the positioning mechanism 100 is used to position the printed and neatly stacked papers, including a base plate 110, side plates 120 disposed around the base plate 110, a support plate 130 located above the base plate 110, and a first lifting module 140 for driving the support plate 130 to rise and fall. The support plate 130 is used to support the stacked papers, and the four side plates 120 are respectively used to limit the four sides of the papers. At least two side plates 120 have upper limit parts on their tops for limiting the upper edge of the papers, and at least one side plate 120 has its top tilted outward to form a feeding guide part 122. The first lifting module 140 drives the support plate 130 to rise so that the support plate 130 and the upper limit parts respectively abut against the lower and upper sides of the stack of papers.

[0024] The translation mechanism 200 is used to drive the positioning mechanism 100 to translate along a straight line.

[0025] The gantry 300 is connected to both sides of the translation mechanism 200 and spans across the positioning mechanism 100.

[0026] The printing mechanism 400 is mounted on the gantry 300 and located above the positioning mechanism 100, and is used to print the topmost first sheet of paper.

[0027] The scanning mechanism 500 is mounted on the gantry 300 and located on one side of the printing mechanism 400, and is used to scan the printed content of the first page.

[0028] During operation, the stack of paper with printed page numbers and neatly arranged is first placed onto the support plate 130 along the feed guide 122. The four side plates 120 horizontally limit the paper from all sides, ensuring that the paper is stacked neatly. Next, the first lifting module 140 drives the support plate 130 to rise, and the support plate 130 lifts the stack of paper upward until the upper surface of the top sheet of paper abuts against the upper limit stop at the top of the side plate 120. At this time, the support plate 130 supports the lower side of the stack of paper, and the upper limit stop abuts against the upper side of the top sheet of paper, so that the stack of paper is precisely limited in the vertical direction, ensuring that the upper surface of the top sheet of paper is precisely defined on the preset printing working plane. Then, the translation mechanism 200 drives the entire positioning mechanism 100 and the stack of paper on it to be translated from the loading station to the printing station below the gantry 300, and the printing mechanism 400 prints the top sheet of paper. Simultaneously, the translation mechanism 200 continues to drive the entire positioning mechanism 100 and the stack of papers on it from the printing station to the scanning station. The scanning mechanism 500 performs real-time scanning, verification, and archiving of the printed content. After scanning is completed, the translation mechanism 200 drives the entire positioning mechanism 100 and the stack of papers on it to the unloading station. The first lifting module 140 drives the lifting plate to descend, and the operator or the material handling robot removes the stack of papers that has completed the first page printing and scanning.

[0029] Therefore, when printing different types of archival documents, even if the total stacked height of the papers is inconsistent, it can ensure that the top first page is always precisely positioned on the preset printing working plane, avoiding fluctuations in the working distance between the top first page and the print head 420, and ensuring the printing quality of the first page.

[0030] In some preferred embodiments, the tops of the three side plates 120 are all bent inward to form a first inner flange 121, the first inner flange 121 constituting an upper limit portion, and the top of the other side plate 120 is tilted outward to form a feed guide portion 122.

[0031] Understandably, the upper limit section and the feeding guide section 122 are directly formed by bending the side plate 120, eliminating the need for additional independent limit blocks or guide parts. This reduces the number of parts and assembly steps, lowering manufacturing costs. Furthermore, it improves structural strength and resistance to deformation, ensuring that the upper limit section is not easily deformed when subjected to the upward force of the paper over a long period, thus ensuring stability when stacking paper at the upper and lower limits.

[0032] Reference Figure 4 and Figure 5In some preferred embodiments, the first lifting module 140 includes four first lead screws 141, four first nuts 142, and a first drive assembly 143 for driving the four first lead screws 141 to rotate synchronously. The support plate 130 extends outward to form four connecting ears 131, which are arranged in a rectangular array. The four first nuts 142 are fixedly connected to the four connecting ears 131 respectively, and the four first nuts 142 are threadedly connected to the four first lead screws 141 respectively.

[0033] Understandably, the first drive assembly 143 simultaneously drives the four first lead screws 141 to rotate at the same speed and direction, thereby driving the four first nuts 142 and the support plate 130 to rise and fall smoothly in the vertical direction. This ensures that the four corners of the support plate 130 are evenly stressed, avoiding tilting or jamming of the support plate 130 due to single-point drive, and ensuring that the entire stack of paper remains horizontal during the lifting process, further improving the first page printing quality. Moreover, the transmission between the first lead screws 141 and the first nuts 142 has a self-locking characteristic. When the first lifting module 140 stops driving, the support plate 130 can be stably maintained at the specified height, preventing it from automatically sliding down due to the weight of the paper, and ensuring the stability of the first page paper in the working position.

[0034] Specifically, the first drive assembly 143 includes a first motor 1431, a first drive wheel 1432, a first belt 1433, four first driven wheels 1434, and a plurality of guide wheels 1435. The first motor 1431 is mounted on the base plate 110. The first drive wheel 1432 is connected to the output end of the first motor 1431. The four first driven wheels 1434 are respectively fixedly connected to four first lead screws 141. The plurality of guide wheels 1435 are rotatably connected to the base plate 110. The first belt 1433 is wound around the first drive wheel 1432, the plurality of guide wheels 1435, and the four driven wheels.

[0035] Understandably, the first motor 1431 drives the first drive wheel 1432 to rotate. The first drive wheel 1432 transmits power synchronously to the four first driven wheels 1434 via the first belt 1433. Simultaneously, several guide wheels 1435 are used to adjust the direction of the first belt 1433 and increase its wrap angle, ensuring that the four first driven wheels 1434 rotate synchronously. This, in turn, drives the four first lead screws 141 to rotate synchronously, thus ensuring that the rotational speed and direction of the four first lead screws 141 remain consistent, guaranteeing that the support plate 130 remains horizontal during lifting and lowering. Furthermore, by using a single first motor 1431 to drive the four first lead screws 141 to rotate synchronously, the manufacturing cost of the equipment is reduced, resulting in a more compact overall structure.

[0036] Reference Figure 5 and Figure 6In some preferred embodiments, a movable plate 150 is movably connected to the outer side of one of the side plates 120 having a first inner flange 121, and a notch is formed at the top of the side plate 120. The top of the movable plate 150 is bent inward to form a second inner flange 151, which is located within the notch. The movable plate 150 has a vertically arranged waist-shaped hole 152. A protruding post 123 is provided on the outer side of the side plate 120, and the protruding post 123 is movably engaged with the waist-shaped hole 152. The outer side of the side plate 120 also has... A slotted photoelectric sensor 161 is provided, and a photoelectric sensor sheet 162 is provided on the movable plate 150. The photoelectric sensor sheet 162 corresponds to the slotted photoelectric sensor 161. When the support plate 130 drives the entire stack of paper to rise, the top of the paper lifts the second inner flange 151, so that the movable plate 150 and the photoelectric sensor sheet 162 rise synchronously until the second inner flange 151 is flush with the first inner flange 121. The photoelectric sensor sheet 162 disengages from the slotted photoelectric sensor 161, and the first lifting module 140 stops operating.

[0037] In the initial state, the movable plate 150 slides down naturally under the action of gravity until the second inner flange 151 is blocked by the bottom wall of the notch in the side plate 120. At this time, the photoelectric sensor 162 enters the slotted photoelectric sensor 161 and blocks the signal. When the support plate 130 drives the entire stack of papers to rise, the top edge of the first sheet of paper first contacts the bottom of the second inner flange 151 and lifts the second inner flange 151. At this time, the movable plate 150 rises vertically under the guidance of the waist-shaped hole 152 and the protrusion 123, while driving the photoelectric sensor 162 to rise. When the top surface of the first sheet rises to the preset working plane, the bottom of the first inner flange 121 is flush with the bottom of the first inner flange 121. At this time, the photoelectric sensor 162 completely disengages from the slotted photoelectric sensor 161, causing a change in the signal of the slotted photoelectric sensor 161. The control system of the equipment immediately controls the first lifting module 140 to stop, so that the top surface of the first sheet remains on the preset working plane. This enables automatic and precise leveling, avoiding lifting height errors caused by theoretical calculations and preset parameters of the first motor 1431. At the same time, it avoids excessive lifting that could cause the first inner flange 121 to over-press the paper, ensuring the flatness of the paper.

[0038] Furthermore, the outer periphery of the protrusion 123 may be provided with external threads and threadedly connected to two limiting nuts. The two limiting nuts are located on the front and back of the movable plate 150 respectively, so as to limit the movable plate 150 in the horizontal position and prevent the movable plate 150 from dislodging from the protrusion 123. At the same time, it can ensure that the photoelectric sensor 162 can accurately enter the slotted photoelectric sensor 161.

[0039] Reference Figure 7 and Figure 8In some preferred embodiments, the bottom of the base plate 110 is also provided with an adjustment component 170, which is used to drive three of the side plates 120 to move synchronously towards the center or outward to position papers of different sizes.

[0040] Understandably, when different sizes of paper need to be printed, the three side plates 120 can be driven to move synchronously towards the center or outward by adjusting the component 170. This changes the size of the rectangular space enclosed by the four side plates 120 to accommodate the length and width of the paper to be printed, thus meeting the first page printing and scanning requirements of different paper sizes, avoiding frequent tooling changes, improving changeover efficiency, and reducing the manufacturing cost of the equipment.

[0041] Specifically, the adjustment assembly 170 includes a first bracket 171, a second motor 172, a drive gear 173, and a driven gear 174. The second motor 172 is mounted on the first bracket 171. The drive gear 173 is connected to the output shaft of the second motor 172. The driven gear 174 is rotatably connected to the bottom of the base plate 110. The driven gear 174 has three arc-shaped guide grooves 1741. The bottom ends of the three corresponding side plates 120 are all fixedly connected to a horizontal plate 124. One end of the horizontal plate 124 is rotatably connected to a follower wheel 125. The follower wheel 125 is rolled in the corresponding arc-shaped guide groove 1741. A first linear guide rail 126 is provided between the horizontal plate 124 and the base plate 110.

[0042] Understandably, the second motor 172 drives the drive gear 173 to rotate, and the drive gear 173 drives the driven gear 174 to rotate. The three arc-shaped guide grooves 1741 make circular motion around the rotation center of the driven gear 174. As the radial distance of the arc-shaped guide grooves 1741 changes, the three follower wheels 125 are restricted to roll and move radially within the corresponding arc-shaped guide grooves 1741. In turn, they drive the three horizontal plates 124 and side plates 120 to synchronously move towards the center or outward along the first linear guide rail 126.

[0043] Therefore, by controlling the radial movement of the three side plates 120 simultaneously through a second motor 172, it is ensured that the positioning center of the paper and the rotation center of the driven gear 174 remain concentric during the adjustment process, ensuring that the printing position reference remains constant. Moreover, it avoids arranging multiple driving components to drive the three side plates 120 to translate separately, reducing the manufacturing cost of the equipment and making the structure compact.

[0044] Reference Figure 2 and Figure 3In some preferred embodiments, the translation mechanism 200 includes a mounting plate 210, a third motor 220, a second driving wheel 230, a second driven wheel 240, a second belt 250, and a connecting block 260. The third motor 220 is mounted on the mounting plate 210, the second driving wheel 230 is connected to the output end of the third motor 220, the second driven wheel 240 is rotatably connected to the mounting plate 210, the second belt 250 is wound around the second driving wheel 230 and the second driven wheel 240, the connecting block 260 is mounted on the bottom of the first bracket 171 and fixedly connected to the second belt 250, and two parallel second linear guide rails 270 are provided between the mounting plate 210 and the base plate 110.

[0045] Understandably, the third motor 220 drives the second drive wheel 230 to rotate, and the second drive wheel 230 drives the second driven wheel 240 to rotate through the second belt 250, causing the connecting block 260 fixed on the second belt 250 to perform linear reciprocating motion. Moreover, the connecting block 260 is installed at the bottom of the first bracket 171, thereby driving the entire positioning mechanism 100 and the stack of papers on it to move linearly along the second linear guide rail 270, so as to realize the switching between the loading and unloading station and the printing and scanning station.

[0046] Reference Figure 9 In some preferred embodiments, the printing mechanism 400 includes a second support 410, a print head 420, and a second lifting module 430 for driving the print head 420 to rise and fall. A clearance opening is provided on the gantry 300 to allow the print head 420 to pass. Specifically, the second lifting module 430 includes a fourth motor 431, a second lead screw 432, and a second nut 433. The fourth motor 431 is mounted on the second support 410, the second lead screw 432 is connected to the output shaft of the fourth motor 431, the second nut 433 is threadedly connected to the second lead screw 432, and the second nut 433 is fixedly connected to the print head 420. A third linear guide rail 434 is provided between the second support 410 and the print head 420, and both the second lead screw 432 and the third linear guide rail 434 are vertically arranged.

[0047] Understandably, by driving the second lead screw 432 to rotate via the fourth motor 431, the second nut 433 and the print head 420 are moved up and down along the third linear guide rail 434. This allows for precise control of the distance between the print head 420 and the top surface of the first page, ensuring accurate ink placement and improving print quality. Furthermore, when replacing ink cartridges or performing routine cleaning or maintenance on the print head 420, the second lifting module 430 can be used to raise the print head 420 to a higher position, providing more operating space and improving maintenance convenience.

[0048] In some preferred embodiments, a moisturizing mechanism 600 is also provided on the gantry 300. The moisturizing mechanism 600 includes a cylinder 610, a translation seat 620 provided at the telescopic end of the cylinder 610, and a moisturizing head 630 provided on the translation seat 620. A fourth linear guide rail 640 is provided between the translation seat 620 and the gantry 300. The cylinder 610 is used to drive the translation seat 620 to move closer to or away from the print head 420, and the moisturizing head 630 is used to moisturize the nozzles of the print head 420.

[0049] Understandably, after printing is complete, the second lifting module 430 drives the print head 420 to rise to a high position; then, the cylinder 610 drives the translation seat 620 to move along the fourth linear guide 640, moving the moisturizing head 630 to directly below the print head 420; then, the second lifting module 430 drives the print head 420 to descend, so that the nozzles of the print head 420 are in close contact with the moisturizing head 630. This prevents the ink inside the print head 420 from drying and clogging the nozzles, reduces the frequency of subsequent maintenance of the print head 420, and slows down the aging and corrosion of the nozzles of the print head 420, thus extending the service life of the print head 420.

[0050] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A multi-functional printer / scanner for printing and scanning first pages, characterized in that, include: A positioning mechanism for positioning neatly stacked sheets of paper with printed page numbers includes a base plate, side plates arranged around the base plate, a support plate located above the base plate, and a first lifting module for driving the support plate to rise and fall. The support plate supports the stacked sheets of paper. The four side plates are respectively used to limit the perimeter of the sheets of paper. At least two of the side plates have upper limit stops at their tops for limiting the upper edge of the sheets of paper. At least one of the side plates has its top tilted outward to form a feeding guide. The first lifting module drives the support plate to rise so that the support plate and the upper limit stops abut against the lower and upper sides of the stack of sheets of paper, respectively. A translation mechanism is used to drive the positioning mechanism to translate along a straight line; A gantry frame is connected to both sides of the translation mechanism and spans across the positioning mechanism; A printing mechanism, mounted on the gantry and positioned above the positioning mechanism, is used to print the topmost first sheet of paper. A scanning mechanism, mounted on the gantry and located on one side of the printing mechanism, is used to scan the printed content of the first page.

2. The all-in-one printer / scanner according to claim 1, characterized in that, The tops of three of the side plates are bent inward to form a first inner flange, which constitutes the upper limit portion. The top of the other side plate is tilted outward to form the feed guide portion.

3. The all-in-one printer / scanner according to claim 1, characterized in that, The first lifting module includes four first lead screws, four first nuts, and a first drive assembly for driving the four first lead screws to rotate synchronously. The support plate extends outward to form four connecting ears, which are distributed in a rectangular array. The four first nuts are fixedly connected to the four connecting ears respectively, and the four first nuts are threadedly connected to the four first lead screws respectively.

4. A homepage printing and scanning all-in-one machine according to claim 3, characterized in that, The first drive assembly includes a first motor, a first drive wheel, a first belt, four first driven wheels, and a plurality of guide wheels. The first motor is mounted on the base plate, the first drive wheel is connected to the output end of the first motor, the four first driven wheels are respectively fixedly connected to the four first lead screws, the plurality of guide wheels are rotatably connected to the base plate, and the first belt is wound around the first drive wheel, the plurality of guide wheels, and the four driven wheels.

5. A homepage printing and scanning all-in-one machine according to claim 2, characterized in that, One of the side plates with the first inner flange is movably connected to a movable plate on its outer side, and the top of the side plate has a notch. The top of the movable plate is bent inward to form a second inner flange, which is located within the notch. The movable plate has a vertically arranged waist-shaped hole. A protruding post is provided on the outer side of the side plate, and the protruding post is movably engaged with the waist-shaped hole. A slotted photoelectric sensor is also provided on the outer side of the side plate. A photoelectric sensor sheet is provided on the movable plate, and the photoelectric sensor sheet corresponds to the slotted photoelectric sensor. When the support plate lifts the entire stack of paper, the top of the paper lifts the second inner flange so that the movable plate and the photoelectric sensor sheet rise synchronously until the second inner flange is flush with the first inner flange. The photoelectric sensor sheet disengages from the slotted photoelectric sensor, and the first lifting module stops operating.

6. A homepage printing and scanning all-in-one machine according to claim 1, characterized in that, The bottom of the base plate is also provided with an adjustment component, which is used to drive three of the side plates to move synchronously towards the center or outward to position papers of different sizes.

7. A homepage printing and scanning all-in-one machine according to claim 6, characterized in that, The adjustment assembly includes a first bracket, a second motor, a drive gear, and a driven gear. The second motor is mounted on the first bracket. The drive gear is connected to the output shaft of the second motor. The driven gear is rotatably connected to the bottom of the base plate. The driven gear has three arc-shaped guide grooves. A horizontal plate is fixedly connected to the bottom end of each of the three corresponding side plates. A follower wheel is rotatably connected to one end of each horizontal plate. The follower wheel is rolled in the corresponding arc-shaped guide groove. A first linear guide rail is provided between the horizontal plate and the base plate.

8. A homepage printing and scanning all-in-one machine according to claim 1, characterized in that, The translation mechanism includes a mounting plate, a third motor, a second driving wheel, a second driven wheel, a second belt, and a connecting block. The third motor is mounted on the mounting plate. The second driving wheel is connected to the output end of the third motor. The second driven wheel is rotatably connected to the mounting plate. The second belt is wound around the second driving wheel and the second driven wheel. The connecting block is mounted on the bottom of the first bracket and fixedly connected to the second belt. Two parallel second linear guides are provided between the mounting plate and the base plate.

9. A homepage printing and scanning all-in-one machine according to claim 1, characterized in that, The printing mechanism includes a second bracket, a print head, and a second lifting module for driving the print head to rise and fall. The gantry frame has a clearance opening for avoiding the print head. The second lifting module includes a fourth motor, a second lead screw, and a second nut. The fourth motor is mounted on the second bracket, the second lead screw is connected to the output shaft of the fourth motor, and the second nut is threadedly connected to the second lead screw. The second nut is fixedly connected to the print head. A third linear guide rail is provided between the second bracket and the print head. Both the second lead screw and the third linear guide rail are vertically arranged.

10. A homepage printing and scanning all-in-one machine according to claim 9, characterized in that, The gantry is also equipped with a humidification mechanism, which includes a cylinder, a translation seat located at the telescopic end of the cylinder, and a humidification head located on the translation seat. A fourth linear guide rail is provided between the translation seat and the gantry. The cylinder is used to drive the translation seat to move closer to or away from the print head, and the humidification head is used to humidify the nozzles of the print head.

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