Code spraying colored drawing machine and working method thereof

Abstract

The invention relates to the technical field of printing equipment, and provides a code spraying colored drawing machine which comprises a rack, a lifting positioning mechanism, a book clamping rotating mechanism and a spraying mechanism. The book clamping rotating mechanism comprises a mounting frame, a driving clamping block, a driven clamping block, a first driving assembly and a second driving assembly. The lifting positioning mechanism is located below the mounting frame, the driving clamping block and the driven clamping block are symmetrically arranged on the inner side of the mounting frame to form a clamping space, and the space corresponds to a lifting platform of the lifting positioning mechanism. The first driving assembly drives the driving clamping block to move through the air cylinder, the force arm connecting rod and the movable chain so as to clamp a book. The second driving assembly drives the driving clamping block and the driven clamping block to rotate synchronously through the motor and the rotating shaft, and therefore the clamped book is driven to rotate integrally. And the painting mechanism is arranged above the book clamping and rotating mechanism for painting. Automatic rotation and continuous painting of a book under stable clamping are achieved, the problems of positioning dislocation and discontinuous connection during painting of patterns on multiple side faces of a book opening are solved, and painting precision is improved.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and in particular to an inkjet printer and its working method. Background Technology

[0002] With the rapid development of the high-end publishing and personalized customization market, consumers have placed higher demands on the aesthetic value and uniqueness of book appearance. Among these demands, patterned color painting or coded printing on the book edges—the three cut sides of the book excluding the spine—has become an important technique for enhancing the collectible value and visual recognizability of books. The market urgently needs an automated device capable of efficiently and precisely printing continuous patterns on the three sides of the book edge, especially one that allows for seamless transitions, edge alignment, and color consistency across all three sides, creating a wraparound visual effect to meet the industrial production needs of high-end books, limited-edition art books, and other similar products.

[0003] However, existing book-edge printing equipment has two major shortcomings in its design, making it difficult to meet the actual needs of continuous, high-precision printing on the three sides of the book edge.

[0004] Firstly, existing equipment lacks the capability for continuous printing without requiring repositioning and reassembly. For example, Chinese patent CN208558653U discloses a book edge printing device that uses partitions and guide plates to separate books and employs positioning frames, clamping plates, and adjusting bolts to accurately position and clamp the books for printing on a single side. While such equipment can handle batch processing, when dealing with continuous decoration on three sides, operators must manually remove the books from the fixtures, rotate them, reposition them, and re-clamp them. This process not only leads to frequent production interruptions and significantly reduces efficiency, but more importantly, the manual intervention disrupts the continuity of the printing reference, becoming the root cause of subsequent positioning deviations.

[0005] Secondly, when manually disassembling and repositioning, it is impossible to replicate the precise position of the initial print, inevitably resulting in secondary positioning errors. This causes obvious misalignment, breaks, or uneven shades at the side joints of the pattern, completely ruining the visual effect of continuous printing.

[0006] Therefore, the existing technology lacks a dedicated device that integrates high-precision center positioning, stable clamping, controllable rotation and dynamic inkjet printing, making it difficult to simultaneously meet the comprehensive requirements of pattern continuity, alignment accuracy and production efficiency on the three sides of the book edge. Summary of the Invention

[0007] The purpose of this invention is to provide a coding and color printing machine and its working method, aiming to solve the technical problem that existing coding machines cannot achieve fully automatic, high-precision, and continuous pattern printing at the book edge.

[0008] In one aspect, this application provides a coding and color printing machine, including a frame, a lifting and positioning mechanism, a book clamping and rotating mechanism, and a printing mechanism; The book clamping and rotating mechanism includes a mounting frame, an active clamping block, a driven clamping block, a first drive assembly, and a second drive assembly. The lifting and positioning mechanism is movably disposed in the middle of the frame and located below the mounting frame. The active clamping block and the driven clamping block are symmetrically mounted on the two inner sides of the mounting frame. The clamping space formed between the active clamping block and the driven clamping block corresponds to the lifting platform of the lifting and positioning mechanism. The first drive assembly includes a lever arm connecting rod, a cylinder, and a movable chain. The cylinder is mounted on the mounting frame. One end of the lever arm connecting rod is connected to the output end of the cylinder. The other end of the lever arm connecting rod is movably connected to one end of the movable chain. The input end of the active clamping block is movably connected to the other end of the movable chain. The second drive assembly includes a first motor and a rotating shaft connected to the output end of the first motor. Both the active clamping block and the driven clamping block are drively connected to the rotating shaft. The printing mechanism is located above the book-clamping and rotating mechanism and is used to print on the books held by the book-clamping and rotating mechanism.

[0009] Optionally, the lever arm linkage includes an integrally formed transverse lever arm and a longitudinal lever arm, the longitudinal lever arm being hinged to the output end of the cylinder, the transverse lever arm being movably connected to one end of the movable chain, and the connection between the transverse lever arm and the longitudinal lever arm being hinged to the frame.

[0010] Optionally, the transverse lever arm and the longitudinal lever arm form an angle α, where the angle α is 60-100°.

[0011] Optionally, one active clamping block and one driven clamping block correspond to form a clamping unit, and a total of six clamping units are provided; There are two lifting and positioning mechanisms, which are installed horizontally side by side in the middle of the frame; The six clamping units are arranged in groups of three, and are respectively set above the two lifting and positioning mechanisms, that is, there are three clamping units above each lifting and positioning mechanism.

[0012] Optionally, the lifting and positioning mechanism includes a lifting platform, a second motor, a drive sprocket, multiple driven sprockets, four lead screws, and a transmission chain; The second motor is fixedly mounted on the frame, and the output end of the second motor is fixedly connected to the drive sprocket. Four lead screws are arranged in a rectangle at the four corners of the lifting platform. Each lead screw has a driven sprocket fixedly fitted at its lower end and is rotatably connected to the connecting seat on the lower surface of the lifting platform through a ball bearing at its upper end. The transmission chain is sequentially wound around the driving sprocket and multiple driven sprockets to form a closed transmission chain; The second motor drives the active sprocket to rotate, which in turn drives multiple driven sprockets to rotate synchronously via the transmission chain, thereby driving the four lead screws to rotate synchronously, thus realizing the lifting movement of the lifting platform.

[0013] Optionally, the lifting and positioning mechanism also includes three adjusting rods. The three adjusting rods extend along the thickness direction of the stacked books. The adjusting rods are adjustablely positioned above the lifting platform. The three adjusting rods correspond one-to-one with three sets of clamping units. Each adjusting rod is attached to one side of the stacked books. The adjusting rods, together with the driven clamping block and the lifting platform, achieve the positioning of the books.

[0014] Optionally, the lower part of the lifting platform is provided with horizontally extending slide rails on both sides near the two mounting brackets; each slide rail is provided with a slider, and two sliders are fixedly connected to a vertically set connecting plate; three adjusting rods are fixedly connected to the connecting plate, so that the adjusting rods are higher than the upper surface of the lifting platform and can move horizontally above the lifting platform along the slide rail with the connecting plate.

[0015] Optionally, the lifting and positioning mechanism also includes a third motor, an adjusting screw, a hard chrome rod, and a synchronous transmission assembly, all horizontally arranged below the lifting platform; The synchronous transmission assembly includes a driving wheel, a driven wheel, and a synchronous belt. The driving wheel is fixedly connected to the output end of the third motor, and the two driven wheels are respectively fixedly sleeved on the same end of two adjusting screws. Two adjusting screws are symmetrically distributed between two hard chrome rods; The third motor drives the two adjusting screws to rotate synchronously through the synchronous transmission assembly, which in turn drives the connecting plate to slide smoothly along the hard chrome rod, thereby driving the three adjusting rods to move horizontally synchronously.

[0016] Optionally, the printing mechanism includes an X-axis guide rail, a Y-axis slide, a Z-axis lifting rod, and a printhead; The Y-axis slide is slidably mounted on the X-axis guide rail; The Z-axis lifting rod is mounted on the Y-axis slide. The nozzle is installed at the lower end of the Z-axis lifting rod.

[0017] Secondly, this application provides a method for operating a coding printer, including the following steps: S1: Drive the two lifting and positioning mechanisms to adjust their positions and place the six stacks of books on the lifting platform so that the center of each stack of books coincides with the center of the rotation axis of the active clamping block and the driven clamping block; S2: Controls the book-clamping rotation mechanism to drive the active clamping block to clamp the book; S3: Controls the movement of the printing mechanism to print on the first side of the book; S4: The lifting and positioning mechanism descends, and the second drive component controlling the book clamping and rotating mechanism drives the book to rotate 90°, so that the second side of the book faces upward; S5: The printing machine prints on the second side; S6: Repeat the 90° rotation to complete the printing on the third side; S7: The lifting and positioning mechanism rises and resets, the active clamping block and the driven clamping block are released, and the book is taken out.

[0018] The beneficial effects of this invention are as follows: by coordinating the book clamping and rotating mechanism with the lifting and positioning mechanism and the inkjet printing mechanism, active clamping blocks and driven clamping blocks are symmetrically arranged on both sides of the mounting frame to form a clamping space corresponding to the lifting platform; the active clamping block is smoothly driven by the first driving component to achieve stable book clamping; at the same time, the active clamping block and the driven clamping block are driven to rotate synchronously by the second driving component, so that the book can be rotated as a whole without disassembly in a stable clamping state.

[0019] It avoids production process interruptions caused by manual flipping and repositioning, greatly improving production efficiency; it also ensures that the book always maintains the initial printing reference, completely eliminating problems such as printing reference breakage and secondary positioning errors caused by manual intervention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the inkjet printer provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the lifting and positioning mechanism provided in an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the inkjet printer provided in an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 This is a schematic diagram of the lever arm connecting rod provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second driving component provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the inkjet printing mechanism of the inkjet printer provided in an embodiment of the present invention.

[0022] The following are the labeling elements in the figure: 1. Rack; 2. Lifting and positioning mechanism; 201. Lifting platform; 202. Second motor; 203. Drive sprocket; 204. Driven sprocket; 205. Lead screw; 206. Drive chain; 207. Adjusting rod; 208. Slide rail; 209. Connecting plate; 210. Third motor; 211. Adjusting screw; 212. Hard chrome rod; 213. Synchronous transmission assembly; 3. Book clamping and rotating mechanism; 300. Clamping space; 301. Clamping unit; 31. Mounting bracket; 32. Active clamping block; 33. Driven clamping block; 34. First driving component; 341. Lever arm link; 341a. Lateral lever arm; 341b. Longitudinal lever arm; 342. Cylinder; 343. Moving chain; 35. Second drive assembly; 351. First motor; 352. Rotating shaft; 4. Printing equipment; 41. X-axis guide rail; 42. Y-axis slide table; 43. Z-axis lifting rod; 44. Nozzle. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] Throughout this specification, references to "one embodiment" or "embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in another embodiment of this application," "in one embodiment," or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0025] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Please refer to Figure 1-7 The inkjet printer and its working method in the embodiments of the present invention will now be described.

[0030] Please refer to Figure 1-6 This application provides a coding and color printing machine and its working method, including a frame 1, a lifting and positioning mechanism 2, a book clamping and rotating mechanism 3 and a printing mechanism 4; The book clamping and rotating mechanism 3 includes a mounting frame 31, an active clamping block 32, a driven clamping block 33, a first drive assembly 34, and a second drive assembly 35. The lifting and positioning mechanism 2 is movably disposed in the middle of the frame 1 and located below the mounting frame 31. The active clamping block 32 and the driven clamping block 33 are symmetrically mounted on the two inner sides of the mounting frame 31. The clamping space 300 formed between the active clamping block 32 and the driven clamping block 33 corresponds to the lifting platform 201 of the lifting and positioning mechanism 2. The first drive assembly 34 includes a lever arm. The assembly includes a connecting rod 341, a cylinder 342, and a movable chain 343. The cylinder 342 is mounted on the mounting bracket 31. One end of the lever arm connecting rod 341 is connected to the output end of the cylinder 342, and the other end of the lever arm connecting rod 341 is movably connected to one end of the movable chain 343. The input end of the active clamping block 32 is movably connected to the other end of the movable chain 343. The second drive assembly 35 includes a first motor 351 and a rotating shaft 352 connected to the output end of the first motor 351. Both the active clamping block 32 and the driven clamping block 33 are drively connected to the rotating shaft 352. The printing mechanism 4 is movably positioned above the book clamping and rotating mechanism 3, and is used to print on the books held by the book clamping and rotating mechanism 3.

[0031] Specifically, the frame 1 is a frame-type steel structure. The lifting and positioning mechanism 2 is movably installed in the middle of the frame 1. The lifting and positioning mechanism 2 first adjusts the height of the book to align the center of the book with the center of the subsequent clamping mechanism, thus completing the center positioning. The book clamping and rotating mechanism 3 is located above the lifting and positioning mechanism 2. The active clamping block 32 and the driven clamping block 33 on the inner side of its two opposing mounting brackets 31 correspond to each other. The active clamping block 32 is driven to move horizontally by the first drive component 34, cooperating with the driven clamping block 33 to achieve precise clamping of the book. After clamping, the second drive component 35 drives the active clamping block 32 and the driven clamping block 33 to rotate synchronously, causing the book to rotate. The printing mechanism 4 can move in three dimensions to align with different sides of the rotated book and complete the printing operation. All mechanisms work together to achieve integrated operation of book positioning, clamping, rotation, and printing.

[0032] The first drive assembly 34 smoothly converts the axial power of the cylinder 342 into the horizontal clamping force of the active clamping block 32 through the lever transmission principle. The clamping process is smooth, the force is uniform and controllable, and the book is prevented from being deformed or shifted. The second drive component 35 enables the active clamping block 32 and the driven clamping block 33 to rotate synchronously and at the same speed, ensuring that the book's posture is stable during rotation, and that the center always coincides with the rotation axis, without any slippage or twisting, thus completely solving the problems of misalignment and breakage of cross-surface inkjet printing patterns; the design of the rotating shaft 352 enables the synchronous drive of multiple sets of clamping blocks, simplifies the structure, reduces energy consumption, and adapts to the batch printing needs of multiple clamping units 301.

[0033] Once the book is positioned, no manual intervention is required. The continuous printing on the three sides of the book opening is completed solely through the equipment's own linkage, completely eliminating secondary positioning errors caused by manual flipping. The book clamping and rotating mechanism 3 and the lifting and positioning mechanism 2 work precisely together to ensure that the book is firmly clamped and that the center of gravity does not shift during rotation. This results in seamless connection of patterns across different surfaces, edge alignment, and consistent colors, creating a wraparound visual effect. The integrated architecture improves production efficiency and is suitable for the industrial production needs of high-end books, limited edition albums, and other products.

[0034] The inkjet printer of this application is not only suitable for multi-sided inkjet printing on book edges, but also adaptable to various thin workpieces with flat sides and stackable shapes, such as notebooks, folders, thin packaging boxes, brochures, hardcover manuals, etc. Through the stable clamping and synchronous rotation of the book clamping and rotating mechanism 3, and in conjunction with the inkjet printing mechanism 4, it completes precise multi-sided inkjet printing, adapting to diversified printing and processing needs.

[0035] In another embodiment of this application, please refer to Figure 5 The lever arm linkage 341 includes an integrally formed transverse lever arm 341a and a longitudinal lever arm 341b. The longitudinal lever arm 341b is hinged to the output end of the cylinder 342. The transverse lever arm 341a is movably connected to one end of the movable chain 343. The connection between the transverse lever arm 341a and the longitudinal lever arm 341b is hinged to the frame 1.

[0036] Specifically, the lever arm linkage 341 can be a figure-7 structure design. The figure-7 structure is compact, saves installation space, and adapts to the overall layout of the equipment. The hinged connection reduces wear and tear, improves the stability and service life of the drive components, and further ensures the accuracy of book clamping and positioning, laying the foundation for subsequent printing accuracy.

[0037] In another embodiment of this application, please refer to Figure 5 The transverse lever arm 341a and the longitudinal lever arm 341b form an angle α, which is 60-100°.

[0038] Specifically, the 60-100° included angle range optimizes the lever arm ratio and motion trajectory, ensuring that the power of cylinder 342 is efficiently converted into horizontal clamping force, avoiding dead spots or interference. A balance is achieved between structural compactness, power transmission, and motion reliability, resulting in fast and stable clamping action.

[0039] In another embodiment of this application, please refer to Figure 1-3 An active clamping block 32 and a driven clamping block 33 correspond to form a clamping unit 301, and a total of six clamping units 301 are provided; There are two lifting and positioning mechanisms 2, which are installed side by side horizontally in the middle of the frame 1. The six clamping units 301 are arranged in groups of three, and are respectively set above the two lifting and positioning mechanisms 2, that is, there are three clamping units 301 above each lifting and positioning mechanism 2.

[0040] Specifically, the two lifting and positioning mechanisms 2 can work independently or synchronously, each carrying three stacks of books; six stacks of books can be processed simultaneously at one time, greatly improving production efficiency and meeting the needs of high-end book industrial mass production; the two lifting and positioning mechanisms 2 are arranged in correspondence with six sets of clamping units 301, so that the equipment load is even and the operation is more stable; each set of lifting and positioning mechanisms 2 corresponds to three sets of clamping units 301, ensuring that the positioning accuracy of each stack of books is consistent and the printing quality is uniform; the printing mechanism 4 covers all workstations for batch processing.

[0041] In another embodiment of this application, please refer to Figure 2 The lifting and positioning mechanism 2 includes a lifting platform 201, a second motor 202, a drive sprocket 203, multiple driven sprockets 204, four lead screws 205 and a transmission chain 206; The second motor 202 is fixedly mounted on the frame 1, and the output end of the second motor 202 is fixedly connected to the drive sprocket 203. Four lead screws 205 are arranged in a rectangle at the four corners of the lifting platform 201. Each lead screw 205 has a driven sprocket 204 fixedly sleeved at its lower end, and its upper end is rotatably connected to the connecting seat on the lower surface of the lifting platform 201 through a ball bearing. The transmission chain 206 is sequentially wound around the driving sprocket 203 and multiple driven sprockets 204 to form a closed transmission chain; The second motor 202 drives the drive sprocket 203 to rotate, which in turn drives multiple driven sprockets 204 to rotate synchronously via the transmission chain 206, thereby driving four lead screws 205 to rotate synchronously, thus realizing the lifting movement of the lifting platform 201.

[0042] Specifically, the four lead screws 205 are arranged in a rectangular shape, and with the synchronous transmission of the sprocket and chain, the lifting platform 201 can be raised and lowered smoothly and synchronously without tilting or jamming, and with high lifting accuracy. The ball bearings reduce the wear between the lead screws 205 and the connecting seats, improving the operational stability and service life of the lifting mechanism. Through the closed chain transmission, it is ensured that all lead screws 205 rotate at the same speed, and the lifting platform 201 is subjected to uniform force, further improving the accuracy of book height adjustment, so that the center of the book is perfectly aligned with the center of the clamping unit 301, ensuring the accuracy of subsequent clamping and printing.

[0043] In another embodiment of this application, please refer to Figure 2 , 3The lifting and positioning mechanism 2 also includes three adjusting rods 207. The three adjusting rods 207 extend along the thickness direction of the stacked books. The adjusting rods 207 are adjustablely positioned above the lifting platform 201. The three adjusting rods 207 correspond one-to-one with the three sets of clamping units 301. Each adjusting rod 207 is attached to one side of the corresponding stack of books. The adjusting rods 207, together with the driven clamping block 33 and the lifting platform 201, realize the positioning of the books.

[0044] Specifically, the three adjusting rods 207 correspond to three stacks of books, and each corresponds to one of the three active clamping blocks 32. Each adjusting rod 207 precisely fits one side of the corresponding stack of books, assisting each stack of books in achieving horizontal center positioning, correcting the skewing and misalignment of the stacks, and ensuring that the center of each stack of books is perfectly aligned with the center of the corresponding clamping unit 301. The adjusting rods 207 extend along the thickness of the books to accommodate books of different stacking heights, improving the versatility and accuracy of positioning. This further ensures the stability of subsequent clamping and the continuity of printing, avoiding pattern misalignment caused by book positioning deviation.

[0045] In another embodiment of this application, please refer to Figure 2 , 3 The lifting platform 201 has horizontally extending slide rails 208 on both sides near the two mounting brackets 31 at the bottom. Each slide rail 208 is equipped with a slider, and each slider is fixedly connected to a vertically set connecting plate 209. Three adjusting rods 207 are fixedly connected to the connecting plate 209, so that the adjusting rods 207 are higher than the upper surface of the lifting platform 201 and can move horizontally above the lifting platform 201 along the slide rails 208 with the connecting plate 209.

[0046] Specifically, the adjusting rod 207 can move horizontally along the slide rail 208 with the connecting plate 209. The three adjusting rods 207 are adjusted synchronously, and the spacing is adapted to the width of the three stacks of books. Each adjusting rod 207 is always in contact with one side of the corresponding stack of books, flexibly adapting to stacks of books of different thicknesses and greatly improving the versatility of the equipment. The cooperation between the slide rail 208 and the slider makes the adjusting rod 207 move smoothly and steadily without jamming or deviation, ensuring that the positioning accuracy of each stack of books is not affected during the adjustment process. The adjusting rod 207 is higher than the lifting platform 201 to avoid interference with the lifting platform 201, and at the same time, it can better fit the side of the book, resulting in better auxiliary positioning effect.

[0047] In another embodiment of this application, please refer to Figure 2 The lifting and positioning mechanism 2 also includes a third motor 210, an adjusting screw 211, a hard chrome rod 212 and a synchronous transmission assembly 213, all horizontally arranged below the lifting platform 201. The synchronous transmission assembly 213 includes a driving wheel, a driven wheel, and a transmission synchronous belt. The driving wheel is fixedly connected to the output end of the third motor 210, and the two driven wheels are respectively fixedly sleeved on the same end of the two adjusting screws 211. Two adjusting screws 211 are symmetrically distributed between two hard chrome rods 212; The third motor 210 drives the two adjusting screws 211 to rotate synchronously through the synchronous transmission assembly 213, which drives the connecting plate 209 to slide smoothly along the hard chrome rod 212, thereby driving the three adjusting rods 207 to move horizontally synchronously.

[0048] Specifically, the system achieves fully automatic synchronous movement of the three adjusting rods 207 without manual intervention. The three adjusting rods 207 synchronously adjust their spacing to accommodate three stacks of books, with each adjusting rod 207 always in contact with one side of the corresponding stack of books, significantly improving adjustment efficiency and accuracy. The synchronous transmission component 213 ensures that the two adjusting screws 211 rotate at the same speed, allowing the connecting plate 209 to slide smoothly along the hard chrome rod 212. The synchronous movement and uniform spacing of the adjusting rods 207 ensure accurate positioning of each stack of books. The hard chrome rod 212 acts as a guide, reducing wear on the sliding of the connecting plate 209 and improving the stability and service life of the adjustment mechanism. The automated adjustment adapts to the rapid switching of different book sizes, further improving the automation level and production efficiency of the equipment.

[0049] In another embodiment of this application, please refer to Figure 1 , 7 The inkjet printing mechanism 4 includes an X-axis guide rail 41, a Y-axis slide 42, a Z-axis lifting rod 43, and a printhead 44; The Y-axis slide 42 is slidably mounted on the X-axis guide rail 41; Z-axis lifting rod 43 is mounted on Y-axis slide table 42; The nozzle 44 is installed at the lower end of the Z-axis lifting rod 43.

[0050] Specifically, the X-axis guide rail 41 is mounted on the frame 1 and driven by a servo motor to move horizontally to cover the spraying area of ​​the book. The Y-axis slide table 42 is equipped with a slide rail 208, a slider, and a drag chain, which allows the Z-axis lifting rod 43 to drive the printhead 44 along the thickness direction of the stacked books. The Z-axis lifting rod 43 is a lead screw that controls the up and down movement of the printhead. The three-dimensional linkage design makes the printhead 44 move flexibly and precisely, and can quickly align with any printing position on the three sides of the book, resulting in high printing accuracy, clear pattern edges, and uniform color. The Z-axis lifting rod 43 can adjust the height of the printhead 44 to adapt to books with different stacking heights. The movement of the X and Y axes can adapt to books of different widths and lengths, greatly improving the equipment's versatility. The printhead 44 moves smoothly and responds quickly. Combined with the rotation of the book, it achieves continuous and efficient printing operations. The printing mechanism 4 is equipped with a distance sensor to detect the distance between the nozzle and the printing surface of the book in real time, ensuring that the printing distance is stable at 3-5mm, further improving printing quality and production efficiency.

[0051] It also features a height-adjustable ink stack. The height of the ink stack needs to be adjusted according to the position of the printhead 44 to ensure that the printhead 44 can be completely sealed with the ink stack cap when it returns to its original position, thus avoiding poor ink absorption or ink breakage due to gaps.

[0052] In another embodiment of this application, please refer to Figure 1-7 The working method of an inkjet printer includes the following steps: S1: Drive the two lifting and positioning mechanisms 2 to adjust their positions and place the six stacks of books on the lifting platform 201 so that the center of each stack of books coincides with the center of the rotation axis of the active clamping block 32 and the driven clamping block 33. S2: Control the book clamping rotation mechanism 3 to drive the active clamping block 32 to clamp the book; S3: Control the movement of the printing mechanism 4 to print on the first side of the book; S4: The lifting and positioning mechanism 2 descends, and the second drive component 35 of the book clamping and rotating mechanism 3 drives the book to rotate 90°, so that the second side of the book faces upward. S5: The printing mechanism prints on the second side 4 pairs of surfaces; S6: Repeat the 90° rotation to complete the printing on the third side; S7: The lifting and positioning mechanism 2 rises and resets, the active clamping block 32 and the driven clamping block 33 are released, and the book is taken out.

[0053] Specifically, the working method of this embodiment is based on the above-mentioned inkjet printer, and the specific processing object is six stacks of books with a size of 210mm×297mm and a thickness of 20mm.

[0054] The steps are as follows: S1: Start the two lifting and positioning mechanisms 2, and the third motor 210 drives the adjusting rod 207 to move to a position with a spacing of 20mm. Place the six stacks of books on the two lifting platforms 201. The adjusting rod 207 is in contact with the side of the books so that the center of each stack of books coincides with the center of the rotation axis of the clamping unit 301. S2: The second motor 202 drives the lifting platform 201 to rise, and the first drive component 34 drives the six clamping units 301 to clamp the book synchronously. S3: The X-axis servo motor of the inkjet printing mechanism 4 drives the Y-axis slide 42 to move horizontally, covering the area to be sprayed on the first side of the book. The Y-axis slide 42 moves along the stack thickness of the book. The Z-axis ball screw adjusts the height of the print head 44 to complete the inkjet printing at a resolution of 720dpi. S4: The lifting platform 201 descends to a preset height, and the second drive component 35 rotates the book 90°. S5: The nozzle 44 is positioned to the second side area to be sprayed via the X and Y axes, and the height is finely adjusted by the Z axis to complete the spraying. S6: Repeat the 90° rotation to complete the printing on the third side; S7: The lifting platform 201 rises and resets, the clamping unit 301 loosens, and the book is removed.

[0055] This system enables fully automated continuous printing on three sides of books, requiring only manual placement and removal of the books, significantly reducing human intervention, lowering labor costs, and improving production efficiency. The workflow is seamless, with positioning, clamping, printing, and rotation processes working in parallel, avoiding secondary positioning errors caused by manual flipping and ensuring seamless pattern connection, edge alignment, and color consistency across different sides. It can simultaneously print on six stacks of books, offering strong batch processing capabilities and meeting the industrial-scale mass production needs of high-end books and limited-edition albums. The method is simple and highly operable, relying on the coordinated operation of the equipment to achieve high printing accuracy and stability, significantly enhancing the aesthetic and collectible value of the books.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coding and color printing machine, characterized in that: It includes a frame (1), a lifting and positioning mechanism (2), a book clamping and rotating mechanism (3), and a printing mechanism (4); The book clamping and rotating mechanism (3) includes a mounting frame (31), an active clamping block (32), a driven clamping block (33), a first drive assembly (34), and a second drive assembly (35). The lifting and positioning mechanism (2) is movably disposed in the middle of the frame (1) and located below the mounting frame (31). The active clamping block (32) and the driven clamping block (33) are symmetrically mounted on the two inner sides of the mounting frame (31). The clamping space (300) formed between the active clamping block (32) and the driven clamping block (33) corresponds to the lifting platform (201) of the lifting and positioning mechanism (2). The first drive assembly (34) includes a lever arm connecting... The assembly comprises a rod (341), a cylinder (342), and a movable chain (343). The cylinder (342) is mounted on the mounting bracket (31). One end of the lever arm connecting rod (341) is connected to the output end of the cylinder (342), and the other end of the lever arm connecting rod (341) is movably connected to one end of the movable chain (343). The input end of the active clamping block (32) is movably connected to the other end of the movable chain (343). The second drive assembly (35) includes a first motor (351) and a rotating shaft (352) connected to the output end of the first motor (351). Both the active clamping block (32) and the driven clamping block (33) are drively connected to the rotating shaft (352). The printing mechanism (4) is movably positioned above the book clamping and rotating mechanism (3) and is used to print on the book held by the book clamping and rotating mechanism (3).

2. The inkjet printer according to claim 1, characterized in that: The lever arm link (341) includes an integrally formed transverse lever arm (341a) and a longitudinal lever arm (341b). The longitudinal lever arm (341b) is hinged to the output end of the cylinder (342). The transverse lever arm (341a) is movably connected to one end of the movable chain (343). The connection between the transverse lever arm (341a) and the longitudinal lever arm (341b) is hinged to the frame (1).

3. The inkjet printer according to claim 2, characterized in that: The transverse lever arm (341a) and the longitudinal lever arm (341b) form an angle α, which is 60-100°.

4. The inkjet printer according to claim 1, characterized in that: One active clamping block (32) and one driven clamping block (33) correspond to form a clamping unit (301), and a total of six clamping units (301) are provided; There are two lifting and positioning mechanisms (2), which are installed side by side horizontally in the middle of the frame (1); The six clamping units (301) are arranged in groups of three above each of the two lifting and positioning mechanisms (2), that is, each lifting and positioning mechanism (2) is above three clamping units (301).

5. The inkjet printer according to claim 1, characterized in that: The lifting and positioning mechanism (2) includes the lifting platform (201), the second motor (202), the driving sprocket (203), multiple driven sprockets (204), four lead screws (205) and the transmission chain (206). The second motor (202) is fixedly mounted on the frame (1), and the output end of the second motor (202) is fixedly connected to the drive sprocket (203); The four lead screws (205) are arranged in a rectangle at the four corners of the lifting platform (201). Each lead screw (205) has a driven sprocket (204) fixedly sleeved at its lower end, and its upper end is rotatably connected to the connecting seat on the lower surface of the lifting platform (201) through a ball bearing. The transmission chain (206) is sequentially wound around the driving sprocket (203) and a plurality of driven sprockets (204) to form a closed transmission chain; The second motor (202) drives the active sprocket (203) to rotate, which in turn drives multiple driven sprockets (204) to rotate synchronously via the transmission chain (206), thereby driving the four lead screws (205) to rotate synchronously, thus realizing the lifting movement of the lifting platform (201).

6. The inkjet printer according to claim 4, characterized in that: The lifting and positioning mechanism (2) also includes three adjusting rods (207). The three adjusting rods (207) extend along the thickness direction of the stacked books. The three adjusting rods (207) are adjustablely positioned above the lifting platform (201). The three adjusting rods (207) correspond one-to-one with the three sets of clamping units (301). Each adjusting rod (207) is attached to one side of the corresponding stack of books. The adjusting rods (207) work with the driven clamping block (33) and the lifting platform (201) to position the books.

7. The inkjet printer according to claim 6, characterized in that: The lifting platform (201) is provided with horizontally extending slide rails (208) on both sides near the two mounting brackets (31) below; each slide rail (208) is provided with a slider, and each slider is fixedly connected to a vertically arranged connecting plate (209); the three adjusting rods (207) are fixedly connected to the connecting plate (209), so that the adjusting rods (207) are higher than the upper surface of the lifting platform (201) and can move horizontally above the lifting platform (201) along the slide rails (208) with the connecting plate (209).

8. The inkjet printer according to claim 7, characterized in that: The lifting and positioning mechanism (2) also includes a third motor (210), an adjusting screw (211), a hard chrome rod (212), and a synchronous transmission assembly (213) that are all horizontally arranged below the lifting platform (201). The synchronous transmission assembly (213) includes a driving wheel, a driven wheel and a transmission synchronous belt. The driving wheel is fixedly connected to the output end of the third motor (210), and the two driven wheels are respectively fixedly sleeved on the same end of the two adjusting screws (211). The two adjusting screws (211) are symmetrically distributed between the two hard chrome rods (212); The third motor (210) drives the two adjusting screws (211) to rotate synchronously through the synchronous transmission assembly (213), drives the connecting plate (209) to slide smoothly along the hard chrome rod (212), and then drives the three adjusting rods (207) to move horizontally synchronously.

9. The inkjet printer according to claim 1, characterized in that: The inkjet printing mechanism (4) includes an X-axis guide rail (41), a Y-axis slide (42), a Z-axis lifting rod (43), and a printhead (44). The Y-axis slide (42) is slidably mounted on the X-axis guide rail (41); The Z-axis lifting rod (43) is mounted on the Y-axis slide (42); The nozzle (44) is installed at the lower end of the Z-axis lifting rod (43).

10. A method of operating a coding and color printing machine as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Drive the two lifting and positioning mechanisms (2) to adjust the position and place the books on the lifting platform (201) so that the center of each stack of books coincides with the center of the rotation axis of the active clamping block (32) and the driven clamping block (33); S2: Control the book clamping rotation mechanism (3) to drive the active clamping block (32) to clamp the book; S3: Control the movement of the printing mechanism (4) to print on the first side of the book; S4: The lifting and positioning mechanism (2) descends, and the second drive component (35) of the book clamping and rotating mechanism (3) drives the book to rotate 90°, so that the second side of the book faces upward; S5: The printing mechanism (4) prints on the second side; S6: Repeat the 90° rotation to complete the printing on the third side; S7: The lifting and positioning mechanism (2) rises and resets, the active clamping block (32) and the driven clamping block (33) are released, and the book is taken out.

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