Single-set DOD high-precision double-sided ink jet device

Abstract

The utility model belongs to the technical field of IC card making, and particularly relates to a single-set DOD high-precision double-sided ink jet device which comprises an ink jet device, a card carrying platform, a feeding manipulator, a discharging manipulator, a feeding card channel, an overturning card channel and a discharging card channel which are arranged on a workbench. The feeding clamping channel, the overturning clamping channel and the discharging clamping channel are arranged in the middle of the workbench and are sequentially arranged from right to left in the linear direction. The feeding mechanical arm and the discharging mechanical arm are arranged on one side face of the feeding clamping channel and one side face of the discharging clamping channel respectively. The movement track of the card carrying platform is parallel to the feeding clamping channel and the discharging clamping channel. And the ink jet device is arranged on the motion trail of the card carrying platform and is used for printing the card on the card carrying platform. According to the utility model, through alternate operation of the card carrying platform I and the card carrying platform II, high-efficiency operation of equipment and the platforms is realized; through cooperation of positive and negative operation of the feeding clamping channel, the overturning clamping channel and the discharging clamping channel, positive and negative printing of a single set of DOD is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of IC card making, and in particular relates to a single-set DOD high-precision double-sided inkjet device. Background Art

[0002] IC cards are currently in high circulation and in high demand. However, with the increasing demands of industry and individual consumers for personalized products, higher requirements have been placed on card types and the richness of card surface color information. Traditional card printing methods can no longer meet the current industry's demand for small-batch, low-cost, high-precision card production.

[0003] Against this backdrop, CMYK color Direct-On-Demand (DOD) printing technology emerged. DOD printing achieves precise printing on card surfaces by ejecting ink droplets on demand. However, traditional printing equipment faces a series of technical challenges when applying DOD technology. For example, the traditional conveyor belt plus encoder solution suffers from poor card transport stability during printing, prone to jitter and resulting in print position deviations. It is also difficult to maintain a uniform speed as cards pass through the printing area, resulting in variations in density and clarity of printed images and text. Furthermore, traditional equipment fails to meet industry standards for high-quality card printing. These challenges have severely hindered the widespread adoption of DOD printing technology within the card manufacturing industry.

[0004] With the gradual application of CMYK inkjet technology in the card manufacturing industry, more stringent requirements have been placed on card transport stability, encoding accuracy, and uniform speed. At the same time, card printing content has also evolved from early pre-printed cards to full card printing.

[0005] Therefore, developing a single-set DOD inkjet device that can achieve high-precision positioning and has a double-sided printing function has become an urgent problem to be solved in the current IC card making technology field. Utility Model Content

[0006] The utility model realizes efficient operation of the equipment and the platform through the alternating operation of the card loading platform 1 and the card loading platform 2; and realizes the printing of the front and back sides of the card through the forward and reverse operation coordination of the loading card channel, the flip card channel and the discharging card channel.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following specific technical solutions: a single-set DOD high-precision double-sided inkjet device, comprising: an inkjet device arranged on a workbench, a card carrying platform, a loading manipulator, an unloading manipulator, a loading card channel, a flip card channel and a discharging card channel;

[0008] The loading card channel, the turning card channel and the discharging card channel are arranged in the middle of the workbench and are arranged in sequence from right to left along a straight line;

[0009] The loading robot and the unloading robot are respectively arranged on one side of the loading card channel and the unloading card channel, and the card carrying platform is arranged on the other side of the loading card channel and the unloading card channel; the movement trajectory of the card carrying platform is parallel to the loading card channel and the unloading card channel; the inkjet device is arranged on the movement trajectory of the card carrying platform, and is used to print the cards on the card carrying platform.

[0010] Furthermore, the card carrying platform includes a linear motor module, a card carrying tray and a grating encoder;

[0011] The linear motor module is arranged on the workbench, and the setting direction of the linear motor module is parallel to the extension direction of the loading card channel; the card carrier tray is installed on the linear motor module, and the card carrier tray is driven to move back and forth between the loading position and the unloading position by the linear motor module; the grating encoder is arranged on the side of the linear motor module; the grating encoder monitors the position of the card carrier tray in real time and feeds back to the inkjet device.

[0012] Furthermore, the card carrier tray includes a card placement plate, a lifting cylinder, a tray guide rail and a negative pressure suction cup;

[0013] The card plate is composed of a number of raised platforms arranged in sequence, and the outline of the raised platforms is smaller than the outline of the card to be printed;

[0014] The tray guide rail and the lifting cylinder are both vertically fixed on the linear motor module; the telescopic end of the lifting cylinder is connected to the bottom of the card plate; the lower part of the card plate is also fixedly provided with a slider used in conjunction with the tray guide rail;

[0015] The negative pressure suction cup is embedded in the center of the card plate and the height of the negative pressure suction cup is lower than the upper surface of the card plate;

[0016] There are two card-carrying platforms, namely card-carrying platform 1 and card-carrying platform 2;

[0017] The structure of the second card loading platform is the same as that of the first card loading platform, and the card loading and unloading and printing operations are completed alternately.

[0018] Furthermore, the card carrier tray also includes a flying ink receiving groove; the flying ink receiving groove is a groove-shaped structure located below the card plate; the contour range of the flying ink receiving groove is larger than the contour range of the card plate.

[0019] Furthermore, the feeding card channel includes a feeding drive device, a feeding belt, a feeding card channel, a feeding pulley and a feeding connecting roller;

[0020] The feeding card channel serves as the main support of the feeding card channel, the bottom of which is fixed on the workbench, and the top of which is provided with a card slot, the width of which is equal to the width of the card to be printed;

[0021] There are several feeding pulleys, and a feeding belt is sheathed on the outside of the feeding pulley; the feeding belt is a partitioned belt, and partitions are arranged on the feeding belt at equal distances; the distance between two adjacent partitions is equal to the length of the card;

[0022] The feeding connecting roller is arranged at the junction of the feeding card track and the turning card track;

[0023] The feeding drive device is connected to a feeding pulley to provide power for the feeding track to operate. The feeding drive device can rotate forward or reverse.

[0024] Furthermore, the loading robot comprises a driving base, a Y-axis mechanism, a Z-axis mechanism and a positioning gripper;

[0025] The driving base is fixed on the workbench; the Y-axis mechanism is arranged on the top of the driving base; the Z-axis mechanism is arranged on the side of the Y-axis mechanism close to the card loading platform; the positioning gripper is arranged on the Z-axis mechanism for grabbing the card;

[0026] The Y-axis mechanism drives the Z-axis mechanism to move closer to or away from the card loading platform, and the Z-axis mechanism drives the positioning gripper to move up and down, thereby grabbing or putting down the card.

[0027] Furthermore, the positioning gripper comprises a positioning seat, a fixed claw, a floating claw, a negative pressure plate and a gripper guide rail;

[0028] There are several positioning seats, which are evenly spaced and arranged at the bottom of the positioning gripper; a fixed claw is provided on one side of the positioning seat, and a floating claw is provided on the other side; a negative pressure plate is provided at the center of the positioning seat;

[0029] The gripper guide rail is vertically arranged on the back of the positioning gripper, and the positioning gripper moves up and down along the gripper guide rail under the drive of the Z-axis mechanism.

[0030] Furthermore, the flipping card track includes a flipping drive device, a flipping belt, a flipping pulley, a flipping card support channel and a flipping device. The flipping belt is driven by the flipping drive device to transport the card to the flipping device. After the flipping device completes the flipping of the card, it is temporarily stored in the flipping card track and then transferred to the loading card track through the loading connecting roller.

[0031] Furthermore, it also includes a surface softening device and a curing device;

[0032] The surface softening device and the curing device are respectively arranged on the front and rear sides of the inkjet device; and are located above the movement track of the card carrying platform.

[0033] The utility model can achieve the following technical effects:

[0034] The utility model realizes the alternating operation of the card loading platform 1 and the card loading platform 2. When one platform performs printing, the other platform synchronously performs loading and unloading operations, thereby eliminating the waiting time of the equipment and improving the equipment utilization rate. Through the forward and reverse operation coordination of the loading card channel, the flipping card channel and the discharging card channel, only a single set of inkjet device is used to complete the double-sided inkjet printing of the card, thereby reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is the overall structural diagram of the double-sided printing device of the utility model;

[0036] Figure 2 This is the structural diagram of the loading robot of the utility model;

[0037] Figure 3 This is a structural diagram of the positioning gripper of the utility model;

[0038] Figure 4 This is a structural diagram of the card carrier platform 1 and the card carrier platform 2 of the present invention;

[0039] Figure 5 This is a first side view of the card carrying platform 1 and the card carrying platform 2 of the present invention;

[0040] Figure 6 This is a second side view of the card carrying platform 1 and the card carrying platform 2 of the present invention;

[0041] Figure 7 This is a structural diagram of the card carrier tray of the utility model;

[0042] Figure 8 This is a side view of the card carrier tray of the present invention;

[0043] Figure 9 It is a three-dimensional diagram of the loading card channel, the discharging card channel and the turning card channel of the utility model.

[0044] In the picture:

[0045] 1. Inkjet device; 101. Surface softening device; 102. Curing device;

[0046] 2. Feeding card channel; 21. Feeding pulley; 22. Feeding belt; 23. Feeding drive device; 24. Feeding card channel; 25. Feeding connecting roller;

[0047] 3. Loading robot; 31. Driving base; 32. Y-axis mechanism; 33. Z-axis mechanism; 34. Positioning gripper; 331. Positioning seat; 332. Floating claw; 333. Fixed claw; 334. Negative pressure plate; 335. Gripper guide rail;

[0048] 4. Card carrier platform 1; 41. Linear motor module; 42. Card carrier tray; 43. Grating encoder; 411. Card placement plate; 412. Lifting cylinder; 413. Tray guide rail; 414. Ink jet receiving groove; 415. Negative pressure suction cup;

[0049] 5. Card loading platform 2; 6. Unloading robot;

[0050] 7. Discharge card channel; 71. Discharge pulley; 72. Discharge belt; 73. Discharge drive device; 74. Discharge card channel; 75. Discharge connecting roller;

[0051] 8. Flip card channel; 81. Flip pulley; 82. Flip belt; 83. Flip drive device; 84. Flip card channel; 85. Flip device. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0053] refer to Figure 1-9 A single-set DOD high-precision double-sided inkjet device includes: an inkjet device 1 arranged on a workbench, a card carrying platform, a loading robot 3, an unloading robot 6, a loading card channel 2, a flip card channel 8 and a discharging card channel 7;

[0054] The loading card channel 2, the turning card channel 8 and the discharging card channel 7 are arranged in the middle of the workbench and are arranged in sequence from right to left along a straight line;

[0055] The loading channel 2 is located at the loading position and is used to receive incoming cards and store them on the loading channel 2. The discharging channel 7 is located at the unloading position and is used to discharge cards or transfer cards with one side printed to the flipping channel 8. After the cards are flipped through the flipping channel 8, they are transferred to the loading channel 2 through the flipping channel 8.

[0056] The loading robot 3 and the unloading robot 6 are respectively arranged on one side of the loading card channel 2 and the unloading card channel 7, and the card loading platform is arranged on the other side of the loading card channel 2 and the unloading card channel 7; the movement trajectory of the card loading platform is parallel to the loading card channel 2 and the unloading card channel 7; the inkjet device 1 is arranged on the movement trajectory of the card loading platform, and is used to print the cards on the card loading platform;

[0057] The loading robot 3 sucks multiple cards from the loading channel 2 to the card loading platform at one time. The card loading platform drives the cards to run stably and at high speed through the inkjet device 1 to complete the card inkjet action and stay in the unloading area. The cards pass through the surface softening device 101, the inkjet device 1 and the curing device 102 in sequence.

[0058] The unloading robot 6 transfers the card from the card loading platform to the discharge card channel 7. Cards requiring single-sided printing will be transferred to the subsequent workstation via the discharge card channel 7. For double-sided inkjet printing, cards that have completed single-sided printing will be reversed by the discharge card channel 7 and transferred to the flip card channel 8. After the card is flipped, it is transferred to the loading card channel 2 to prepare for reverse printing. In the double-sided printing state, the loading card channel 2 will sequentially receive cards to be printed from the external upstream transfer to the card loading platform and cards to be printed on the reverse side from the flip card channel 8 to the loading card channel 2. After completing the front and back printing in this order, the cards will be transferred to the discharge card channel 7 for subsequent processing requirements.

[0059] The loading card channel 2, the discharging card channel 7 and the flip card channel 8 have forward and reverse transportation functions, thereby realizing the round-trip transportation of cards from the loading position to the unloading position.

[0060] Furthermore, the card carrier platform includes a drive device, a card carrier tray 42 and a grating encoder 43; the drive device includes but is not limited to a linear motor module 41, and a ball screw or other linear transmission structure can also be used to drive the card carrier platform to perform linear reciprocating motion.

[0061] The linear motor module 41 is arranged on the workbench, and the setting direction of the linear motor module 41 is parallel to the extension direction of the loading card channel 2; the card carrier tray 42 is installed on the linear motor module 41, and the linear motor module 41 drives the card carrier tray 42 to move back and forth between the loading position and the unloading position; the grating encoder 43 is arranged on the side of the linear motor module 41; the grating encoder 43 monitors the position of the card carrier tray 42 in real time and feeds back to the inkjet device 1 to accurately control the inkjet trigger position.

[0062] Furthermore, the card carrier tray 42 includes a card placement plate 411 , a lifting cylinder 412 , a tray guide rail 413 and a negative pressure suction cup 415 ;

[0063] The card-holding plate 411 is composed of a plurality of raised platforms arranged in sequence, the outline of which is smaller than the outline of the card to be printed. In this embodiment, there are six raised platforms, which can hold six cards at a time. In actual use, the number of raised platforms is not fixed and can be set according to production requirements.

[0064] The tray guide rail 413 and the lifting cylinder 412 are both vertically fixed to the linear motor module 41; the telescopic end of the lifting cylinder 412 is connected to the bottom of the card plate 411; a slider for use with the tray guide rail 413 is also fixedly provided on the lower part of the card plate 411; the lifting cylinder 412 drives the card plate 411 to move up and down along the tray guide rail 413, thereby adjusting the height of the card plate 411;

[0065] The negative pressure suction cup 415 is embedded in the center of the card placement plate 411 and the height of the negative pressure suction cup 415 is lower than the upper surface of the card placement plate 411; after the card is in place, the negative pressure suction cup 415 absorbs the card to ensure that the card is flat and tightly attached to the card placement plate 411;

[0066] There are two card carrier platforms, namely card carrier platform 1 4 and card carrier platform 2 5;

[0067] The structure of the card carrier platform 2 5 is the same as that of the card carrier platform 1 4. The two are controlled by the lifting cylinder 412 to form an upper and lower spatial layout within the overlapping printing range. The linear motor module 41 drives them to realize synchronous opposite and reverse operation, alternately completing the loading and unloading and printing operations of the cards; realizing the efficient use of the inkjet mechanism and improving the utilization efficiency of the entire device.

[0068] During operation, Card Loading Platform 1 (4) moves away from the loading position while Card Loading Platform 2 (5) takes up its place to receive the card to be inkjetted by the loading robot 3. After the transfer is completed, Card Loading Platform 2 (5) drives the card through the inkjet device 1 at high speed and stability to the unloading position. After Card Loading Platform 1 (4) transfers the card to the unloading robot 6, Card Loading Platform 1 (4) descends back to the loading area, moving opposite Card Loading Platform 2 (5), exchanging loading and unloading states.

[0069] Furthermore, the card tray 42 further includes a flying ink receiving groove 414; the flying ink receiving groove 414 is a groove-shaped structure located below the card plate 411; the contour range of the flying ink receiving groove 414 is larger than the contour range of the card plate 411;

[0070] When in use, the ink receiving groove 414 is located below the card plate 411, and the card is located above the card plate 411; the raised periphery of the ink receiving groove 414 plays a receiving role, and the ink flying during printing falls into the ink receiving groove 414 without polluting the environment and equipment; it will not cause ink drop accumulation to affect the subsequent card positioning accuracy and the need for frequent cleaning of the positioning device during the production process.

[0071] Furthermore, the feeding card channel 2 receives the incoming cards and buffers them to a predetermined quantity, and includes a feeding drive device 23, a feeding belt 22, a feeding card support channel 24, a feeding pulley 21 and a feeding connecting roller 25;

[0072] The card feeding channel 24 serves as the main support of the card feeding channel 2. Its bottom is fixed on the workbench and its top is provided with a card slot. The width of the card slot is equal to the width of the card to be printed.

[0073] There are several feeding pulleys 21, and a feeding belt 22 is mounted on the outside of the feeding pulleys 21. The feeding belt 22 is a partitioned belt, and partitions are arranged on the feeding belt 22 at equal intervals. The distance between two adjacent partitions is equal to the length of the card. When in use, the lengthwise edge of the card is clamped between the two partitions, and the widthwise edge of the card is clamped on the card slot of the feeding card support channel 24.

[0074] The feeding connecting roller 25 is arranged at the intersection of the feeding card track 2 and the flip card track 8, and is used to transfer the cards on the flip card track 8 to the feeding card track 2.

[0075] The feeding drive device 23 is connected to a feeding pulley 21 to provide power for the feeding track 2 to operate. The feeding drive device 23 can rotate forward or reverse.

[0076] The feeding drive device 23 can drive the feeding belt 22 in the forward direction to transfer the card from the upper sequence to the feeding position, and can drive the feeding belt 22 in the reverse direction to cooperate with the feeding connecting roller 25 to transport the reverse-side printed card to the feeding position.

[0077] Furthermore, the loading robot 3 includes a driving base 31, a Y-axis mechanism 32, a Z-axis mechanism 33 and a positioning gripper 34;

[0078] The driving base 31 is fixed on the workbench; the Y-axis mechanism 32 is arranged on the top of the driving base 31; the Z-axis mechanism 33 is arranged on the side of the Y-axis mechanism 32 close to the card loading platform; the positioning gripper 34 is arranged on the Z-axis mechanism 33 for grabbing the card;

[0079] The Y-axis mechanism 32 drives the Z-axis mechanism 33 to move closer to or away from the card loading platform, and the Z-axis mechanism 33 drives the positioning gripper 34 to move up and down, thereby grabbing or putting down the card;

[0080] The Y-axis mechanism 32 transfers the card from the top of the loading channel 2 to the loading position of the card loading platform, and the Z-axis mechanism 33 drives the positioning gripper 34 to complete the grasping, positioning and precise position release of the card;

[0081] Furthermore, the positioning gripper 34 includes a positioning seat 331 , a fixed claw 333 , a floating claw 332 , a negative pressure plate 334 and a gripper guide rail 335 ;

[0082] There are several positioning seats 331, which are evenly spaced and arranged at the bottom of the positioning gripper 34; a fixed claw 333 is provided on one side of the positioning seat 331, and a floating claw 332 is provided on the other side; a negative pressure plate 334 is provided at the center of the positioning seat 331;

[0083] The gripper guide rail 335 is vertically arranged on the back of the positioning gripper 34. The positioning gripper 34 moves up and down along the gripper guide rail 335 driven by the Z-axis mechanism 33.

[0084] The card is tightly attached to the positioning claw through the guidance and preset pressure of the floating claw 332, ensuring high and reliable repeated positioning accuracy.

[0085] When the loading robot 3 picks up the card, the floating claw 332, the positioning claw and the descending action of the loading robot 3 are coordinated to complete the card's tight support on the positioning claw, complete the card positioning, and move the card to the top of the card loading platform through the Y-axis mechanism 32. The positioning gripper 34 descends to the exchange position and passes the card to the card loading platform 1 4 or the card loading platform 2 5;

[0086] Furthermore, the main structure of the unloading robot 6 is similar to that of the loading robot 3, and is used to transfer the printed cards from the card loading platform to the card discharge channel 7 during the card discharge process;

[0087] Furthermore, the discharge card channel 7 includes a discharge drive device 73, a discharge belt 72, a discharge card supporting channel 74, a discharge pulley 71 and a discharge connecting roller 75. The discharge drive device 73 drives the discharge belt 72 to transfer the card to the next sequence, or cooperates with the discharge connecting roller 75 to reversely convey the card with reverse printing requirements to the flip card channel 8; the flip card channel 8 flips the card over and stores it in the cache position in turn, and the cards to be printed will be conveyed to the loading card channel 2 in turn through the loading connecting roller 25.

[0088] The card discharging channel 74 serves as the main support of the card discharging channel 7. Its bottom is fixed on the workbench and its top is provided with a card slot. The width of the card slot is equal to the width of the card to be printed.

[0089] There are several discharge pulleys 71, and a discharge belt 72 is mounted on the outside of the discharge pulleys 71. The discharge belt 72 is a partitioned belt with partitions arranged at equal intervals on the discharge belt 72. The distance between two adjacent partitions is equal to the length of the card. When in use, the lengthwise edge of the card is clamped between the two partitions, and the widthwise edge of the card is clamped on the card slot of the discharge card support channel 74.

[0090] The discharge connecting roller 75 is arranged at the intersection of the discharge card channel 7 and the flip card channel 8, and is used to transfer the cards on the discharge card channel 7 to the flip card channel 8.

[0091] The discharge drive device 73 is connected to a discharge pulley 71 to provide power for the discharge card track 7 to operate. The discharge drive device 73 can rotate forward or reverse.

[0092] The discharge drive device 73 drives the discharge belt 72 to transfer the cards from the upper sequence to the discharge position, and can cooperate with the discharge connecting roller 75 to transport the reverse-printed cards to the flip card channel 8.

[0093] Furthermore, the flipping card track 8 includes a flipping drive device 83, a flipping belt 82, a flipping pulley 81, a flipping card support channel 84 and a flipping device 85. The flipping belt 82 is driven by the flipping drive device 83 to transport the card to the flipping device 85. After the flipping device 85 completes the flipping of the card, it is temporarily stored in the flipping card track 8, and then transferred to the loading card track 2 through the loading connecting roller 25.

[0094] The structures of the flip drive device 83, flip belt 82, flip pulley 81 and flip card channel 84 of the flip card channel 8 are the same as the structures and usages of the loading drive device 23, loading belt 22 and loading pulley 21 in the loading card channel 2.

[0095] The flipping device 85 is a prior art, and its structure refers to the CN113716300A patent, and the patent name is IC card two-axis flipping device 85 and two-axis flipping method.

[0096] Furthermore, it also includes a surface softening device 101 and a curing device 102;

[0097] The surface softening device 101 and the curing device 102 are respectively arranged on the front and rear sides of the inkjet device 1; and are located above the motion track of the card carrier platform;

[0098] The surface softening device 101 pre-treats the card surface to enhance ink adhesion; the curing device 102 cures the ink after inkjet printing to ensure the stability of the printed content.

[0099] The use process of the utility model single set DOD high-precision double-sided inkjet device specifically includes the following steps:

[0100] S1. Cards enter the loading channel 2: A specific number of cards enter the loading channel 2. In this embodiment, the set number is six cards; the loading drive device 23 of the loading channel 2 drives the loading belt 22 to move, transfer the cards and cache them on the loading card channel 24.

[0101] The cards are grabbed by the loading robot 3 and placed on the card loading platform: specifically, the loading robot 3 descends at the loading position and grabs six cards to be printed at the same time. During the grabbing process, the floating claw 332, fixed claw 333 and negative pressure plate 334 in the positioning gripper 34 cooperate to complete the positioning and grabbing. After grabbing, the loading robot 3 rises, and the Y-axis mechanism 32 transports the cards to the card loading platform position. The loading robot 3 descends to the exchange position to release the cards, and the negative pressure of the card loading platform starts to adsorb the cards.

[0102] There are two card loading platforms, namely card loading platform 1 4 and card loading platform 2 5; card loading platform 1 4 and card loading platform 2 5 work alternately; when card loading platform 1 4 is loading cards to print, card loading platform 2 5 synchronously returns to the loading position of the loading robot 3 to prepare for the next batch of cards;

[0103] S2. Single-sided inkjet printing is performed on the card; the card carrying platform drives the card to move and completes single-sided inkjet printing through the inkjet device 1; specifically, the card carrying platform 4 drives the card through the surface softening device 101, the inkjet device 1 and the curing device 102 in sequence to reach the unloading position, wherein when passing through the grating encoder 43 of the linear motor module 41, the grating encoder 43 feedbacks a signal to control the inkjet device 1 to perform printing.

[0104] While the card carrier platform 1 4 is printing, the card carrier platform 2 5 descends to the return height at the unloading position, quickly returns to the loading position and rises, waiting to receive the next batch of cards to be inkjetted by the loading robot 3; the card carrier platform 2 5 is adjusted in position by the lifting cylinder 412 and the linear motor module 41.

[0105] The card that has completed single-sided inkjet printing is transferred to the discharge card channel 7 by the unloading robot 6; specifically, the unloading robot 6 descends to the card suction position at the unloading position, the card loading platform releases the card, the unloading robot 6 sucks the card under negative pressure, rises and then transports it to the receiving and releasing position, descends and releases the inkjet-completed card; the unloading robot 6 completes the transfer of the card from the card loading platform to the discharge card channel 7.

[0106] S3, inkjet the card on both sides; when the discharge card channel 7 runs forward, the card can be transferred to the next sequence; the card with reverse inkjet printing requirements runs through the discharge card channel 7 in the reverse direction, and the card is transferred to the flip card channel 8 through the discharge connection roller 75.

[0107] The flip driving device 83 of the flip card track 8 drives the flip belt 82 to transport the card to the flip device 85 for flipping. The flipped card is temporarily stored in the buffer position of the flip card track 8.

[0108] The flip card track 8 transfers the cards to the feeding card track 2 through the flip connecting roller. The flip driving device 83 of the flip card track 8 cooperates with the feeding connecting roller 25 to arrange the cards in order and wait for the feeding robot 3 to grab them, completing the front and back printing cycle of the card.

[0109] S4. Repeat the above steps to inkjet the front and back of all cards, and transfer the cards with completed inkjet printing on both sides to the next sequence from the card discharge channel 7.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0111] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0112] The above specific embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A single set of DOD high-precision double-sided inkjet device, characterized in that: include: An inkjet device (1), a card carrying platform, a loading robot (3), and a unloading robot (6) are arranged on a workbench; It also includes a loading card path (2), a turning card path (8) and a discharging card path (7) which are sequentially arranged in the middle of the workbench from right to left; The loading manipulator (3) and the unloading manipulator (6) are respectively arranged on one side of the loading card path (2) and the unloading card path (7), and the card carrying platform is arranged on the other side of the loading card path (2) and the unloading card path (7); an inkjet device (1) for printing cards on the card carrying platform is arranged on the motion track of the card carrying platform; There are two card loading platforms, namely card loading platform 1 (4) and card loading platform 2 (5); the two platforms alternately complete the card loading and unloading and printing operations; The card carrying platform comprises a driving device, a card carrying tray (42) and a grating encoder (43); The driving device includes but is not limited to a linear motor module (41), the linear motor module (41) is arranged on a workbench, and the linear motor module (41) is arranged parallel to the extension direction of the loading card channel (2); the card carrier tray (42) is a liftable structure, and the card carrier tray (42) is installed on the linear motor module (41); the grating encoder (43) is arranged on the side of the linear motor module (41).

2. The single-set DOD high-precision double-sided inkjet device according to claim 1, characterized in that: The card carrying tray (42) comprises a card placement plate (411), a lifting cylinder (412) and a negative pressure suction cup (415); The card plate (411) includes a plurality of raised platforms arranged in sequence, and the contour range of the raised platforms is smaller than the contour range of the card to be printed; The lifting cylinder (412) is vertically fixed on the linear motor module (41); the telescopic end of the lifting cylinder (412) is connected to the bottom of the clamping plate (411); The negative pressure suction cup (415) is embedded in the center of the clamping plate (411), and the height of the negative pressure suction cup (415) is lower than the upper surface of the clamping plate (411).

3. The single-set DOD high-precision double-sided inkjet device according to claim 2, characterized in that: The feeding card channel (2) includes a feeding drive device (23), a feeding belt (22), a feeding card channel (24), a feeding pulley (21) and a feeding connecting roller (25); The bottom of the card feeding channel (24) is fixed on the workbench, and the top of the card feeding channel (24) is provided with a card slot, the width of which matches the width of the card to be printed; There are a plurality of feeding pulleys (21), and a feeding belt (22) is sleeved on the outside of the feeding pulley (21); the feeding belt (22) is a partitioned belt, and partitions are arranged at equal distances on the feeding belt (22); the distance between two adjacent partitions matches the length of the card to be printed; The feeding connecting roller (25) is arranged at the junction of the feeding card path (2) and the turning card path (8); The feeding drive device (23) can rotate forward or reverse, and the feeding drive device (23) drives the feeding pulley (21) to rotate.

4. The single-set DOD high-precision double-sided inkjet device according to claim 1, characterized in that: The loading robot (3) comprises a driving base (31), a Y-axis mechanism (32), a Z-axis mechanism (33) and a positioning gripper (34); The driving base (31) is fixed on the workbench; the Y-axis mechanism (32) is arranged on the top of the driving base (31); the Z-axis mechanism (33) is arranged on a side of the Y-axis mechanism (32) close to the card carrier platform; and the positioning gripper (34) is arranged on the Z-axis mechanism (33).

5. The single-set DOD high-precision double-sided inkjet device according to claim 4, characterized in that: The positioning gripper (34) comprises a positioning seat (331), a fixed claw (333), a floating claw (332) and a negative pressure plate (334); There are a plurality of positioning seats (331), which are arranged at equal intervals at the bottom of the positioning gripper (34); a fixed claw (333) is provided on one side of the positioning seat (331), and a floating claw (332) is provided on the other side; and a negative pressure plate (334) is provided at the center of the positioning seat (331).

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