A card personalization production line

Abstract

This invention discloses a card personalization production line, including an upstream card conveying device, a downstream card conveying device, and a double-sided DOD printing device. The double-sided DOD printing device includes a first surface printing module, a second surface printing module, a surface printing conveying module, a first handling module, a flipping module, and a second handling module. The surface printing conveying module includes a moving platform, a linear track, and a conveying drive mechanism. The first surface printing module, the flipping module, and the second surface printing module are arranged sequentially along the linear track. The moving platform is divided into a first moving platform and a second moving platform. The first moving platform is used to sequentially convey cards to the first surface printing module and the flipping module, and the second moving platform is used to receive cards flipped by the flipping module and convey them to the end of the second surface printing module and the downstream card conveying device. The card personalization production line of this invention has a more compact structure and higher production efficiency.

Description

Technical Field

[0001] This invention relates to the field of card processing, specifically to a card personalization production line. Background Technology

[0002] UV inkjet printing is commonly known as DOD (Dual Ink) printing. It boasts advantages such as safety, environmental friendliness, vibrant colors, and strong adhesion. With continuous technological advancements, DOD printing is becoming increasingly prevalent in the printing industry. Currently, it is basically divided into two types: scanning printing, where the ink is gradually layered through multiple reciprocating printhead movements, and single-pass printing, where the printhead is stationary and the material moves. Single-pass printing is more than ten times more efficient than multiple-pass printing. However, because the clarity of single-pass printing was previously significantly lower than that of multiple-pass printing, it was rarely used for high-precision and high-definition printing, especially for images. Now, the quality of single-pass printing has greatly improved. Besides monochrome printing, multi-printhead color mixing for color printing has also been successfully achieved. With the continuous expansion of market usage, the cost of DOD printing, including inkjet printers, is decreasing significantly. Its development direction is to improve printing quality and efficiency while saving space and labor costs. To achieve high-quality printing, two conditions are required: firstly, the material movement needs to be uniform, stable, and precise; secondly, the ink flow and timing control of multiple printheads must be precise. The latter is a technology that the inkjet printer itself needs to continuously improve.

[0003] Traditional material conveying methods use conveyor belts, such as the invention patent disclosed in application publication number CN118386690A, "A High-Precision Double-Sided DOD Printing Device, Method, and Production Line for Sheet Materials." The high-precision double-sided DOD printing device for sheet materials uses a first handling module to transport sheet materials from an upstream sheet material conveyor to a first positioning seat on a first moving platform. Before the sheet material is transported to the first positioning seat, an OCR module is used to acquire an image of the sheet material and prepare registration data recording the positional distribution of the image to be printed within the sheet material. Simultaneously, the position of the sheet material at the first positioning seat is precisely located. Based on the prepared registration data, the position of the first positioning seat in the Y-axis direction is precisely adjusted to align the positional relationship between the sheet material and the image to be printed in the Y-axis direction. A first servo drive mechanism moves the first positioning seat to the first surface printing module for printing the first side of the sheet material. During the printing process, the first positioning... The printing base moves along the X-axis, and high-precision printing start positioning in the X-axis direction is achieved by controlling the trigger time of the printing start. After the printing process of the first side of the sheet material is completed, the first servo drive mechanism drives the first positioning base to move to the flipping module. The flipping module flips the sheet material with the first side completed and transfers it to the second positioning base of the second moving platform. The module also precisely positions the sheet material in the second positioning base and the second positioning base in the Y-axis direction. The second servo drive mechanism drives the second positioning base to move to the second surface printing module for the printing process of the second side of the sheet material. During the printing process, the second positioning base moves along the X-axis, and high-precision printing start positioning in the X-axis direction is achieved by controlling the trigger time of the printing start. After the printing process of the second side of the sheet material is completed, the second servo drive mechanism drives the second positioning base to move to the second conveying module. The second conveying module conveys the sheet material with the double-sided printing process to the downstream sheet material conveying device for subsequent processes.

[0004] In the process of double-sided printing of sheet materials, the first surface printing module and the second surface printing module are arranged side by side, which results in a large and non-compact equipment size. In addition, the transfer stroke of sheet materials between the first positioning seat and the second positioning seat is large and time-consuming, which affects the processing efficiency of sheet materials. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a personalized card production line with a more compact structure and higher production efficiency.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is:

[0007] A card personalization production line includes an upstream card conveying device, a downstream card conveying device, and a double-sided DOD inkjet printing device disposed between the upstream and downstream card conveying devices.

[0008] The double-sided DOD printing apparatus includes a first surface printing module for printing on the first side of a card, a second surface printing module for printing on the second side of a card, a surface printing conveying module for sequentially conveying cards to the first and second surface printing modules, a first conveying module for transporting cards from an upstream card conveying device to the surface printing conveying module, a flipping module for flipping cards that have completed single-sided processing in the surface printing conveying module, and a second conveying module for transporting cards that have completed double-sided processing to a downstream card conveying device; wherein...

[0009] The first transport module is located at the end of the upstream card conveying device; the second transport module is located at the beginning of the downstream card conveying device.

[0010] The surface printing conveying module includes a moving platform, a linear track for the moving platform to slide, and a conveying drive mechanism for driving the moving platform to move along the linear track. The first surface printing module, the flipping module, and the second surface printing module are arranged sequentially along the linear track. There are two sets of moving platforms, namely a first moving platform and a second moving platform. The first moving platform is used to sequentially convey the card to be printed to the first surface printing module and the flipping module. The second moving platform is used to receive the card after it has been flipped by the flipping module and convey the flipped card to the end of the second surface printing module and the downstream card conveying device.

[0011] Preferably, the conveying drive mechanism is also in two sets, namely a first conveying drive mechanism and a second conveying drive mechanism, wherein the first conveying drive mechanism is used to drive the first mobile platform to move; and the second conveying drive mechanism is used to drive the second mobile platform to move.

[0012] Preferably, the mobile platform is provided with a plurality of positioning slots arranged along the card conveying direction, and the positioning slots are provided with a plurality of air holes, which are connected to a negative pressure device; the mobile platform is also provided with a first positioning mechanism for positioning the card located in the positioning slot in a direction parallel to its conveying direction and a second positioning mechanism for positioning the card in a direction perpendicular to its conveying direction, wherein there are multiple sets of the second positioning mechanism, which are respectively located at the end of the upstream card conveying device and at the flipping module.

[0013] Preferably, the first positioning mechanism includes a first fixed positioning member, a first movable positioning member disposed opposite to the first fixed positioning member, and a first positioning drive mechanism for driving the first movable positioning member to move in a direction opposite to the card conveying direction, wherein,

[0014] The first fixing and positioning component is fixed to the mobile platform;

[0015] The first positioning mechanism includes a first positioning cylinder, which is mounted on the moving platform. The piston rod of the first positioning cylinder is connected to the first moving positioning component. An avoidance groove is provided on the moving platform at a position corresponding to the first moving positioning component.

[0016] Preferably, the structure of the second positioning mechanism located at the end of the upstream card conveying device is as follows:

[0017] The second positioning mechanism includes a second fixed positioning member, a second movable positioning member disposed opposite to the second fixed positioning member, and a second positioning drive mechanism for driving the second movable positioning member to move along a direction perpendicular to the card conveying direction, wherein,

[0018] The second fixing and positioning component is fixed to the mobile platform;

[0019] The second movable positioning component is rotatably connected to the fixed frame; the second movable positioning component includes a rotating frame and a positioning rod and a drive wheel disposed on the rotating frame, wherein the middle part of the rotating frame is rotatably connected to the fixed frame; the positioning rod is disposed at the upper end of the rotating frame, and the drive wheel is disposed at the lower end of the rotating frame; under the weight of the rotating frame itself or under the elastic force of the torsion spring disposed between the rotating frame and the fixed frame, the positioning rod swings toward the second fixed positioning component;

[0020] The second positioning drive mechanism includes a lifting rod disposed at the bottom of the fixed frame and a lifting cylinder for driving the lifting rod to move up and down. The lifting rod extends along the conveying direction of the card. The lifting cylinder drives the lifting rod to move upward, so as to cause the lifting rod to push the drive wheel upward, thereby causing the positioning rod at the upper end of the rotating frame to swing outward.

[0021] Preferably, the flipping module includes a movable frame, multiple sets of clamping and flipping mechanisms disposed on the movable frame, and a moving drive mechanism for driving the movable frame to move along a direction perpendicular to the card conveying direction. The multiple sets of clamping and flipping mechanisms are arranged sequentially along the card conveying direction. The spacing between adjacent sets of clamping and flipping mechanisms is the same as the spacing between multiple positioning slots disposed on the movable platform. Each set of clamping and flipping mechanisms includes a clamping mechanism and a flipping mechanism for driving the clamping mechanism to flip. After the clamping mechanism clamps and flips the card 180°, the position of the card overlaps with the position of the adjacent card before the flip.

[0022] During the flipping process, the first mobile platform first transports multiple cards to the flipping station. The clamping mechanism in the multiple sets of clamping and flipping mechanisms clamps the multiple cards in the first mobile platform at the same time and flips them. During the flipping process, the first mobile platform leaves the flipping station. At the same time, the second mobile platform moves to the flipping station. Subsequently, the clamping mechanism in the multiple sets of clamping and flipping mechanisms flips the multiple cards 180° and then drops them into the second mobile platform.

[0023] Preferably, before flipping, the clamping mechanism is located near the side of the second surface printing module; after flipping, the clamping mechanism is located near the side of the first surface printing module.

[0024] Preferably, the clamping mechanism includes a clamping seat, an upper clamping block and a lower clamping block disposed on the clamping seat, and a clamping drive mechanism for driving the upper clamping block and the lower clamping block to move in opposite directions or in reverse, wherein the upper clamping block is located above the conveying plane of the surface inkjet printing conveying module, and the lower clamping block is located below the conveying plane of the surface inkjet printing conveying module.

[0025] The flipping mechanism includes a swing arm and a rotary motor for driving the swing arm to flip 180 degrees. The clamping seat is mounted on the swing arm, and the swing arm is rotatably connected to the movable frame via a rotating shaft. The rotary motor is mounted on the movable frame, and the main shaft of the rotary motor is connected to all the swing arms on the movable frame via a power transmission mechanism. The power transmission mechanism includes a driving gear and a driven gear, wherein the driving gear is mounted on the main shaft of the rotary motor. There are multiple sets of driven gears, and each set of driven gears is coaxially arranged with the swing arm in each set of clamping and flipping mechanisms. A transmission gear is arranged between the driven gears in two adjacent sets of clamping and flipping mechanisms. The transmission gear is rotatably connected to the movable frame and meshes with two adjacent sets of driven gears respectively. The driving gear meshes with one or two sets of driven gears.

[0026] Preferably, the structure of the second positioning mechanism located at the flipping module is as follows:

[0027] The second positioning mechanism includes a second fixed positioning member, a second movable positioning member disposed opposite to the second fixed positioning member, and a second positioning drive mechanism for driving the second movable positioning member to move along a direction perpendicular to the card conveying direction, wherein,

[0028] The second fixing and positioning component is fixed to the mobile platform;

[0029] The second positioning drive mechanism is disposed on both sides of each clamping mechanism, including a positioning block and a positioning cylinder for driving the positioning block to move perpendicular to the card conveying direction. The positioning cylinder is mounted on the clamping seat, and the piston rod of the positioning cylinder is connected to the positioning block. Limiting posts are provided at both ends of the positioning block. The clamping seat is provided with a limiting block between the two sets of limiting posts.

[0030] Preferably, the upstream card conveying device is further provided with a feeding module, a first OCR detection module and an information writing module in sequence; the downstream card conveying device is further provided with a second OCR detection module, a receiving module and a waste collection module in sequence; wherein, a first card flipping module is provided below the first OCR detection module; and a second card flipping module is provided below the second OCR detection module.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. In the card personalization production line of the present invention, the first surface printing module, the flipping module, and the second surface printing module are arranged sequentially along a straight track. A first moving platform sequentially transports the cards to be printed to the first surface printing module and the flipping module. A second moving platform receives the cards flipped by the flipping module and transports the flipped cards to the second surface printing module and the end of the downstream card conveying device. By adopting the card conveying method of the present invention, compared with the existing "high-precision double-sided DOD printing device for sheet materials," the card conveying journey can be greatly shortened, thereby improving the card production efficiency.

[0033] 2. In the card personalization production line of the present invention, the first surface printing module, the flipping module, and the second surface printing module are arranged sequentially along a straight track; therefore, the card personalization production line of the present invention only needs to set up three conveyor lines, namely the conveyor line of the upstream card conveying device, the conveyor line of the surface printing conveying module, and the conveyor line of the downstream card conveying device; compared with the four conveyor lines in the existing "high-precision double-sided DOD printing device for sheet materials" (i.e., the conveyor line of the upstream card conveying device, the conveyor line of the first moving platform, the conveyor line of the second moving platform, and the conveyor line of the downstream card conveying device), the card conveying stroke in the present invention is shorter, and the equipment size is smaller, and correspondingly, the equipment manufacturing cost is also lower. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the card personalization production line of the present invention.

[0035] Figure 2 This is a front view of the card personalization production line of the present invention.

[0036] Figure 3 This is a schematic diagram of the double-sided DOD inkjet printing device and the downstream card conveying device.

[0037] Figure 4 This is a schematic diagram of the surface printing conveyor device.

[0038] Figures 5-7 This is a structural diagram of a mobile platform from three different perspectives.

[0039] Figures 8-11 This is a structural diagram of the flip module from four different perspectives.

[0040] Figure 12 This is a schematic diagram of the clamping mechanism.

[0041] Figure 13 This is a schematic diagram of the positioning groove and air vent on the mobile platform. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0043] See Figures 1-13 The card personalization production line of the present invention includes an upstream card conveying device 4, a downstream card conveying device 13, and a double-sided DOD inkjet printing device disposed between the upstream card conveying device 4 and the downstream card conveying device 13.

[0044] See Figures 1-13The upstream card conveying device 4 is also sequentially equipped with a feeding module 1, a first OCR detection module 2, and an information writing module 3; the downstream card conveying device 13 is also sequentially equipped with a second OCR detection module 10, a receiving module 11, and a waste collection module 12; wherein,

[0045] A first card flipping module is provided below the first OCR detection module 2;

[0046] When the feeding device sends the card to the conveyor line of the upstream card conveying device 4, the upstream card conveying device 4 conveys the card to the area below the first OCR detection module 2. The card is flipped by the first card flipping module located below the first OCR detection module 2, so that the first OCR detection module 2 can detect the front and back of the card. The purpose is to ensure that the front of the card (i.e. the surface that needs to be coated for the first time) is facing up. Then, the upstream card conveying device 4 conveys the card to the information writing module 3 for information writing. After the information writing is completed, the upstream card conveying device 4 conveys the card to the end of the upstream card conveying device 4.

[0047] A second card flipping module is provided below the second OCR detection module 10;

[0048] When the double-sided printed card is conveyed to the area below the second OCR detection module 10 via the downstream card conveyor 13, the card is flipped by the second card flipping module located below the second OCR detection module 10. This allows the second OCR detection module 10 to perform front and back detection on the card. The purpose of this is to detect whether the front and back of the card have been printed and to check the printing quality, so that qualified and unqualified cards can be collected separately later. At the same time, the second card flipping module located below the second OCR detection module 10 can flip the card so that the front is facing up again. In this way, after the second side of the card has been printed, there is no need to set up a separate flipping module 7 to flip it, which helps to reduce the manufacturing cost of the equipment.

[0049] See Figures 1-13The double-sided DOD printing device includes a first surface printing module 6 for printing on the first side of a card, a second surface printing module 8 for printing on the second side of a card, a surface printing conveying module for sequentially conveying cards to the first surface printing module 6 and the second surface printing module 8, a first conveying module 5 for transporting cards from the upstream card conveying device 4 to the surface printing conveying module, a flipping module 7 for flipping cards that have completed single-sided processing in the surface printing conveying module, and a second conveying module 9 for transporting cards that have completed two-sided processing to the downstream card conveying device 13; wherein: the first conveying module 5 is located at the end of the upstream card conveying device 4, the flipping module 7 is located between the first surface printing module 6 and the second surface printing module 8 in the surface printing conveying module, and the second conveying module 9 is located at the beginning of the downstream card conveying device 13.

[0050] See Figures 1-13 The surface printing conveying module includes a moving platform 16, a linear track for sliding the moving platform 16, and a conveying drive mechanism 17 for driving the moving platform 16 to move along the linear track.

[0051] The first surface printing module 6, the flipping module 7, and the second surface printing module 8 are arranged sequentially along the extension direction of the straight track;

[0052] The conveying drive mechanism 17 drives the mobile platform 16 to move sequentially to the first surface inkjet printing module 6, the flipping module 7, and the second surface inkjet printing module 8. The conveying drive mechanism 17 can be driven by a mobile trolley, that is, the mobile platform 16 is driven to move on the guide rail by the mobile trolley, thereby driving the mobile platform 16 to the first surface inkjet printing module 6, the flipping module 7, and the second surface inkjet printing module 8.

[0053] In this embodiment, the moving platform 16 consists of two sets: a first moving platform 16A and a second moving platform 16B. The first moving platform 16A is used to sequentially transport the card to be printed to the first surface printing module 6 and the flipping module 7. The second moving platform 16B is used to transport the flipped card to the end of the second surface printing module 8 and the downstream card conveying device 13. Correspondingly, the conveying drive mechanism 17 also consists of two sets: a first conveying drive mechanism and a second conveying drive mechanism. The first conveying drive mechanism is used to drive the first moving platform 16A to move, and the second conveying drive mechanism is used to drive the second moving platform 16B to move.

[0054] See Figures 1-13The mobile platform 16 is provided with a plurality of positioning slots 14 arranged along the card conveying direction. The mobile platform 16 is provided with a first positioning mechanism for positioning the card in a direction parallel to the card conveying direction and a second positioning mechanism for positioning the card in a direction perpendicular to the card conveying direction. The second positioning mechanism is provided in multiple sets, and the multiple sets of second positioning mechanisms are respectively provided at the end of the upstream card conveying device 4 and at the flipping module 7.

[0055] With the above setup, when the first transport module 5 transports the card from the end of the upstream card conveying device 4 to the first moving platform 16A, the card located on the first moving platform 16A needs to be positioned. The first positioning mechanism and the second positioning mechanism correct the card's attitude in the X and Y axes. Then, the first moving platform 16A transfers the positioned card to the first surface printing module 6. Similarly, after the first surface printing module 6 prints the first side of the card on the first moving platform 16A, the first moving platform 16A transports the card with the first side printed to the flipping module 7. The flipping module 7 flips the card on the first moving platform 16A 180 degrees and then transfers it to the second moving platform 16B. During this process, the card transferred to the second moving platform 16B needs to be positioned to readjust the attitude of the card on the second moving platform 16B. The second moving platform 16B then transfers the card to the second surface printing module 8 to complete the printing of the second side of the card.

[0056] See Figures 1-13 The first positioning mechanism includes a first fixed positioning member 161, a first movable positioning member 162 disposed opposite to the first fixed positioning member 161, and a first positioning drive mechanism for driving the first movable positioning member 162 to move in the opposite direction to the card conveying direction. The first fixed positioning member 161 is fixed on the mobile platform 16. The first positioning mechanism includes a first positioning cylinder 166, which is mounted on the mobile platform 16. The piston rod of the first positioning cylinder 166 is connected to the first movable positioning member 162. The mobile platform 16 is provided with a clearance groove on the first movable positioning member 162.

[0057] When it is necessary to position the card in the X-axis direction, the first positioning cylinder 166 drives the first moving positioning member 162 to move in the direction of the first fixed positioning member 161, thereby realizing the positioning of the card in the X-axis direction; in order to ensure the movement accuracy of the first moving positioning member 162, a sliding mechanism is provided between the first moving positioning member 162 and the moving platform 16, such as a slide rail provided on the moving platform 16 and a slider provided on the slide rail; the first moving positioning member 162 is mounted on the slider.

[0058] See Figures 1-13 The structure of the second positioning mechanism located at the end of the upstream card conveying device 4 is as follows:

[0059] The second positioning mechanism includes a second fixed positioning member 163, a second movable positioning member 164 disposed opposite to the second fixed positioning member 163, and a second positioning drive mechanism for driving the second movable positioning member 164 to move along a direction perpendicular to the card conveying direction, wherein,

[0060] The second fixing and positioning component 163 is fixed on the mobile platform 16;

[0061] The second movable positioning component 164 is rotatably connected to the fixed frame; the second movable positioning component 164 includes a rotating frame 1642, a positioning rod 1641 disposed on the rotating frame 1642, and a drive wheel 1643, wherein the middle part of the rotating frame 1642 is rotatably connected to the fixed frame, the positioning rod 1641 is disposed at the upper end of the rotating frame 1642, and the drive wheel 1643 is disposed at the lower end of the rotating frame 1642; under the weight of the rotating frame 1642 itself or under the elastic force of the torsion spring disposed between the rotating frame 1642 and the fixed frame, the positioning rod 1641 swings toward the second fixed positioning component 163;

[0062] The second positioning drive mechanism includes a lifting rod 165 disposed at the bottom of the fixed frame and a lifting cylinder 167 for driving the lifting rod 165 to move up and down. The lifting rod 165 extends along the card conveying direction. The lifting cylinder 167 drives the lifting rod 165 to move upward, so as to cause the lifting rod 165 to push the drive wheel 1643 upward, thereby causing the positioning rod 1641 at the upper end of the rotating frame 1642 to swing outward.

[0063] When it is necessary to position the card in the positioning slot 14 in the Y-axis direction, the lifting cylinder 167 drives the lifting rod 165 to move downward, so that the lifting rod 165 separates downward from the drive wheel 1643 on the rotating frame 1642. Under the weight of the rotating frame 1642 itself or under the elastic force of the torsion spring set between the rotating frame 1642 and the fixed frame, the positioning rod 1641 swings towards the second fixed positioning member 163, thereby pushing the card towards the second fixed positioning member 163. When the card contacts the second fixed positioning member 163, the positioning of the card in the Y-axis direction is completed.

[0064] See Figures 1-13 The positioning groove 14 is provided with multiple sets of air holes 15, which are connected to the negative pressure device. When the first positioning mechanism and the second positioning mechanism position the card, the negative pressure device is not activated. However, when the card is positioned, the negative pressure device is activated, which generates negative pressure in the positioning groove 14, thereby adsorbing the card into the positioning groove 14 and preventing the card from shifting position during transportation and printing. The negative pressure device will stop working when the flipping module 7 flips the card after the first side printing is completed and when the second transport module 9 transports the card on the second moving platform 16B to the downstream card conveying device 13, so as to facilitate the flipping and transfer of the card.

[0065] See Figures 1-13 The first transport module 5 and the second transport module 9 have the same structure, including a transport frame, multiple sets of transport components mounted on the transport frame, a lifting and transporting drive mechanism for driving the transport components to move up and down, and a lateral transporting drive mechanism for driving the transport components to move along a direction perpendicular to the card conveying direction. The transport component is a suction nozzle. The lifting and transporting drive mechanism and the lateral transporting drive mechanism can be driven by a cylinder or an electric push rod. Alternatively, the first transport module 5 and the second transport module 9 in this embodiment can also be implemented using existing transport devices.

[0066] See Figures 1-13 The flipping module 7 includes a movable frame 711, multiple sets of clamping and flipping mechanisms disposed on the movable frame 711, and a moving drive mechanism for driving the movable frame 711 to move along a direction perpendicular to the card conveying direction.

[0067] Multiple sets of clamping and flipping mechanisms are arranged sequentially along the card conveying direction. The spacing between adjacent sets of clamping and flipping mechanisms is the same as the spacing between multiple positioning slots 14 provided on the mobile platform 16. Each set of clamping and flipping mechanisms includes a clamping mechanism and a flipping mechanism for driving the clamping mechanism to flip. After the clamping mechanism clamps the card and flips it 180°, the position of the card overlaps with the position of the adjacent card before the flip. Through the above settings, multiple cards can be flipped at one time, and the spacing between the cards after flipping remains unchanged and consistent with the spacing between the cards on the mobile platform 16. This effectively achieves rapid card flipping and handover, allowing card flipping and handover to be carried out synchronously, thereby improving work efficiency. It also makes the structure more compact and the card positioning more accurate after flipping.

[0068] In addition, during the flipping process, the first moving platform 16A first transports multiple cards to the flipping station. The clamping mechanisms in the multiple sets of clamping and flipping mechanisms simultaneously clamp the multiple cards in the first moving platform 16A and flip them. During the flipping process, the first moving platform 16A leaves the flipping station, and at the same time, the second moving platform 16B moves to the flipping station. Subsequently, the clamping mechanisms in the multiple sets of clamping and flipping mechanisms flip the multiple cards 180° and drop them into the second moving platform 16B. By utilizing the time for flipping the cards using the clamping and flipping mechanisms, the first moving platform 16A can quickly leave and the second moving platform 16B can quickly reach the card receiving position, making the card flipping and handover time as compact as possible, minimizing the card flipping and handover time, and improving production efficiency.

[0069] In addition, before flipping, the clamping mechanism is located on the side closer to the second surface printing module 8, and after flipping, it is located on the side closer to the first surface printing module 6. This helps to shorten the length of the card flipping station and make the length of the straight track as short as possible, thereby helping to reduce the size of the equipment.

[0070] See Figures 1-13 The clamping mechanism includes a clamping base 701, an upper clamping block 702 and a lower clamping block 703 disposed on the clamping base 701, and a clamping drive mechanism (e.g., a finger cylinder) for driving the upper clamping block 702 and the lower clamping block 703 to move in opposite directions or in reverse. The upper clamping block 702 is located above the conveying plane of the surface inkjet printing conveying module, and the lower clamping block 703 is located below the conveying plane of the surface inkjet printing conveying module.

[0071] The flipping mechanism includes a rotary motor 706 for driving the clamping seat 701 to flip 180 degrees. The clamping seat 701 is mounted on a swing arm 704, which is rotatably connected to the movable frame 711 via a rotating shaft. The rotary motor 706 is mounted on the movable frame 711, and its main shaft is connected to all the swing arms 704 on the movable frame 711 via a power transmission mechanism. The power transmission mechanism includes a driving gear and a driven gear 705. The driving gear is mounted on the main shaft of the rotary motor 706; there are multiple sets of driven gears 705, each set of driven gears 705 is coaxially arranged with the swing arm 704 in each set of clamping and flipping mechanisms; a transmission gear 713 is arranged between the driven gears 705 in two adjacent sets of clamping and flipping mechanisms, the transmission gear 713 is rotatably connected to the moving frame 711, and the transmission gear 713 meshes with two adjacent sets of driven gears 705 respectively; the driving gear meshes with one or two sets of driven gears 705.

[0072] The moving drive mechanism includes a drive cylinder 710 mounted on the frame, the piston rod of which is connected to the moving frame 711; a sliding guide mechanism 708 is provided between the bottom of the moving frame 711 and the frame; the drive cylinder 710 drives the moving frame 711 to move along a direction perpendicular to the card conveying direction; and a limiting block 707 is provided at the end position to limit the moving frame 711.

[0073] With the above configuration, after the first moving platform 16A completes the printing of the first side of the card, it transports the card to the flipping module 7. The moving drive mechanism drives the moving frame 711 to move along a direction perpendicular to the card's transport direction, so that the upper clamping block 702 and the lower clamping block 703 are located on the upper and lower sides of the card, respectively. Subsequently, the clamping drive mechanism actuates, causing the upper clamping block 702 and the lower clamping block 703 to clamp the card. Then, the rotary motor 706 drives the clamping seat 701 to rotate 180 degrees through the power transmission mechanism. During the flipping process, the first moving platform 16A... After leaving the flipping station, the second moving platform 16B moves to the flipping station. Subsequently, the clamping mechanism in the multiple sets of clamping and flipping mechanisms flips multiple cards 180° and drops them into the positioning slot 14 of the second moving platform 16B. At the same time, the first moving platform 16A resets, that is, returns to the end of the upstream card conveying device 4. The second moving platform 16B conveys these cards with the first side printed to the second surface printing module 8 for the second side printing. After the printing is completed, they are sent to the beginning of the downstream card conveying device 13 and transferred by the second handling module 9 to the conveying line of the downstream card conveying device 13.

[0074] See Figures 1-13The structure of the second positioning drive mechanism located at the flipping module 7 is as follows:

[0075] The second positioning mechanism includes a second fixed positioning member 163, a second movable positioning member 164 disposed opposite to the second fixed positioning member 163, and a second positioning drive mechanism for driving the second movable positioning member 164 to move along a direction perpendicular to the card conveying direction, wherein,

[0076] The second fixing and positioning component 163 is fixed on the mobile platform 16;

[0077] The second positioning drive mechanism is disposed on both sides of each clamping mechanism, including a positioning block 709 and a second positioning cylinder for driving the positioning block 709 to move perpendicular to the card conveying direction. The positioning block 709 constitutes the second moving positioning member 164. The second positioning cylinder is mounted on the clamping seat 701, and the piston rod of the second positioning cylinder is connected to the positioning block 709. Limiting posts 712 are provided at both ends of the positioning block 709. The clamping seat 701 is provided with a limiting block between the two sets of limiting posts 712. The movement stroke of the positioning block 709 can be limited by the limiting posts 712 on both sides.

[0078] After the card is flipped 180 degrees and transferred to the second moving platform 16B, the card needs to be repositioned on the second moving platform 16B. The first positioning mechanism on the moving platform 16B positions the card in the X-axis direction (this process has been described in detail above and will not be repeated). When the card needs to be positioned in the Y-axis direction, the second positioning cylinder drives the positioning block 709 to move along the direction perpendicular to the card's transport direction, thereby pushing the card toward the second fixed positioning member 163. When the card contacts the second fixed positioning member 163, the positioning of the card in the Y-axis direction is completed. Subsequently, the negative pressure device is activated, thereby adsorbing the positioned card onto the second moving platform 16B.

[0079] See Figures 1-13 Both the first surface printing module 6 and the second surface printing module 8 are equipped with static electricity removal modules at their feed inlets.

[0080] See Figures 1-13 The working principle of the card personalization production line of the present invention is as follows:

[0081] First, the first transport module 5 transports the card from the upstream card conveying device 4 to the first moving platform 16A. Before the card is transported to the first moving platform 16A, the first OCR detection module 2 has already acquired an image of the card and prepared registration data to record the position distribution of the image to be printed in the card. At the same time, the position of the card on the first moving platform 16A is precisely positioned. Based on the prepared registration data, the position of the first moving platform 16A in the Y-axis direction is precisely adjusted so that the positional relationship between the card and the image to be printed in the Y-axis direction corresponds.

[0082] Next, the first conveying drive mechanism 17 drives the first moving platform 16A to the first surface inkjet printing module 6 to perform inkjet printing on the first side of the card; after the inkjet printing on the first side of the card is completed, the first conveying drive mechanism 17 drives the first moving platform 16A to the flipping module 7.

[0083] Subsequently, the flipping module 7 flips the card that has completed the first side processing and transfers it to the second moving platform 16B; and accurately positions the card in the second moving platform 16B.

[0084] Then, the second conveying drive mechanism 17 drives the second moving platform 16B to the second surface inkjet printing module 8 to perform inkjet printing on the second side of the card; after completing the inkjet printing on the second side of the card, the second conveying drive mechanism 17 drives the second moving platform 16B to the second transport module 9; the second transport module 9 transports the card that has completed double-sided inkjet printing to the downstream card conveying device 13 for subsequent processes.

[0085] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A card personalization production line, characterized in that, This includes an upstream card conveyor, a downstream card conveyor, and a double-sided DOD inkjet printing unit located between the upstream and downstream card conveyors. The double-sided DOD printing apparatus includes a first surface printing module for printing on the first side of a card, a second surface printing module for printing on the second side of a card, a surface printing conveying module for sequentially conveying cards to the first and second surface printing modules, a first conveying module for transporting cards from an upstream card conveying device to the surface printing conveying module, a flipping module for flipping cards that have completed single-sided processing in the surface printing conveying module, and a second conveying module for transporting cards that have completed double-sided processing to a downstream card conveying device; wherein... The first transport module is located at the end of the upstream card conveying device; the second transport module is located at the beginning of the downstream card conveying device. The surface printing conveying module includes a moving platform, a linear track for the moving platform to slide, and a conveying drive mechanism for driving the moving platform to move along the linear track. The first surface printing module, the flipping module, and the second surface printing module are arranged sequentially along the linear track. There are two sets of moving platforms, namely a first moving platform and a second moving platform. The first moving platform is used to sequentially convey the card to be printed to the first surface printing module and the flipping module. The second moving platform is used to receive the card after it has been flipped by the flipping module and convey the flipped card to the end of the second surface printing module and the downstream card conveying device. The conveying drive mechanism is also divided into two sets, namely a first conveying drive mechanism and a second conveying drive mechanism, wherein the first conveying drive mechanism is used to drive the first mobile platform to move; and the second conveying drive mechanism is used to drive the second mobile platform to move. The mobile platform is provided with multiple positioning slots arranged along the card conveying direction. Multiple sets of air holes are provided in the positioning slots and are connected to a negative pressure device. The mobile platform is also provided with a first positioning mechanism for positioning the card located in the positioning slot in a direction parallel to its conveying direction and a second positioning mechanism for positioning the card in a direction perpendicular to its conveying direction. The second positioning mechanism is provided in multiple sets, which are respectively located at the end of the upstream card conveying device and at the flipping module.

2. The card personalization production line according to claim 1, characterized in that, The first positioning mechanism includes a first fixed positioning member, a first movable positioning member disposed opposite to the first fixed positioning member, and a first positioning drive mechanism for driving the first movable positioning member to move in a direction opposite to the card conveying direction, wherein, The first fixing and positioning component is fixed to the mobile platform; The first positioning mechanism includes a first positioning cylinder, which is mounted on the moving platform. The piston rod of the first positioning cylinder is connected to the first moving positioning component. An avoidance groove is provided on the moving platform at a position corresponding to the first moving positioning component.

3. The card personalization production line according to claim 2, characterized in that, The structure of the second positioning mechanism located at the end of the upstream card conveying device is as follows: The second positioning mechanism includes a second fixed positioning member, a second movable positioning member disposed opposite to the second fixed positioning member, and a second positioning drive mechanism for driving the second movable positioning member to move along a direction perpendicular to the card conveying direction, wherein, The second fixing and positioning component is fixed to the mobile platform; The second movable positioning component is rotatably connected to the fixed frame; the second movable positioning component includes a rotating frame and a positioning rod and a drive wheel disposed on the rotating frame, wherein the middle part of the rotating frame is rotatably connected to the fixed frame; the positioning rod is disposed at the upper end of the rotating frame, and the drive wheel is disposed at the lower end of the rotating frame; under the weight of the rotating frame itself or under the elastic force of the torsion spring disposed between the rotating frame and the fixed frame, the positioning rod swings toward the second fixed positioning component; The second positioning drive mechanism includes a lifting rod disposed at the bottom of the fixed frame and a lifting cylinder for driving the lifting rod to move up and down. The lifting rod extends along the conveying direction of the card. The lifting cylinder drives the lifting rod to move upward, so as to cause the lifting rod to push the drive wheel upward, thereby causing the positioning rod at the upper end of the rotating frame to swing outward.

4. The card personalization production line according to claim 1, characterized in that, The flipping module includes a movable frame, multiple sets of clamping and flipping mechanisms mounted on the movable frame, and a moving drive mechanism for driving the movable frame to move along a direction perpendicular to the card conveying direction. The multiple sets of clamping and flipping mechanisms are arranged sequentially along the card conveying direction. The spacing between adjacent sets of clamping and flipping mechanisms is the same as the spacing between multiple positioning slots on the movable platform. Each set of clamping and flipping mechanisms includes a clamping mechanism and a flipping mechanism for driving the clamping mechanism to flip. After the clamping mechanism clamps and flips the card 180°, the position of the card overlaps with the position of the adjacent card before the flip. During the flipping process, the first mobile platform first transports multiple cards to the flipping station. The clamping mechanism in the multiple sets of clamping and flipping mechanisms clamps the multiple cards in the first mobile platform at the same time and flips them. During the flipping process, the first mobile platform leaves the flipping station. At the same time, the second mobile platform moves to the flipping station. Subsequently, the clamping mechanism in the multiple sets of clamping and flipping mechanisms flips the multiple cards 180° and then drops them into the second mobile platform.

5. The card personalization production line according to claim 4, characterized in that, Before flipping, the clamping mechanism is located near the side of the second surface printing module; after flipping, the clamping mechanism is located near the side of the first surface printing module.

6. The card personalization production line according to claim 5, characterized in that, The clamping mechanism includes a clamping seat, an upper clamping block and a lower clamping block disposed on the clamping seat, and a clamping drive mechanism for driving the upper clamping block and the lower clamping block to move in opposite directions or in reverse. The upper clamping block is located above the conveying plane of the surface inkjet printing conveying module, and the lower clamping block is located below the conveying plane of the surface inkjet printing conveying module. The flipping mechanism includes a swing arm and a rotary motor for driving the swing arm to flip 180 degrees. The clamping seat is mounted on the swing arm, and the swing arm is rotatably connected to the movable frame via a rotating shaft. The rotary motor is mounted on the movable frame, and the main shaft of the rotary motor is connected to all the swing arms on the movable frame via a power transmission mechanism. The power transmission mechanism includes a driving gear and a driven gear, wherein the driving gear is mounted on the main shaft of the rotary motor. There are multiple sets of driven gears, and each set of driven gears is coaxially arranged with the swing arm in each set of clamping and flipping mechanisms. A transmission gear is arranged between the driven gears in two adjacent sets of clamping and flipping mechanisms. The transmission gear is rotatably connected to the movable frame and meshes with two adjacent sets of driven gears respectively. The driving gear meshes with one or two sets of driven gears.

7. The card personalization production line according to claim 6, characterized in that, The structure of the second positioning mechanism located at the flipping module is as follows: The second positioning mechanism includes a second fixed positioning member, a second movable positioning member disposed opposite to the second fixed positioning member, and a second positioning drive mechanism for driving the second movable positioning member to move along a direction perpendicular to the card conveying direction, wherein, The second fixing and positioning component is fixed to the mobile platform; The second positioning drive mechanism is disposed on both sides of each clamping mechanism, including a positioning block and a positioning cylinder for driving the positioning block to move perpendicular to the card conveying direction. The positioning cylinder is mounted on the clamping seat, and the piston rod of the positioning cylinder is connected to the positioning block. Limiting posts are provided at both ends of the positioning block. The clamping seat is provided with a limiting block between the two sets of limiting posts.

8. The card personalization production line according to claim 1, characterized in that, The upstream card conveying device is also equipped with a feeding module, a first OCR detection module, and an information writing module in sequence; the downstream card conveying device is also equipped with a second OCR detection module, a receiving module, and a waste collection module in sequence; wherein, a first card flipping module is provided below the first OCR detection module; and a second card flipping module is provided below the second OCR detection module.

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