High-speed card printing equipment

Abstract

The invention discloses high-speed identification card printing equipment which comprises a primary ink box, a conduction band platform, a card issuing device, a chip read-write device, a CCD device, an electrostatic eliminating device, a printing module, a secondary ink box, a lifting device, an electrical module, a supporting frame and a card collecting device. According to the printing equipment, the card issuing device is arranged, so that speed limitation and personnel operation requirements of manually placing cards are eliminated; a chip read-write device is arranged close to the card issuing device, so that automatic association between card chip information and a printing task is realized, and accurate printing of card information is realized; the CCD device is arranged in front of the printing module and can capture the position of the card on the guide belt platform, so that a printing image is rectified, and the printing image is accurately printed on the position of a card target; secondary ink supply is carried out through the negative pressure device, and the printing process can be fast and stable; and the UV curing lamps are arranged among the printing nozzles, so that the ink can be quickly dried in a high-speed running state.

Description

Technical Field

[0001] The present invention relates to the technical field of card printing, and in particular to a high-speed card printing device. Background Art

[0002] There are two main types of existing inkjet printing technologies: multi-pass mode and one-pass mode.

[0003] The card printing industry uses a multi-pass mode. Its principle is this: a drive motor drives one or two sets of printheads, spraying ink in a reciprocating motion (horizontally) perpendicular to the print media's longitudinal direction (longitudinal). After each print, a stepper motor moves the print media longitudinally by the printing distance. The number of print passes required to create the image determines the horizontal resolution of the printout. Multi-pass printing is characterized by the fact that each printout is limited by the width of the printheads and requires the coordinated operation of the drive motor and stepper motor, both of which require frequent starting and stopping. This limits the printing speed of multi-pass printing.

[0004] The ONE PASS mode works by rapidly moving the media beneath the printhead once. Multiple nozzles within the printhead work together to control ink droplet ejection based on image data. This precisely deposits ink onto specific locations, achieving fast, high-quality printing. Applications primarily include traditional manufacturing, such as printing labels, product packaging, and high-volume printing. To ensure high-speed printing accuracy, the printed substrate is typically roll-to-roll.

[0005] Chinese patent application CN216993621U discloses a single-pass UV printer comprising a carrying platform, a conveyor belt, and a UV printing assembly. The conveyor belt and UV printing assembly are mounted on the carrying platform. A material pressure member is also provided on the carrying platform to restrict material movement. The pressure member is positioned above the conveyor belt, forming a material gap between the pressure member and the conveyor belt for material to pass through. A printing channel is formed between the UV printing assembly and the conveyor belt.

[0006] Chinese patent application CN205929820U discloses a sustainable high-speed inkjet printing device comprising a piezoelectric inkjet printhead, a printhead mounting plate, a horizontal position adjustment mechanism, a vertical lift plate, a horizontally movable plate, an inkjet printhead drive and control system, a horizontal reciprocating drive mechanism, a vertical lift drive mechanism, a mounting bracket, an ink supply and pressure balancing system, a print medium transport mechanism, and an inkjet printing assembly. The piezoelectric inkjet printhead, in conjunction with the inkjet printhead drive and control system, performs horizontal reciprocating printing at a constant speed. Each group of printheads can be independently controlled, with an optimal speed of 0.01-0.3 m / min. All nozzles participate in printing.

[0007] The single-PASS technology involved in Chinese patent application CN216993621U is relatively simple. Its main technical direction is to prevent the material from wrinkling during the printing process. It does not have the functions of card positioning at high speed, stable ink supply of multi-color ink, and chip information reading and writing. It is not suitable for card printing of various material types, sizes and specifications and personalized data.

[0008] Chinese patent application CN205929820U uses water-based inkjet printing, which is mainly suitable for high-speed printing of QR codes, barcodes, etc. on flexible media. Summary of the Invention

[0009] In view of the shortcomings of the prior art, the present invention aims to provide a high-speed card printing device.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A high-speed card printing device, including a primary ink cartridge, a guide belt platform, a card issuing device, a chip reading and writing device, a CCD device, a static elimination device, a printing module secondary ink cartridge, a lifting device, an electrical module, a support frame and a card receiving device;

[0012] The primary ink cartridge, negative pressure device, and electrical module are arranged on the support frame, and a tape guide platform is provided on the top of the support frame; a card issuing device is provided at one end of the tape guide platform, and a card receiving device is provided at the other end; a chip reading and writing device, a CCD device, an anti-static device, and a lifting device are provided in sequence between the card issuing and receiving devices, and the printing module and secondary ink cartridge are provided on the lifting device; the printing module has multiple print heads;

[0013] The number of the primary ink cartridges and the secondary ink cartridges is the same as the number of the print heads of the printing module, and each primary ink cartridge is connected to each secondary ink cartridge in a one-to-one correspondence, and each secondary ink cartridge is connected to each print head in a one-to-one correspondence;

[0014] The electrical module includes a power supply device and a PLC automation control system. The power supply device is used to power the tape guide platform, the card issuing device, the chip reading and writing device, the CCD device, the static electricity removal device, the printing module, the lifting device and the PLC automation control system. The PLC automation control system is communicatively connected to the tape guide platform, the card issuing device, the chip reading and writing device, the CCD device, the static electricity removal device, the printing module and the lifting device.

[0015] Furthermore, the guide belt platform is provided with a speed sensor, which is used to measure the transmission speed of the guide belt platform and is communicatively connected to the PLC automatic control system.

[0016] Furthermore, the high-speed card printing device also includes a negative pressure device, and each ink path connected to the primary ink cartridge and the secondary ink cartridge is connected to a negative pressure device respectively; the negative pressure device is powered by a power supply device and is communicatively connected to the PLC automatic control system.

[0017] Furthermore, the secondary ink cartridge has a heating function for heating and maintaining the ink.

[0018] Furthermore, a UV curing lamp is provided between each printing nozzle.

[0019] Furthermore, the lifting device is provided with a waste ink recovery tray, and the waste ink recovery tray is provided with an ink absorption pad.

[0020] Furthermore, the card receiving device includes an aluminum square box for stacking printed cards.

[0021] Furthermore, a color mark sensor is provided in front of each print head on the printing module. The color mark sensor is used to read the position information of the card after detecting the color information and upload it to the printing module. The print head control system of the printing module calculates the delayed inkjet time of the corresponding print head according to the position information of the card and the current transmission speed of the guide belt platform, and controls the inkjet timing of each print head accordingly.

[0022] The present invention also provides a working method of the above-mentioned high-speed card printing device, the specific process of which is as follows:

[0023] After the equipment starts up and self-checks, it enters standby mode. The PLC automatic control system receives the data of the document to be printed and controls the belt guide platform to start. The belt guide platform accelerates to the preset speed and enters a stable operation state. The PLC automatic control system controls the lifting device to drive the printing module down to the printing height.

[0024] After the PLC automatic control system confirms the transmission speed of the guide belt platform through data from the speed sensor, it controls the card issuing device to convey the cards to be printed one by one to the guide belt platform. Under the action of the guide belt platform, the cards to be printed pass through the chip reader / writer, which reads the chip information on the cards to be printed and transmits it to the PLC automatic control system. Under the action of the guide belt platform, the cards to be printed continue to pass through the CCD device, which detects the relative position of the cards to be printed within the plane and transmits the position correction data to the PLC automatic control system. Under the action of the guide belt platform, the cards to be printed further reach the static elimination device to eliminate the static electricity on the cards to be printed. The guide belt platform further drives the cards to be printed to the bottom of the print nozzle of the printing module.

[0025] The PLC automatic control system matches the chip information read by the chip reader with the personnel information in the database, and selects the corresponding task in the data to be printed according to the matched personnel information and transmits it to the printing module. The nozzle control system of the printing module drives the nozzles of each color in the preset color sequence to print color by color on the card to be printed;

[0026] The printed card is driven by the belt guide platform to the card receiving device, completing the printing process.

[0027] The beneficial effects of the present invention are:

[0028] 1. The printing device of the present invention eliminates the speed limitations and human operation requirements of manually placing cards by providing a card issuing device;

[0029] 2. The printing device of the present invention is equipped with a chip reading and writing device near the card issuing device to automatically associate the card chip information with the printing task, thereby achieving accurate printing of each card information;

[0030] 3. In the printing device of the present invention, a CCD device is provided in front of the printing module to capture the position of the card on the guide belt platform, thereby correcting the printed image and accurately printing the printed image at the target position on the card;

[0031] 4. The present invention uses a negative pressure device to perform secondary ink supply, which can achieve a fast and stable printing process;

[0032] 5. In the present invention, UV curing lamps are provided between each print head to ensure that the ink dries quickly under high-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a high-speed card printing device in Example 1 of the present invention;

[0034] Figure 2 Flowchart of the working method in Example 2 of the present invention. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0036] Example 1

[0037] This embodiment provides a high-speed card printing device, such as Figure 1As shown, it includes a primary ink cartridge 1, a guide belt platform 3, a card issuing device 4, a chip reading and writing device 5, a CCD device 6, an anti-static device 7, a printing module 8, a secondary ink cartridge 9, a lifting device 11, an electrical module 12, a support frame 13 and a card collecting device 14.

[0038] The primary ink cartridge 1, negative pressure device 2, and electrical module 12 are arranged on the support frame 13. A tape guide platform 3 is provided on the top of the support frame 13. A card issuing device 4 is provided at one end of the tape guide platform 3, and a card receiving device 14 is provided at the other end. A chip reader / writer 5, a CCD device 6 (charge coupled camera), an anti-static device 7, and a lifting device 11 are provided in sequence between the card issuing device 4 and the card receiving device 14. The printing module 8 and the secondary ink cartridge 9 are provided on the lifting device 11. The printing module 8 has multiple print heads.

[0039] The number of the primary ink cartridges 1 and the secondary ink cartridges 9 is the same as the number of the print heads of the printing module 8, and each primary ink cartridge 1 is connected to each secondary ink cartridge 9 in a one-to-one correspondence, and each secondary ink cartridge 9 is connected to each print head in a one-to-one correspondence;

[0040] The electrical module 12 includes a power supply device and a PLC automation control system. The power supply device is used to supply power to the guide belt platform 3, the card issuing device 4, the chip reading and writing device 5, the CCD device 6, the static electricity removal device 7, the printing module 8, the lifting device 11 and the PLC automation control system. The PLC automation control system is communicatively connected to the guide belt platform 3, the card issuing device 4, the chip reading and writing device 5, the CCD device 6, the static electricity removal device 7, the printing module 8 and the lifting device 11.

[0041] It should be noted that in order to achieve continuous printing at high speed, an uninterrupted ink supply mechanism is required. Therefore, this embodiment adopts a double-layer ink supply mechanism to maintain smooth ink supply. When the first-level ink cartridge is out of ink and needs to be replaced, the second-level ink cartridge can continue to supply ink during the replacement of the ink cartridge, and there will be no ink interruption.

[0042] In this embodiment, the guide belt platform 3 is provided with a speed sensor, which is used to measure the transmission speed of the guide belt platform 3 and is communicatively connected to the PLC automatic control system.

[0043] In this embodiment, the high-speed card printing device further includes a negative pressure device 2. Each ink path connecting the primary ink cartridge 1 and the secondary ink cartridge 9 is connected to a negative pressure device 2. Each negative pressure device 2 is powered by a power supply and is communicatively connected to the PLC automatic control system. Specifically, the negative pressure device 2 is connected to the end of the ink path closest to the secondary ink cartridge 9.

[0044] It should be noted that by connecting each ink path to a negative pressure device, the ink supply pressure in each path can be maintained stable. Furthermore, because the ink cartridge and the printhead form a passageway, ink leakage may occur under atmospheric pressure. Therefore, this embodiment prevents ink leakage by applying pressure to the ink path through the negative pressure device. Specifically, a check valve can be provided at the front end of the negative pressure device to prevent ink from entering the negative pressure device.

[0045] In this embodiment, the secondary ink cartridge has a heating function and can perform heating maintenance on the ink.

[0046] In this embodiment, UV curing lamps are provided between the printing nozzles.

[0047] In this embodiment, a waste ink recovery tray 10 is provided on the lifting device 11, and an ink absorber pad is provided on the waste ink recovery tray 10. The waste ink absorber 10 can receive waste ink cleaned from the print head. The ink absorber pad can also absorb ink droplets splashed around due to pressure and ink remaining in the print head orifice, thereby keeping the print head clean.

[0048] In this embodiment, the card collection device 14 includes an aluminum box for stacking printed cards. A transparent viewing window can be provided on the card collection device 14 to monitor the number of cards collected and their status. When the aluminum box is full, the card collection device can be replaced with an empty one to continue collecting cards.

[0049] In this embodiment, a color mark sensor is provided in front of each print head on the printing module 8. The color mark sensor is used to read the position information of the card after detecting the color information and upload it to the printing module 8. The nozzle control system of the printing module 8 calculates the delayed inkjet time of the corresponding print head according to the position information of the card and the current transmission speed of the guide belt platform 3, and controls the inkjet timing of each print head accordingly.

[0050] It should be noted that the card moves at a constant speed on the conveyor belt platform. Manual adjustments or accidental speed reductions can cause changes in the card's speed, necessitating flexible adjustments to the printhead's inkjet timing. Therefore, this embodiment incorporates a color mark sensor. After detecting color information, the color mark sensor transmits the card's position information. The printhead control system then calculates the delay in inkjet based on the conveyor belt platform's transmission speed. To prevent misregistration due to overprinting of the four CMYK colors, the position of the color mark sensor in front of each printhead, along with the inkjet delay time, can be individually adjusted to achieve calibration and alignment.

[0051] Example 2

[0052] This embodiment provides a method for operating the high-speed card printing device described in Example 1, such as Figure 2 As shown, the specific process is:

[0053] After the device starts up and self-tests, it enters standby mode. The PLC automatic control system receives the document data to be printed and starts the belt guide platform 3. The belt guide platform 3 accelerates to a preset speed and enters a stable operation state. The PLC automatic control system controls the lifting device 11 to move, driving the printing module 8 to descend to the printing height.

[0054] After the PLC automatic control system confirms the transmission speed of the guide belt platform through data from the speed sensor, it controls the card issuing device 4 to convey the cards to be printed one by one to the guide belt platform 3. Under the action of the guide belt platform, the cards to be printed pass through the chip reader / writer 5, which reads the chip information on the cards to be printed and transmits it to the PLC automatic control system. Under the action of the guide belt platform 3, the cards to be printed continue to pass through the CCD device 6, which detects the relative position of the cards to be printed in the plane and transmits the position correction data to the PLC automatic control system. Under the action of the guide belt platform 3, the cards to be printed further reach the static elimination device 7. Under the action of the static elimination device 7, the strong electric field generated by the high voltage ionizes the surrounding air to produce a large number of positive and negative ions, which neutralize the static charge on the surface of the cards to be printed, thereby eliminating the static electricity on the cards to be printed. The guide belt platform 3 further drives the cards to be printed to the bottom of the print nozzle of the printing module 8.

[0055] The PLC automatic control system matches the chip information read by the chip reader 5 with the personnel information in the database, and selects the corresponding task in the data to be printed according to the matched personnel information and transmits it to the printing module 8. The nozzle control system of the printing module 8 drives the printing nozzles of each color in the preset color sequence to print color by color on the card to be printed;

[0056] The printed card is driven by the belt guide platform to the card receiving device, completing the printing process.

[0057] In this embodiment, each color layer is strictly aligned through color mark sensor calibration to achieve accurate overprinting.

[0058] In this embodiment, each color is immediately cured using a UV curing lamp after printing.

[0059] It should be noted that the CCD device 6 takes a photo of the card when it passes by and transmits it to the PLC automatic control system. The PLC automatic control system recognizes it through a software algorithm and analyzes the X and Y direction offset of the card based on the original set coordinates, and forms a correction package to rotate the image data to be printed in the task accordingly to adapt to the position of the card.

[0060] Those skilled in the art can make various corresponding changes and modifications based on the above technical solutions and concepts, and all of these changes and modifications should be included in the scope of protection of the claims of the present invention.

Claims

1. A high-speed card printing device, characterized in that: It includes primary ink cartridge, guide belt platform, card issuing device, chip reading and writing device, CCD device, static elimination device, printing module secondary ink cartridge, lifting device, electrical module, support frame and card receiving device; The primary ink cartridge, negative pressure device, and electrical module are arranged on the support frame, and a tape guide platform is provided on the top of the support frame; a card issuing device is provided at one end of the tape guide platform, and a card receiving device is provided at the other end; a chip reading and writing device, a CCD device, an anti-static device, and a lifting device are provided in sequence between the card issuing and receiving devices, and the printing module and secondary ink cartridge are provided on the lifting device; The printing module has a plurality of printing nozzles; The number of the primary ink cartridges and the secondary ink cartridges is the same as the number of the print heads of the printing module, and each primary ink cartridge is connected to each secondary ink cartridge in a one-to-one correspondence, and each secondary ink cartridge is connected to each print head in a one-to-one correspondence; The electrical module includes a power supply device and a PLC automation control system. The power supply device is used to power the tape guide platform, the card issuing device, the chip reading and writing device, the CCD device, the static electricity removal device, the printing module, the lifting device and the PLC automation control system. The PLC automation control system is communicatively connected to the tape guide platform, the card issuing device, the chip reading and writing device, the CCD device, the static electricity removal device, the printing module and the lifting device.

2. The high-speed card printing device according to claim 1, characterized in that: The guide belt platform is provided with a speed sensor, which is used to measure the transmission speed of the guide belt platform and is communicatively connected to the PLC automatic control system.

3. The high-speed card printing device according to claim 1, characterized in that: The high-speed card printing device also includes a negative pressure device, and each ink path connected to the primary ink cartridge and the secondary ink cartridge is connected to a negative pressure device respectively; the negative pressure device is powered by a power supply device and is communicatively connected to the PLC automatic control system.

4. The high-speed card printing device according to claim 1, characterized in that: The secondary ink cartridge has a heating function and is used for heating and maintaining the ink.

5. The high-speed card printing device according to claim 1, characterized in that: UV curing lamps are provided between each print head.

6. The high-speed card printing device according to claim 1, characterized in that: A waste ink recovery tray is provided on the lifting device, and an ink absorption pad is provided on the waste ink recovery tray.

7. The high-speed card printing device according to claim 1, characterized in that: The card receiving device includes an aluminum square box for stacking printed cards.

8. The high-speed card printing device according to claim 1, characterized in that: A color mark sensor is provided in front of each print head on the printing module. The color mark sensor is used to read the position information of the card after detecting the color information and upload it to the printing module. The print head control system of the printing module calculates the delayed inkjet time of the corresponding print head based on the position information of the card and the current transmission speed of the guide belt platform, and controls the inkjet timing of each print head accordingly.

9. A method for operating the high-speed card printing device according to any one of claims 1 to 8, characterized in that: The specific process is: After the equipment starts up and self-checks, it enters standby mode. The PLC automatic control system receives the data of the document to be printed and controls the belt guide platform to start. The belt guide platform accelerates to the preset speed and enters a stable operation state. The PLC automatic control system controls the lifting device to drive the printing module down to the printing height. After the PLC automatic control system confirms the transmission speed of the guide belt platform through data from the speed sensor, it controls the card issuing device to convey the cards to be printed one by one to the guide belt platform. Under the action of the guide belt platform, the cards to be printed pass through the chip reader / writer, which reads the chip information on the cards to be printed and transmits it to the PLC automatic control system. Under the action of the guide belt platform, the cards to be printed continue to pass through the CCD device, which detects the relative position of the cards to be printed within the plane and transmits the position correction data to the PLC automatic control system. Under the action of the guide belt platform, the cards to be printed further reach the static elimination device to eliminate the static electricity on the cards to be printed. The guide belt platform further drives the cards to be printed to the bottom of the print nozzle of the printing module. The PLC automatic control system matches the chip information read by the chip reader with the personnel information in the database, and selects the corresponding task in the data to be printed according to the matched personnel information and transmits it to the printing module. The nozzle control system of the printing module drives the nozzles of each color in the preset color sequence to print color by color on the card to be printed; The printed card is driven by the belt guide platform to the card receiving device, completing the printing process.

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