Driving board card for SG1024 nozzle

Abstract

The utility model provides a drive board card for an SG1024 nozzle, and relates to the technical field of piezoelectric ink-jet printers, and the drive board card comprises a power supply module which is used for providing a power supply for the drive board card; and the main control module is used for connecting and controlling the data transmission module, the storage module, the communication module, the serial port module, the encoder module, the nozzle interface module and the nozzle heating module in the driving board card. The SG1024 nozzle driving circuit has remarkable advantages in the aspects of compatibility, signal driving precision, high-frequency driving performance and the like, and provides powerful guarantee for efficient and stable operation of the SG1024 nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric inkjet printers, in particular to a driving board card for an SG1024 nozzle. Background Art

[0002] Piezoelectric inkjet printing technology, with its non-contact nature, enables the printing of high-resolution images and fine patterns. Consequently, it has found widespread application in fields such as advertising, packaging printing, textile printing, and electronic circuit printing. In piezoelectric inkjet printing systems, the inkjet print head and its corresponding driver board have a direct impact on print quality and efficiency.

[0003] The SG1024 printhead, a high-performance inkjet printhead, offers significant advantages, including high resolution, high ejection frequency, and precise droplet volume control. However, to fully leverage the SG1024's exceptional performance, it must be equipped with a matching driver board. Currently, traditional printhead driver boards have numerous limitations, making it difficult to meet the specific requirements of the SG1024 printhead in terms of printhead compatibility, signal drive accuracy, and high-frequency drive performance.

[0004] Therefore, there is an urgent need for a driver board specifically designed for the SG1024 printhead to solve the problems of traditional driver boards in terms of compatibility, signal driving accuracy, and high-frequency driving performance, thereby promoting the widespread application and further development of inkjet printing technology based on the SG1024 printhead in various industries. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems existing in the prior art in terms of compatibility, signal driving accuracy and high-frequency driving performance of the driving board.

[0006] In order to solve the above technical problems, the utility model provides a driver board for the SG1024 nozzle, comprising:

[0007] Power module, used to provide power to the driver board;

[0008] The main control module is used to connect and control the data transmission module, storage module, communication module, serial port module, encoder module, nozzle interface module and nozzle heating module in the driver board;

[0009] The data transmission module is used for image data transmission between the host computer and the driver board;

[0010] The storage module is used for caching image data;

[0011] The communication module is used to connect to the pulse power supply board;

[0012] The serial port module is used to drive the board to connect the photoelectric signal and the synchronization signal;

[0013] The encoder module is used for position detection and speed detection;

[0014] The nozzle interface module is used to connect the SG1024 nozzle;

[0015] The nozzle heating module is used to meet the heating requirements of the SG1024 nozzle.

[0016] In one embodiment of the present invention, the driver board is a 4-layer circuit board, comprising:

[0017] The top layer of the driver board is equipped with the MCU chip of the main control module, located in the center; the memory chips of the storage module are located on both sides of the MCU chip; the communication module, serial port module, encoder module, nozzle interface module and nozzle heating module are arranged around the MCU chip of the main control module and distributed along the edge of the top layer of the driver board;

[0018] The second layer of the driver board is the ground distribution layer, and the ground ports of the above modules are all connected on this layer;

[0019] The third layer of the driver board is the power line distribution layer, and the power ports of the above modules are all connected at this layer;

[0020] The fourth layer of the driver board is the remaining external circuit distribution layer of the above module, and the remaining circuit ports are connected at this layer.

[0021] In one embodiment of the present invention, the MCU chip used in the main control module is an FPGA chip, specifically model EP3C16Q240C8N.

[0022] In one embodiment of the present invention, a fixing hole is designed on each of the four corners of the driving board.

[0023] In one embodiment of the present invention, the storage module is composed of two MT48LC32M16A2 memory chips.

[0024] In one embodiment of the present invention, the data transmission module is a combination connection of a W5300 chip and an Ethernet port.

[0025] In one embodiment of the present invention, the communication module is 485 communication, and its core chip is SN75176BDR.

[0026] In one embodiment of the present invention, the main control chip used in the nozzle heating module is a 32-bit single-chip microcomputer chip, specifically model M451LE6AE.

[0027] In one embodiment of the present invention, the nozzle interface module is connected using an LVDS four-way differential line driver.

[0028] In one embodiment of the present invention, the power module is connected to an external power port, and the power ports are connected in parallel with multiple capacitors to achieve filtering.

[0029] The above technical solution of the utility model has the following advantages compared with the prior art:

[0030] The utility model proposes a driver board for the SG1024 nozzle, which significantly improves the compatibility and performance of the driver board by integrating an optimized power module, a main control module and multiple special function modules. Its data transmission module is exquisitely designed, which not only ensures the high-speed and stable transmission of image data, but also simplifies the hardware circuit structure and improves the data transmission efficiency. The storage module effectively responds to the characteristics of large image data volume and high transmission requirements in inkjet printing, and ensures the continuity and integrity of the image data. The nozzle interface module adopts low-voltage differential signal transmission, which greatly reduces the bit error rate of image transmission and significantly enhances the anti-interference ability. In particular, the nozzle heating module, through the independent control chip design, effectively reduces the burden on the main control chip, and further improves the stability and reliability of the system. In summary, the utility model shows significant advantages in compatibility, signal driving accuracy and high-frequency driving performance, providing a strong guarantee for the efficient and stable operation of the SG1024 nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on the specific embodiments of the present invention and in conjunction with the accompanying drawings, wherein

[0032] Figure 1 This is a schematic diagram of the architecture of a driver board for the SG1024 printhead provided by the present invention;

[0033] Figure 2 This is a schematic diagram of the principle of a driver board for the SG1024 nozzle of the utility model;

[0034] Figure 3 This is a circuit structure diagram of the voltage conversion circuit of the utility model;

[0035] Figure 4 This is a circuit structure diagram of the network port communication circuit of the utility model;

[0036] Figure 5 This is a circuit structure diagram of the nozzle drive circuit of the utility model;

[0037] Figure 6It is a circuit structure diagram of the nozzle heating circuit of the utility model.

[0038] Explanation of the accompanying drawings in the specification: 1. Power module; 2. Main control module; 3. Data transmission module; 4. Storage module; 5. Communication module; 6. Serial port module; 7. Encoder module; 8. Nozzle interface module; 9. Nozzle heating module. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0040] In order to solve the problems of existing driver boards in terms of compatibility, signal driving accuracy and high-frequency driving performance, refer to Figure 1 As shown, the utility model proposes a driver board for the SG1024 nozzle, including:

[0041] Power module 1, used to provide power to the driver board;

[0042] The main control module 2 is used to connect and control the data transmission module 3, storage module 4, communication module 5, serial port module 6, encoder module 7, nozzle interface module 8 and nozzle heating module 9 in the driver board;

[0043] Among them, the data transmission module 3 is used for image data transmission between the host computer and the driver board; the storage module 4 is used for caching image data; the communication module 5 is used to connect the pulse power supply board; the serial port module 6 is used to connect the driver board to the photoelectric signal and synchronization signal; the encoder module 7 is used for position detection and speed detection; the nozzle interface module 8 is used to connect the SG1024 nozzle; the nozzle heating module 9 is used to meet the heating requirements of the SG1024 nozzle.

[0044] It can be seen from the above technical solution that the utility model provides a driver board for the SG1024 nozzle, which integrates a power module, a main control module and multiple functional modules to comprehensively improve compatibility, signal driving accuracy and high-frequency driving performance. Among them, the data transmission module adopts an efficient design to ensure that the image data is transmitted stably and quickly between the host computer and the driver board. The hardware circuit is simple and meets the requirements of high-speed transmission. The storage module is optimized for inkjet printing characteristics, effectively caches image data, and ensures transmission stability. The nozzle interface module greatly reduces the image transmission bit error rate and significantly improves the anti-interference ability by receiving low-voltage differential signals. What is particularly outstanding is that the nozzle heating module adopts an independent control chip, which effectively reduces the burden on the main control chip, and the system reliability and stability are significantly enhanced. This comprehensive technical solution not only solves many shortcomings of the existing driver board, but also provides efficient and accurate drive control for the SG1024 nozzle. It is suitable for the field of high-precision inkjet printing and shows excellent technical performance and application potential.

[0045] In this embodiment, power module 1 is used to provide power to the driver board. The power module is connected to an external power port, and multiple capacitors are connected in parallel to each power port for filtering. Specifically, power module 1 converts the external 24V voltage into the 5V, -5V, 3.3V, 2.5V, and 1.2V voltages used by the driver board. The voltage conversion chip used is RT8096CHGJ5.

[0046] In this embodiment, the main control module 2 is used to connect and control the data transmission module 3, storage module 4, communication module 5, serial port module 6, encoder module 7, nozzle interface module 8 and nozzle heating module 9 in the driver board. Specifically, the MCU chip used in the main control module is an FPGA chip, specifically the EP3C16Q240C8N, which is used to process and transmit image data. The chip has four built-in phase-locked loops and 504kb of embedded memory. The image data is input to the I / O elements inside the chip through the chip's I / O pins. The input data will first be stored in the input buffer area, which is generally implemented by a part of the embedded memory. The pre-processed data will be transmitted to the logic processing unit composed of logic elements, logic array blocks and embedded multipliers for corresponding processing. During the data processing process, the intermediate results and final results are temporarily stored in the embedded memory. The processed data is transmitted to the corresponding module via the internal interconnection network.

[0047] In this embodiment, the data transmission module 3 is used for image data transmission between the host computer and the driver board. Specifically, the data transmission module 3 is a combination connection of the W5300 chip and the Ethernet port.

[0048] In this embodiment, storage module 4 is used to cache image data. Specifically, storage module 4 uses two MT48LC32M16A2 SDRAM chips for image data caching. These memory chips act as data buffers, providing data buffering and coordination between devices of different speeds.

[0049] In this embodiment, the communication module 5 is used to connect to the pulse power supply board and adopts 485 communication. Its core chip is SN75176BDR, which supports bidirectional data communication on the multi-point bus transmission line. The chip integrates a three-state differential line driver and a differential input line receiver, which can convert single-ended digital signals into differential signals and transmit them through balanced transmission lines.

[0050] In this embodiment, the serial port module 6 is used to drive the board to connect the photoelectric signal and the synchronization signal.

[0051] In this embodiment, the encoder module 7 is used for position detection and speed detection. The encoder module 7 generates a clock, a latch signal, an address signal, a chip select signal, a heating signal, and a line feed signal and sends them to the nozzle interface module 8.

[0052] In this embodiment, the printhead interface module 8 is used to connect to the SG1024 printhead. It utilizes an LVDS quad-differential line driver to receive low-voltage differential signals and reduce the bit error rate (BER) during image transmission. Specifically, the 60-pin input interface connector is connected to the main control module 2 via an LVDS module, which receives input signals for driving the SG1024 printhead. Of these 60 input drive signals, 16 pins are used to receive LVDS signals indicating the status of the eight rows of nozzles in the SG1024 printhead.

[0053] In this embodiment, the nozzle heating module 9 is used to meet the heating requirements of the SG1024 nozzle. The main control chip of the nozzle heating module 9 is a 32-bit single-chip microcomputer chip, specifically the M451LE6AE chip. At the same time, an amplifier chip is used to amplify the heating information. The independent control chip reduces the resource utilization of the main control chip.

[0054] In addition, the driver board of the present invention is designed with a fixing hole on each of the four corners for fixing the driver board in the device.

[0055] In this embodiment, the driver board is a 4-layer circuit board, including: the top layer of the driver board is provided with the MCU chip of the main control module 2, located in the center; the storage chip of the storage module 4 is located on both sides of the MCU chip; the communication module 5, the serial port module 6, the encoder module 7, the nozzle interface module 8 and the nozzle heating module 9 are arranged around the MCU chip of the main control module 2, and distributed along the edge of the top layer of the driver board. The second layer of the driver board is the ground distribution layer, and the ground ports of the above modules are all connected at this layer. The third layer of the driver board is the power line distribution layer, and the power ports of the above modules are all connected at this layer. The fourth layer of the driver board is the remaining external circuit distribution layer of the above modules, and the remaining circuit ports are all connected at this layer.

[0056] Reference Figure 2 As shown, the utility model relates to a driver board for the SG1024 nozzle, and its working principle is described as follows:

[0057] The host computer interface serves as the input source of image data and is responsible for transferring the image data of the host computer to the data transmission module 3. In this module, the image data undergoes write and read operations and completes the task of transmitting the drive waveform parameters and image data. The storage module 4 is responsible for the temporary storage of image data and controls the acquisition of image data and the transmission of differential signals. The nozzle interface module 8 synchronously performs the write, read and status judgment of image data, and then converts the serial data into parallel data and outputs it to the SG1024 nozzle. Overall, the data transmission module 3 is interconnected with the nozzle interface module 8 through the storage module 4, and together realizes the data transmission, caching and final output functions to the nozzle. The storage module 4 plays a bridging role in this architecture and is responsible for the caching and control acquisition of image data. After processing the data, the nozzle interface module 8 uses the status judgment module to realize the conversion of serial data to parallel data, and finally drives the SG1024 nozzle to perform the printing task.

[0058] The technical solution of the present utility model is described below in conjunction with a specific circuit structure.

[0059] Reference Figure 3 As shown, each voltage conversion circuit includes a power conversion chip and its peripheral circuits. The 24V to 5V circuit power conversion chip U2 is the TPS54202DDCR; the 5V to -5V circuit power conversion chip U3 is the LM2611AMF; and the 5V to 3.3V, 2.5V, and 1.2V circuit power conversion chips U4, U5, and U6 are the RT8096CHGJ5. The peripheral circuits include multiple resistors, capacitors, and inductors. The VIN port of the power conversion chip is connected to the input voltage, and by connecting multiple capacitors in parallel, AC signals can be filtered.

[0060] Reference Figure 4As shown, the network port communication circuit uses an FPGA to control the protocol processing chip to achieve Ethernet data transmission. The data transmission chip U15 selects the Ethernet chip W5300. The Ethernet chip W5300 uses an external 25MHz active crystal oscillator with normal operating voltages of 3.3V and 1.8V. Connecting the BIT16EN pin to a high level of 3.3V allows the FPGA to configure the chip in 16-bit data bus mode. Because the W5300 operates in internal PHY mode, the four configuration signals TEST_MODE0-TEST_MODE3 must be grounded, and the configuration signals OP_MODE0, OP_MODE1, and OP_MODE2 must be set to a low level to achieve effective operation. The network port connector is an RJ-45 connector HR911105A, with a data transmission rate of 100MHz. Multiple capacitors are connected in parallel at the voltage input to achieve a filtering effect on the AC signal.

[0061] Reference Figure 5 As shown, the printhead drive circuit uses three DS90C031™ chips to generate 12 sets of serial differential signals: eight serial differential signals for nozzle control, two clock signals, and two transmit control signals. The LVDS chip's data transmission rate reaches up to 77.7MHz. C1_CLK and C1_LAT correspond to the clock and transmit control signals for the serial differential signals of nozzle rows 1 through 4, while C2_CLK and C2_LAT correspond to the clock and transmit control signals for nozzle rows 5 through 8. The input connector uses a 60-pin socket strip, providing interfaces for eight rows of printhead drive pulse signals, nozzle control data, and power supply.

[0062] Reference Figure 6 As shown, the nozzle heating circuit uses a 32-bit single-chip microcontroller (MCU), model M451LE6AE, as the main control chip. The input THB signal is amplified by the OPA2335AID operational amplifier into the ADC0 signal input to the MCU. The 32-bit MCU chip and the FPGA chip are connected via the MCU_TX and MCU_RX pins. A fuse is connected in series at the power input to provide overload protection. Multiple capacitors are connected in parallel at the voltage input to filter the AC signal.

[0063] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A driver board for SG1024 nozzle, characterized in that: include: Power module, used to provide power to the driver board; The main control module is used to connect and control the data transmission module, storage module, communication module, serial port module, encoder module, nozzle interface module and nozzle heating module in the driver board; The data transmission module is used for image data transmission between the host computer and the driver board; The storage module is used for caching image data; The communication module is used to connect to the pulse power supply board; The serial port module is used to drive the board to connect the photoelectric signal and the synchronization signal; The encoder module is used for position detection and speed detection; The nozzle interface module is used to connect the SG1024 nozzle; The nozzle heating module is used to meet the heating requirements of the SG1024 nozzle.

2. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The driver board is a 4-layer circuit board, including: The top layer of the driver board is equipped with the MCU chip of the main control module, located in the center; the memory chips of the storage module are located on both sides of the MCU chip; the communication module, serial port module, encoder module, nozzle interface module and nozzle heating module are arranged around the MCU chip of the main control module and distributed along the edge of the top layer of the driver board; The second layer of the driver board is the ground distribution layer, and the ground ports of the above modules are all connected on this layer; The third layer of the driver board is the power line distribution layer, and the power ports of the above modules are all connected at this layer; The fourth layer of the driver board is the remaining external circuit distribution layer of the above module, and the remaining circuit ports are connected at this layer.

3. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The MCU chip used in the main control module is an FPGA chip, specifically the EP3C16Q240C8N.

4. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The driving board is provided with a fixing hole at each of the four corners.

5. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The storage module is composed of two MT48LC32M16A2 storage chips.

6. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The data transmission module is a combination connection of the W5300 chip and the Ethernet port.

7. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The communication module is 485 communication, and its core chip is SN75176BDR.

8. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The main control chip used in the nozzle heating module is a 32-bit single-chip microcomputer chip, specifically the M451LE6AE model.

9. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The nozzle interface module is connected using an LVDS four-way differential line driver.

10. The driver board for the SG1024 nozzle according to claim 1, characterized in that: The power supply module is connected to an external power supply port, and the power supply port is connected in parallel with multiple capacitors to achieve filtering.

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