A jeans printer

Abstract

This invention belongs to the field of denim printing technology, specifically a denim printer, comprising a housing, frame, dual working platforms, printing carriage, crossbeam, crossbeam drive mechanism, three sets of magnetic levitation motor drive devices, ink supply system, computer, emergency stop switch, and power supply. The crossbeam drive mechanism is fixedly connected to the crossbeam and includes a longitudinal crossbeam ball screw drive device. This invention employs a dual-station alternating operation design. While station 1 is printing in the printing area, station 2 can simultaneously pick up and place denim pieces in a safe area. Combined with the precise drive and positioning of the longitudinal magnetic levitation drive motor and the Nidec magnetic grating, the station switching and waiting time is significantly reduced. Simultaneously, the coordinated movement of the printing carriage and the crossbeam achieves a highly efficient "horizontal printing + longitudinal connection" operation mode, saving multiple steps compared to traditional transfer printing processes. A single device can complete pattern printing, significantly improving overall production efficiency and meeting the needs of mass production.

Description

Technical Field

[0001] This invention relates to the field of denim printing technology, specifically to a denim printer. Background Technology

[0002] In the denim manufacturing industry, pattern decoration is a core element in enhancing the product's aesthetics and added value. Traditional denim pattern printing often employs a transfer printing process. This process requires first using a specialized printer to spray the pattern onto an intermediate medium such as transfer paper or transfer film. Then, adhesive powder is added using a powder-shaking device and melted using a high-temperature tungsten filament lamp. After cooling, the transfer medium is manually or mechanically cut, and finally, a heat press is used to transfer the pattern onto the surface of the denim jeans. The process is cumbersome and lengthy.

[0003] Traditional transfer printing processes have several inherent drawbacks: Firstly, they require multiple pieces of equipment, including printers, powder shakers, cutting machines, and heat presses, resulting in high equipment costs and significant space requirements. Secondly, both powder shakers and heat presses operate at high temperatures, requiring preheating and consuming substantial amounts of electricity, leading to significant energy waste. Furthermore, the use of intermediate media causes material loss, contradicting environmentally friendly production principles. Additionally, the incorporation of adhesive powder during the transfer process results in a hard, poorly breathable pattern, leading to discomfort during long-term wear. After repeated washing, issues such as adhesive peeling, fading, and pattern detachment can occur, affecting product quality and lifespan.

[0004] With the increasing demand for personalized and high-quality jeans in the consumer market, and the growing popularity of environmentally friendly production concepts, traditional transfer printing processes can no longer meet the requirements of efficient, low-consumption, and high-quality production. The industry urgently needs a jeans pattern printing equipment that can simplify the printing process, reduce equipment investment, lower energy and material consumption, while ensuring pattern clarity, color reproduction, and adhesion stability, and producing a soft-feel finished product. This would address many pain points of traditional processes and improve production efficiency and product competitiveness. Summary of the Invention

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a jeans printer that solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A jeans printer includes a housing, a frame, dual work platforms, a printing carriage, a crossbeam, a crossbeam drive mechanism, three sets of magnetic levitation motor drive devices, an ink supply system, a computer, an emergency stop switch, and a power supply. The crossbeam drive mechanism is fixedly connected to the crossbeam and includes a longitudinal crossbeam ball screw drive device, which is driven by the bottom of the crossbeam. The three sets of magnetic levitation motor drive devices include a crossbeam magnetic levitation drive motor and a longitudinal magnetic levitation drive motor. The crossbeam magnetic levitation drive motor is fixedly installed at one end of the crossbeam and driven by the printing carriage, driving the printing carriage to move laterally along the crossbeam. The longitudinal magnetic levitation drive motor is fixed to the frame and driven by the dual work platforms, driving the dual work platforms to move longitudinally. The dual work platforms include station 1 and station 2. Station 1 has a station 1 tooling platform fixedly installed on its top, and station 2 has a station 2 tooling platform fixedly installed on its top. Each station has two tooling platforms integrally formed with the dual work platforms, forming a total of four. The system comprises two workstations; the ink supply system includes an ink tank, which is connected to the printing carriage via an ink supply pipeline for supplying ink to the printing carriage; the computer is electrically connected to the printing carriage and the magnetic levitation motor drive device via a data cable for controlling the operation of the equipment; the emergency stop switch and power supply are both fixed on the outside of the machine body, the emergency stop switch is electrically connected to the main control circuit of the equipment, and the power supply is electrically connected to each electrical component of the equipment; the longitudinal magnetic levitation drive motor is equipped with a Nidec brand magnetic grating, which is signal-connected to the longitudinal magnetic levitation drive motor for positioning of the dual work platforms and the printing carriage; the printing carriage directly sprays special water-based paint ink for denim fabric, and combined with the alternating operation of the two workstations, it enables simultaneous material changing in a safe area behind the machine while one workstation is printing in the printing area, and the ink is cured at high temperature after printing.

[0010] Furthermore, a piezoelectric printhead, model MH5320, is fixedly installed inside the printing carriage. Each printhead is connected to the ink path inside the printing carriage, and multiple printheads are installed in parallel at the bottom of the printing carriage. The printing accuracy of a single printhead is 600 DPI, and the printing accuracy can reach 1800 DPI when multiple printheads are used in combination. The printhead also has high-jet characteristics, which are suitable for the fabric texture of denim, avoiding printing defects caused by fabric fuzz.

[0011] Furthermore, the ink tank of the ink supply system stores water-based paint ink specifically for fabrics. The top of the ink tank is equipped with an ink filling port, and the bottom is equipped with an ink outlet. The ink outlet is connected to the ink chamber of the print head of the printing carriage through an ink supply pipeline. An ink pump is installed on the ink supply pipeline and is electrically connected to a computer. The computer controls the ink supply volume of the ink pump to ensure minimal ink waste and that the ink meets environmental protection standards. The printed pattern has high color saturation and reproduction.

[0012] Furthermore, the crossbeam is a hollow rectangular structure with a transverse guide rail inside. A slider is provided on the back of the printing carriage, and the slider is slidably connected to the transverse guide rail. The magnetic levitation drive motor of the crossbeam is suspended on the track of the carriage, so that the magnetic levitation drive motor of the crossbeam drives the printing carriage to move smoothly along the transverse guide rail, ensuring the transverse printing accuracy.

[0013] Furthermore, the longitudinal beam ball screw drive device includes a ball screw and a screw nut. The two ends of the ball screw are fixed to the frame through bearing seats. The screw nut is fixedly connected to the bottom of the beam. The drive motor of the longitudinal beam ball screw drive device is electrically connected to a computer. The computer controls the drive motor to drive the ball screw to rotate, thereby driving the beam to move longitudinally. The moving distance matches the width of the printed 1PASS, ensuring accurate longitudinal printing.

[0014] Furthermore, station 1 and station 2 are located on opposite sides of the dual working platform, with a distance of no less than 50cm between them, forming a safe operating space. When station 1 moves to the printing area, station 2 is located in the safe area behind the machine. Workers can complete the picking and loading of denim jeans on the tooling platform of station 2. After station 1 finishes printing, the longitudinal magnetic levitation drive motor drives the dual working platform to move, so that station 2 moves to the printing area and station 1 moves to the safe area, realizing the alternating continuous operation of the dual workstations.

[0015] Furthermore, the computer is equipped with dedicated printing control software, which can import pattern files and set parameters such as printing accuracy and printing speed. At the same time, it can receive positioning signals from the magnetic grating in real time and adjust the operating parameters of the magnetic levitation motor drive device to ensure that the movement trajectory of the printing carriage and the dual workstations is consistent with the set pattern.

[0016] Furthermore, the ink tank is equipped with a liquid level sensor, which is electrically connected to the computer. When the remaining ink level is lower than a preset value, the liquid level sensor transmits the data to the computer, which then issues an alarm signal and displays the remaining ink level, reminding staff to add ink in time to avoid printing interruptions due to insufficient ink.

[0017] Furthermore, the emergency stop switch is a red mushroom-shaped button, prominently mounted on the front operating area of ​​the machine body. After pressing the emergency stop switch, the main control circuit of the equipment is immediately powered off, the moving parts of the printing carriage and the magnetic levitation motor drive device stop running, and the power supply to the ink pump is cut off to prevent ink leakage and ensure the safety of the equipment and operators.

[0018] Furthermore, the power supply is an AC regulated power supply with an input voltage of 220V, which is converted to 24V DC after conversion. The output voltage is adapted to the electrical components of the equipment. The power supply is equipped with overload protection circuit and short circuit protection circuit. When the circuit current exceeds the rated value or a short circuit occurs, the power supply automatically cuts off the output to avoid damage to the equipment circuit and extend the service life of the equipment.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the present invention provides a jeans printer with the following advantages:

[0021] This invention employs a dual-station alternating operation design. While station 1 is printing in the printing area, station 2 can simultaneously pick up and place jeans in a safe area. Combined with the precise drive positioning of the longitudinal magnetic levitation motor and the Nidec magnetic grating, this significantly reduces station switching and waiting time. Simultaneously, the coordinated movement of the printing carriage and the crossbeam achieves a highly efficient "horizontal printing + longitudinal connection" operation mode. Compared to traditional transfer printing processes, this eliminates multiple steps, allowing a single device to complete pattern printing, significantly improving overall production efficiency and meeting the needs of mass production.

[0022] This invention utilizes the MH5320 piezoelectric printhead mounted on a printing carriage. Each printhead boasts a high precision of 600 DPI, while multiple printheads combined achieve 1800 DPI. Combined with fabric-specific water-based inks, the printed patterns exhibit high color saturation and fidelity. Furthermore, the ink adheres directly to the denim fabric, and after high-temperature curing, no adhesive powder is added. The finished product has a soft feel, excellent breathability, and is resistant to fading and peeling after multiple washes. Compared to the rigidity and easy delamination issues of traditional transfer printing processes, this significantly improves product quality and wearing comfort. Attached Figure Description

[0023] Figure 1 This is a front view structural diagram of the jeans printer of the present invention;

[0024] Figure 2 This is a top view of the structure of the jeans printer of the present invention;

[0025] Figure 3 This is a schematic diagram of the right-side structure of the jeans printer of the present invention;

[0026] Figure 4 This is a schematic diagram of the left-side structure of the jeans printer of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the jeans printer of the present invention.

[0028] In the diagram: 1. Printing carriage; 2. Crossbeam; 3. Crossbeam magnetic levitation drive motor; 4. Station 1; 5. Station 2; 6. Computer; 7. Ink tank; 8. Machine body; 9. Emergency stop switch; 10. Longitudinal magnetic levitation drive motor; 11. Station 1 fixture platform; 12. Station 2 fixture platform; 13. Longitudinal crossbeam ball screw drive device; 14. Power supply. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1-5 As shown, an embodiment of the present invention provides a jeans printer, including a housing, a frame, dual working platforms, a printing carriage 1, a crossbeam 2, a crossbeam drive mechanism, three sets of magnetic levitation motor drive devices, an ink supply system, a computer 6, an emergency stop switch 9, and a power supply 14. The crossbeam drive mechanism is fixedly connected to the crossbeam 2, and includes a longitudinal crossbeam ball screw drive device 13, which is driven by the bottom of the crossbeam 2. The three sets of magnetic levitation motor drive devices include a crossbeam magnetic levitation drive motor 3 and a longitudinal magnetic levitation drive motor 10. The crossbeam magnetic levitation drive motor 3 is fixedly installed at one end of the crossbeam 2 and driven by the printing carriage 1, for driving the printing carriage 1 to move laterally along the crossbeam 2. The longitudinal magnetic levitation drive motor 10 is fixed on the frame and driven by the dual working platforms, for driving the dual working platforms to move longitudinally.

[0032] Drive and positioning system linkage

[0033] The magnetic levitation drive motor 3, printing carriage 1, and crossbeam 2 are linked: The magnetic levitation drive motor 3 is fixed to one end of the crossbeam 2, and its output shaft is connected to the track of the printing carriage 1 via gears. The top slider of the printing carriage 1 is slidably connected to the internal transverse guide rail of the crossbeam 2. The linkage function is as follows: When the motor is driven, the gear and rack transmission, in conjunction with the guide rail, enables the printing carriage 1 to move smoothly laterally along the crossbeam 2, ensuring accurate lateral printing trajectory of the printhead and avoiding pattern misalignment caused by offset. This guarantees printing accuracy of 600 DPI for a single printhead and 1800 DPI for multiple printheads combined.

[0034] Longitudinal magnetic levitation drive motor 10 - Dual working platforms - Nidec magnetic grating linkage: The longitudinal magnetic levitation drive motor 10 is fixed to the frame and connected to the dual working platforms via transmission. The magnetic grating is connected to the motor via signal. The linkage function is as follows: the motor drives the dual working platforms, including station 1 (4) and station 2 (5), to move longitudinally. The magnetic grating provides real-time feedback of positioning data, ensuring that the station positioning error does not exceed 0.002mm. This accurately achieves the alternation of "printing at station 1 - preparing at station 2," while simultaneously preventing collisions with equipment components during station movement.

[0035] The longitudinal beam ball screw drive device 13-beam 2 linkage: The screw nut of the longitudinal beam ball screw drive device 13 is fixed to the bottom of the beam 2, and both ends of the ball screw are fixed to the frame through bearing seats. The linkage function is as follows: the device drive motor is controlled by the computer 6 to drive the ball screw to rotate, which is converted into longitudinal linear motion of the beam 2 through the screw nut. The moving distance is precisely matched with the width of the printing 1PASS, ensuring that the longitudinal connection of the printing carriage 1 is printed without omissions or duplicates, and ensuring the integrity of the pattern.

[0036] The dual work platform includes workstation 4 (No. 1) and workstation 5 (No. 2). Workstation 4 has a workstation tooling platform 11 fixedly installed on its top, and workstation 5 has a workstation tooling platform 12 fixedly installed on its top. Each workstation has two tooling platforms, which are integrally formed with the dual work platform, forming a total of four workstations. The ink supply system includes an ink tank 7, which is connected to the printing carriage 1 through an ink supply pipeline and is used to supply ink to the printing carriage 1.

[0037] Ink supply and printing system linkage

[0038] Ink Tank 7 - Ink Supply Line - Print Cart 1 - Ink Pump - Computer 6 Linkage: The ink tank 7 is connected to the printhead ink chamber of the print carriage 1 via the ink supply line, and the ink pump on the line is electrically connected to the computer 6. The linkage function is as follows: The computer 6 sets the ink supply parameters according to the printing speed and pattern complexity, controls the start / stop of the ink pump and the ink supply volume, ensuring that the fabric-specific water-based ink in the ink tank 7 is delivered to the printhead as needed. This avoids excessive ink waste and ink interruption due to insufficient ink supply. Simultaneously, combined with the high-jet characteristics of the printhead, it ensures that the ink is evenly applied to the gaps in the denim fabric, improving color saturation.

[0039] The printing carriage 1 is linked with the longitudinal beam ball screw drive device 13: the printing carriage 1 moves longitudinally along with the beam 2, driven by the longitudinal beam ball screw drive device 13, and the printing carriage 1 itself can move laterally. The linkage effect is: the two work together to achieve a compound movement of "lateral printing 1PASS + longitudinal movement 1PASS width" of the printhead, forming a complete pattern printing trajectory, covering the denim printing area, without the need for manual adjustment of the printhead position, improving printing efficiency, and enabling batch processing of 2 pairs of denim jeans at the same time in dual workstations;

[0040] The computer 6 is electrically connected to the printing carriage 1 and the magnetic levitation motor drive device via a data cable, and is used to control the operation of the equipment; the emergency stop switch 9 and the power supply 14 are both fixed on the outside of the machine body 8. The emergency stop switch 9 is electrically connected to the main control circuit of the equipment, and the power supply 14 is electrically connected to each electrical component of the equipment; the longitudinal magnetic levitation drive motor 10 is equipped with a Nidec brand magnetic grid, and the magnetic grid is connected to the longitudinal magnetic levitation drive motor 10 for positioning of the dual working platforms and the printing carriage 1;

[0041] Workstation and safety system linkage

[0042] The dual working platforms, station 1 (station 4) and station 2 (station 5), are linked by the longitudinal magnetic levitation drive motor 10. Stations 1 (station 4) and 2 (station 5) are located on opposite sides of the dual working platforms, with a distance of no less than 50cm between them, and both are connected to the longitudinal magnetic levitation drive motor 10. The linkage function is as follows: when the motor drives the platform to change position, while station 1 (station 4) is working in the printing area, station 2 (station 5) simultaneously moves to a safe area behind the machine. Workers can then pick up and put away jeans on the tooling platform 12 at station 2. After station 1 (station 4) finishes printing, the platform quickly changes position to achieve continuous operation, which not only improves equipment utilization but also avoids worker contact with the printing parts during operation, ensuring safety.

[0043] Emergency Stop Switch 9 - Main Control Circuit - Printing Cart 1 - Magnetic Levitation Motor Drive - Ink Pump Interlock: The emergency stop switch 9 is fixed to the outside of the machine body 8 and electrically connected to the main control circuit of the equipment. The main control circuit controls the power supply to the printing carriage 1, the magnetic levitation motor drive, and the ink pump. The interlock function is as follows: When the emergency stop switch 9 is pressed, the main control circuit is immediately de-energized, the printing carriage 1 stops moving, the printhead stops printing, the magnetic levitation motor stops driving, and the ink pump shuts down. This prevents the pattern from being scrapped or parts from being damaged due to abnormal conditions such as fabric misalignment or equipment failure, and also avoids ink leakage that could pollute the equipment and the environment.

[0044] The printing carriage 1 directly sprays water-based ink for denim fabric onto the jeans. Combined with the alternating work of two stations, one station can print in the printing area while the other station can simultaneously change materials in a safe area behind the machine. After printing, the ink is cured at high temperature.

[0045] Control and execution system linkage

[0046] Computer 6 - Magnetic Levitation Motor Drive Device - Magnetic Grating Linkage: Computer 6 is electrically connected to the crossbeam magnetic levitation drive motor 3 and the longitudinal magnetic levitation drive motor 10 via data cables, and receives positioning signals from the magnetic grating in real time. The linkage function is as follows: Computer 6 adjusts the motor speed and direction according to the imported pattern parameters, and simultaneously corrects the motor operating parameters based on the magnetic grating positioning data, ensuring that the lateral movement speed of the printing carriage 1 and the longitudinal movement distance of the crossbeam 2 are precisely matched with the pattern requirements. For example, it automatically adjusts the motor drive frequency according to the pattern resolution to ensure a high-precision printing effect of 1800 DPI.

[0047] Computer 6 - Ink Tank 7 Level Sensor Linkage: The level sensor inside the ink tank 7 is electrically connected to the computer 6. The linkage function is as follows: the sensor monitors the ink level in real time. When the level falls below a preset value, it sends a signal to the computer 6. The computer 6 immediately issues an alarm and displays the remaining ink level, reminding staff to replenish ink through the ink refill port on top of the ink tank 7 in time. This prevents printing interruptions due to ink depletion and ensures the continuity of mass production.

[0048] The working principle of this jeans printer is as follows: After the power supply 14 is turned on, the printing pattern is imported through the computer 6 and parameters such as printing accuracy and speed are set. The worker puts the jeans on the fixture platform 11 of station 1 (station 4) and the fixture platform 12 of station 2 (station 5). After the equipment is started, the longitudinal magnetic levitation drive motor 10 drives the two work platforms to move, moving station 1 (station 4) to the printing area. The matching Nidec brand magnetic grid provides real-time feedback positioning signals to ensure that the positioning error of station 1 (station 4) does not exceed 0.002mm. The computer 6 controls the ink tank 7 of the ink supply system to supply ink to the printing carriage 1 through the ink supply pipeline. The ink pump precisely adjusts the ink supply volume according to the printing demand. At the same time, the crossbeam magnetic levitation drive motor 3 drives the printing carriage 1 to move along the transverse guide rail of the crossbeam 2, and the longitudinal crossbeam ball screw drive device 13 drives the printing carriage 1 to move along the transverse guide rail of the crossbeam 2. The crossbeam 2 moves longitudinally, and the MH5320 piezoelectric printhead in the printing carriage 1 directly sprays water-based ink for the fabric onto the jeans in a "horizontal printing 1PASS + longitudinal movement 1PASS width" manner. During printing at station 1 4, the worker can prepare to pick up and put down the jeans at station 2 5 in the safe area behind the machine. After printing at station 1 4 is completed, the longitudinal magnetic levitation drive motor 10 drives the dual working platforms to switch positions. Station 2 5 moves to the printing area to continue printing, while station 1 4 moves to the safe area to pick up and load materials, realizing continuous alternating operation. After high-temperature color fixing, the printed jeans form a pattern with full color that is not easy to peel off. If any abnormality occurs during the process, the emergency stop switch 9 on the machine body 8 can be pressed to cut off the main control circuit, stop the operation of all moving parts, and turn off the ink pump.

[0049] like Figure 1-5As shown, in some embodiments, a piezoelectric printhead from RICOH Corporation of Japan, model MH5320, is fixedly installed inside the printing carriage 1. Each printhead is connected to the internal ink path of the printing carriage 1, and multiple printheads are installed in parallel at the bottom of the printing carriage 1. A single printhead achieves a printing resolution of 600 DPI, and when multiple printheads are used in combination, the printing resolution can reach 1800 DPI. The printhead also features high-resolution printing characteristics, making it suitable for the fuzzy texture of denim fabric and preventing printing defects caused by fabric fuzz obstruction. The printing carriage 1, through its design of "fixed internal installation + ink path connection + parallel bottom layout," connects with the RICOH MH5320... The 20-model piezoelectric printheads provide precise fit: The printheads are fixed inside the printing carriage 1, ensuring stable and unwavering position during printing. Each printhead is directly connected to the ink path inside the printing carriage 1, allowing for rapid reception of fabric-specific water-based inks from the ink supply system, avoiding ink supply delays or interruptions caused by excessively long ink paths. Multiple printheads are installed in parallel at the bottom of the printing carriage 1, fully utilizing its installation space and enhancing printing accuracy through synergy. A single printhead's basic accuracy of 600 DPI meets the needs of standard patterns, while a combination of multiple printheads achieves a high accuracy of 1800 DPI, enabling clear printing of delicate patterns. Simultaneously, the printheads' high-jet characteristics adapt to the texture of denim fabric, allowing ink to penetrate the fabric fibers and adhere precisely to the fabric itself. This effectively prevents print defects such as missed or blurred prints caused by fabric fibers obstructing the printhead's ink outlet, ultimately ensuring uniform color and complete detail in the denim print, aligning with the equipment's core design goal of "direct printing + high-quality finished products."

[0050] like Figure 1-5As shown, in some embodiments, the ink tank 7 of the ink supply system stores fabric-specific water-based paint ink. The ink tank 7 has an ink filling port at the top and an ink outlet at the bottom. The ink outlet is connected to the printhead ink chamber of the printing carriage 1 through an ink supply pipeline. An ink pump is installed on the ink supply pipeline and is electrically connected to a computer 6. The computer 6 controls the ink supply volume of the ink pump to ensure minimal ink waste and that the ink meets environmental standards, resulting in high color saturation and fidelity of the printed pattern. The ink supply system, with the ink tank 7 as its core, achieves the functional goals of "precise ink supply, environmentally friendly and efficient, and high-quality printing" through multi-structure collaboration: the ink tank 7 stores fabric-specific water-based paint ink, and its top ink filling port facilitates quick ink replenishment by staff, avoiding printing interruptions caused by complex ink replenishment operations; the bottom ink outlet is directly connected to the printhead ink chamber of the printing carriage 1 through an ink supply pipeline, creating a short-path ink supply channel and reducing ink residue and waste during the transportation process. Meanwhile, the ink pump on the ink supply line is electrically connected to computer 6, forming an intelligent ink supply mechanism of "computer control - ink pump execution." Computer 6 can adjust the ink supply volume of the ink pump in real time according to the printing speed and pattern complexity, avoiding ink overflow and waste caused by excessive ink supply, and preventing ink interruption and pattern color loss caused by insufficient ink supply. In addition, the stored fabric-specific water-based paint ink meets environmental protection standards, which can reduce pollutant emissions during the printing process. Moreover, this ink is highly compatible with the MH5320 printhead of the printing carriage 1, which can give full play to the high-jet characteristics of the printhead, so that the ink is evenly attached to the denim fabric, ultimately achieving a high color saturation and accurate reproduction effect of the printed pattern, which meets the design requirements of "environmentally friendly and low-consumption + high-quality finished product" of the equipment.

[0051] like Figure 1-5As shown, in some embodiments, the crossbeam 2 is a hollow rectangular structure with a transverse guide rail inside. A slider is provided on the back of the printing carriage 1, and the slider is slidably connected to the transverse guide rail. The magnetic levitation drive motor 3 of the crossbeam is suspended on the track of the carriage 1, so that the magnetic levitation drive motor 3 of the crossbeam drives the printing carriage 1 to move smoothly along the transverse guide rail, ensuring the transverse printing accuracy. The hollow rectangular structure of the crossbeam 2 not only ensures the structural strength but also reduces its own weight and driving load, and provides space for the installation of internal components. The transverse guide rail inside it forms a sliding fit with the slider on the top of the printing carriage 1, providing stable guidance for the transverse movement of the printing carriage 1, avoiding deviation or jamming during movement, and ensuring the straightness of the printing trajectory from a structural perspective. Meanwhile, the crossbeam magnetic levitation drive motor 3 is suspended on the track of the carriage 1, constructing a collaborative transmission system of "motor drive - gear and rack transmission - guide rail guidance": the motor output power is converted into the horizontal linear motion of the printing carriage 1 through the gear and rack. With the sliding limit of the guide rail and the slider, the printing carriage 1 moves horizontally along the crossbeam 2 smoothly without shaking, and the moving speed and displacement can be precisely controlled. Ultimately, it is ensured that the printhead on the printing carriage 1 can accurately print according to the set trajectory, avoiding pattern misalignment and blurring caused by lateral movement deviation, fully guaranteeing the horizontal printing accuracy of the equipment, and meeting the printing requirements of high-resolution patterns such as 1800DPI.

[0052] like Figure 1-5As shown, in some embodiments, the longitudinal beam ball screw drive device 13 includes a ball screw and a screw nut. The two ends of the ball screw are fixed to the frame through bearing seats. The screw nut is fixedly connected to the bottom of the beam 2. The drive motor of the longitudinal beam ball screw drive device 13 is electrically connected to the computer 6. The computer 6 controls the drive motor to drive the ball screw to rotate, thereby driving the beam 2 to move longitudinally. The moving distance matches the width of the printed 1PASS, ensuring accurate longitudinal printing. The longitudinal beam ball screw drive device 13 achieves accurate longitudinal movement of the beam 2 and ensures printing quality through the design of "component fixing - transmission adaptation - intelligent control". Its core component, the ball screw, is fixed to the frame through bearing seats at both ends, which ensures the stability of the ball screw during rotation and provides a fixed reference for the longitudinal movement of the beam 2. The screw nut is fixedly connected to the bottom of the beam 2, establishing a transmission relationship of "ball screw - screw nut", which converts the rotational motion of the screw into the longitudinal linear motion of the beam 2, resulting in high transmission efficiency and small displacement error. Meanwhile, the drive motor of the device is electrically connected to the computer 6, forming an intelligent linkage system of "computer control - motor drive - ball screw transmission": the computer 6 can accurately control the speed and rotation angle of the drive motor according to printing parameters such as pattern size and 1PASS printing width, and then control the rotation amount of the ball screw, so that the longitudinal movement distance of the crossbeam 2 is perfectly matched with the printing 1PASS width, avoiding problems such as missing prints, reprints or pattern misalignment in the longitudinal printing, and ultimately ensuring that the printhead is accurately connected in the longitudinal direction in the cycle of "horizontal printing 1PASS + vertical movement 1PASS width", forming a complete and continuous pattern, which meets the needs of the equipment for high-resolution 1800DPI printing.

[0053] like Figure 1-5As shown, in some embodiments, station 1 (4) and station 2 (5) are located on opposite sides of the dual working platform, with a distance of not less than 50cm between them, forming a safe operating space. When station 1 (4) moves to the printing area, station 2 (5) is located in the safe area behind the machine. Workers can pick up and load denim jeans on the tooling platform 12 at station 2. After station 1 (4) finishes printing, the longitudinal magnetic levitation drive motor 10 drives the dual working platform to move, causing station 2 (5) to move to the printing area and station 1 (4) to move to the safe area, achieving continuous alternating operation of the two stations. Station 1 (4) and station 2 (5) adopt a layout design of "distribution on both sides + safe distance + alternating movement". The core function is to achieve the dual goals of continuous operation and operational safety: the two stations are located on opposite sides of the dual working platform, with a distance of not less than 50cm. This distance can effectively isolate the printing area and the operating area, forming an independent safe operating space, avoiding collisions between workers and moving parts such as the printing carriage 1 and the crossbeam 2 when picking up and placing denim jeans, thus ensuring personnel safety. Simultaneously, the two workstations are linked with the dual working platforms via a longitudinal magnetic levitation drive motor 10, forming an "alternating operation" mechanism. When workstation 1 (4) moves to the printing area to perform the printing task under the drive of the longitudinal magnetic levitation drive motor 10, workstation 2 (5) simultaneously moves to the safe area behind the machine, where workers can complete the material handling and loading preparation for the jeans on the tooling platform 12 of workstation 2. After workstation 1 (4) finishes printing, the longitudinal magnetic levitation drive motor 10 drives the dual working platforms to switch positions again, and workstation 2 (5) moves to the printing area to continue printing, while workstation 1 (4) moves to the safe area to pick up materials and clamp new jeans. This design runs the "printing operation" and "workstation preparation" processes in parallel, completely eliminating the idle time of the equipment waiting for workstation preparation, greatly improving the overall operating efficiency of the equipment. At the same time, through physical spacing and area division, it takes into account operational safety and meets the production needs of batch and continuous printing of jeans.

[0054] like Figure 1-5As shown, in some embodiments, the computer 6 is equipped with dedicated printing control software, which can import pattern files and set parameters such as printing precision and printing speed. Simultaneously, it receives positioning signals from the magnetic grating in real time and adjusts the operating parameters of the magnetic levitation motor drive device to ensure that the movement trajectory of the printing carriage 1 and the dual workstations is consistent with the set pattern. As the "control center" of the equipment, the computer 6, through dedicated printing control software and multi-structure linkage, achieves intelligent and precise control of the printing process. Its core functions are reflected in three aspects: First, it has parameter setting and file processing functions, can import external pattern files, and flexibly set key parameters such as printing precision (e.g., 600 DPI / 1800 DPI) and printing speed according to printing needs, providing personalized control solutions for printing different patterns; Second, ... A closed-loop control system of "signal reception-parameter adjustment" is constructed to receive positioning signals from the dual workstations 4 and 5 and the printing carriage 1 in real time from the Nidec brand magnetic grating feedback, accurately determining whether the current component position is consistent with the set trajectory; thirdly, the linkage magnetic levitation motor drive device executes adjustment commands—if the positioning signal shows that the printing carriage 1 moves laterally or the dual workstations move longitudinally, the computer 6 can immediately adjust the speed and direction of the crossbeam magnetic levitation drive motor 3, or the operating parameters of the longitudinal magnetic levitation drive motor 10, to correct the movement trajectory of the printing carriage 1 and the dual workstations, ensuring that the printhead printing path is completely matched with the set pattern, avoiding pattern misalignment and deformation caused by trajectory deviation, and ultimately ensuring the integrity and accuracy of the denim pattern, meeting the core requirements of high-resolution and high-quality printing of the equipment.

[0055] like Figure 1-5 As shown, in some embodiments, the ink tank 7 is equipped with a liquid level sensor, which is electrically connected to the computer 6. When the ink level is lower than a preset value, the computer 6 issues an alarm signal and displays the remaining ink level, reminding the staff to add ink in time to avoid printing interruptions due to insufficient ink. The ink tank 7 forms an intelligent linkage system of "monitoring-feedback-early warning" with the computer 6 through the built-in liquid level sensor. Its core function is to ensure continuous ink supply and avoid printing interruptions. The liquid level sensor inside the ink tank 7 can monitor the remaining amount of fabric-specific water-based paint ink in the tank in real time. The sensor is electrically connected to the computer 6 and can convert the real-time liquid level data into... The electrical signal is transmitted to computer 6. When the remaining ink level is detected to be lower than the minimum threshold preset by computer 6, computer 6 immediately triggers a dual warning mechanism. On the one hand, it issues an alarm signal such as an audible and visual prompt. On the other hand, it displays the specific remaining ink level on the operation interface, intuitively reminding the staff to replenish ink in time through the ink filling port on the top of the ink tank 7. This linkage design can effectively avoid ink supply interruption caused by ink depletion, prevent the denim pattern from being missing color or scrapped due to sudden ink interruption during printing, and at the same time avoid the tedious operation of staff frequently checking the remaining ink level, ensuring the continuity of batch printing operations and meeting the needs of efficient and stable production.

[0056] like Figure 1-5 As shown, in some embodiments, the emergency stop switch 9 is a red mushroom-shaped button, prominently installed on the front operating area of ​​the machine body 8. After pressing the emergency stop switch 9, the main control circuit of the equipment is immediately powered off, the printing carriage 1 and the moving parts of the magnetic levitation motor drive device stop running, and the ink pump power supply is cut off to prevent ink leakage and ensure the safety of the equipment and operators. The emergency stop switch 9, through "eye-catching structural design + full system power failure linkage", builds a safety protection barrier for the equipment in emergency situations. Its core functions are reflected in three aspects: First, the structural design is adapted to emergency operation needs - the red mushroom-shaped button is prominently installed on the front operating area of ​​the machine body 8. The red color has a strong visual warning, and the mushroom shape makes it easy to press quickly, even in an emergency. In chaotic situations, staff can quickly locate and trigger the switch, shortening emergency response time. Secondly, the main control circuit is linked to achieve a system-wide power outage—after pressing the switch, the main control circuit immediately cuts off the power supply, directly affecting all moving parts such as the printing carriage 1 and the magnetic levitation motor drive, causing them to stop instantly. This prevents safety accidents such as collisions and crushing caused by continuous movement of parts, and also prevents pattern scrapping due to uncontrolled movement of parts. Thirdly, the ink pump power supply is simultaneously cut off—at the same time as the moving parts stop, the ink pump power supply is cut off, preventing ink leakage from the printhead due to continuous ink supply from the ink pump. This reduces ink waste, prevents ink stains from contaminating the inside of the equipment, and prevents leaked ink from contacting operators and causing safety hazards. The overall design, through "rapid triggering + multi-system linkage power outage," provides reliable safety protection for sudden anomalies during equipment operation, such as fabric shifting and component jamming, in line with the equipment's "safety first" design principle.

[0057] like Figure 1-5As shown, in some embodiments, the power supply 14 is an AC regulated power supply with an input voltage of 220V and an output voltage adapted to the various electrical components of the equipment. The power supply 14 has internal overload protection and short-circuit protection circuits. When the circuit current exceeds the rated value or a short circuit occurs, the power supply 14 automatically cuts off the output to prevent damage to the equipment circuit and extend the equipment's service life. After conversion to 24V DC, the output voltage is adapted to the various electrical components of the equipment. The power supply 14, as the "power core" of the equipment, provides safe and stable power support to the equipment through a "voltage regulation and adaptation + dual protection" design. Its core function is reflected in three aspects: First, adapting to the equipment's power requirements—adopting an AC regulated power supply design with a universal 220V input voltage, it can be directly connected to conventional industrial / civilian power supply circuits, while the output voltage is adjusted according to the requirements of the equipment. The system features three main design elements: First, it precisely matches the voltage requirements of various electrical components such as the printing carriage 1, magnetic levitation motor drive unit, computer 6, and ink pump, ensuring stable voltage for each component and preventing operational abnormalities caused by voltage fluctuations, such as unstable motor speed or decreased printhead printing accuracy. Second, it incorporates a built-in overload protection circuit—when a component malfunctions, such as motor jamming causing the circuit current to exceed the rated value of the power supply 14, the overload protection circuit immediately triggers, automatically cutting off the power output to prevent excessive current from burning out core components such as the printing carriage 1 drive module and the computer 6 control motherboard. Third, it is equipped with a short-circuit protection circuit—if internal wiring aging or insulation damage causes a short circuit, the short-circuit protection circuit can respond instantly, cutting off the power supply circuit to prevent the high temperatures generated by the short circuit from damaging the equipment casing 8, crossbeam 2, and other structures, or causing more serious safety accidents. The overall design ensures efficient operation of all components under stable voltage while mitigating the risk of circuit failure through a dual protection mechanism, effectively reducing equipment maintenance frequency, extending service life, and meeting the production needs of long-term continuous operation.

[0058] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A jeans printer, comprising a housing, a frame, dual working platforms, a printing carriage (1), a crossbeam (2), a crossbeam drive mechanism, three sets of magnetic levitation motor drive devices, an ink supply system, a computer (6), an emergency stop switch (9), and a power supply (14), characterized in that, The beam drive mechanism is fixedly connected to the beam (2), and the beam drive mechanism includes a longitudinal beam ball screw drive device (13), which is connected to the bottom of the beam (2) via transmission. The three sets of magnetic levitation motor drive devices include a beam magnetic levitation drive motor (3) and a longitudinal magnetic levitation drive motor (10). The beam magnetic levitation drive motor (3) is fixedly installed at one end of the beam (2) and is connected to the printing carriage (1) via transmission. It is used to drive the printing carriage (1) to move laterally along the beam (2). The longitudinal magnetic levitation drive motor (10) is fixed on the frame and is connected to the dual working platform via transmission. It is used to drive the dual working platform to move longitudinally. The dual working platform includes station 1 (4) and station 2 (5). Station 1 (4) is fixedly installed on the top of station 1 (4), and station 2 (5) is fixedly installed on the top of station 2 (5). Each station has 2 tooling platforms and is integrally formed with the dual working platform, forming a total of 4 Each workstation; the ink supply system includes an ink tank (7), which is connected to the printing carriage (1) through an ink supply pipeline and is used to supply ink to the printing carriage (1); the computer (6) is electrically connected to the printing carriage (1) and the magnetic levitation motor drive device through a data cable and is used to control the operation of the equipment; the emergency stop switch (9) and the power supply (14) are both fixed on the outside of the machine body (8), the emergency stop switch (9) is electrically connected to the main control circuit of the equipment, and the power supply (14) is electrically connected to each electrical component of the equipment; the longitudinal magnetic levitation drive motor (10) is equipped with a Nidec brand magnetic grid, and the magnetic grid is connected to the longitudinal magnetic levitation drive motor (10) for positioning of the dual work platform and the printing carriage (1); the printing carriage (1) directly sprays special water-based paint ink for denim fabric, and combined with the alternating work of the two workstations, it realizes that when one workstation is printing in the printing area, the other workstation is simultaneously changing materials in the safe area behind the machine, and the ink is fixed at high temperature after printing.

2. The jeans printer according to claim 1, characterized in that, The printing carriage (1) is equipped with a piezoelectric printhead, model MH5320. Each printhead is connected to the ink path inside the printing carriage (1). Multiple printheads are installed in parallel at the bottom of the printing carriage (1). The printing accuracy of a single printhead is 600 DPI. When multiple printheads are used in combination, the printing accuracy can reach 1800 DPI. The printhead has high-jet characteristics and is suitable for the fabric of denim, avoiding printing defects caused by the fabric covering.

3. A jeans printer according to claim 1, characterized in that, The ink tank (7) of the ink supply system stores special water-based paint ink for fabric. The top of the ink tank (7) is equipped with an ink filling port and the bottom is equipped with an ink outlet. The ink outlet is connected to the ink chamber of the print head of the printing carriage (1) through the ink supply pipeline. An ink pump is installed on the ink supply pipeline. The ink pump is electrically connected to the computer (6). The computer (6) controls the ink supply of the ink pump to ensure that the ink waste is small and the ink meets environmental protection standards. The printed pattern has high color saturation and reproduction.

4. A jeans printer according to claim 1, characterized in that, The crossbeam (2) is a hollow rectangular structure with a transverse guide rail inside. The printing carriage (1) has a slider on its back, which is slidably connected to the transverse guide rail. The magnetic levitation drive motor (3) of the crossbeam is suspended on the track of the carriage (1), so that the magnetic levitation drive motor (3) of the crossbeam drives the printing carriage (1) to move smoothly along the transverse guide rail, ensuring the transverse printing accuracy.

5. A jeans printer according to claim 1, characterized in that, The longitudinal beam ball screw drive device (13) includes a ball screw and a screw nut. The two ends of the ball screw are fixed to the frame through bearing seats. The screw nut is fixedly connected to the bottom of the beam (2). The drive motor of the longitudinal beam ball screw drive device (13) is electrically connected to the computer (6). The computer (6) controls the drive motor to drive the ball screw to rotate, thereby driving the beam (2) to move longitudinally. The moving distance matches the width of the 1PASS print, ensuring accurate longitudinal printing.

6. A jeans printer according to claim 1, characterized in that, The No. 1 workstation (4) and No. 2 workstation (5) are located on both sides of the double working platform, with a distance of not less than 50cm between the two workstations to form a safe operating space. When the No. 1 workstation (4) moves to the printing area, the No. 2 workstation (5) is located in the safe area behind the machine. Workers can complete the picking and loading of denim on the tooling platform (12) of the No. 2 workstation. After the No. 1 workstation (4) finishes printing, the longitudinal magnetic levitation drive motor (10) drives the double working platform to move, so that the No. 2 workstation (5) moves to the printing area and the No. 1 workstation (4) moves to the safe area, realizing the alternating continuous operation of the double workstations.

7. A jeans printer according to claim 1, characterized in that, The computer (6) is equipped with dedicated printing control software, which can import pattern files and set parameters such as printing accuracy and printing speed. At the same time, it can receive positioning signals from magnetic grating feedback in real time, adjust the operating parameters of the magnetic levitation motor drive device, and ensure that the movement trajectory of the printing carriage (1) and the dual workstation is consistent with the set pattern.

8. A jeans printer according to claim 1, characterized in that, The ink tank (7) is equipped with a liquid level sensor, which is electrically connected to the computer (6). When the ink level is lower than the preset value, the liquid level sensor transmits the data to the computer (6). The computer (6) issues an alarm signal and displays the ink level, reminding the staff to add ink in time to avoid printing interruption due to insufficient ink.

9. A jeans printer according to claim 1, characterized in that, The emergency stop switch (9) is a red mushroom-shaped button that is prominently installed on the front operating area of ​​the machine body (8). After pressing the emergency stop switch (9), the main control circuit of the equipment is immediately de-energized, the printing carriage (1) and the moving parts of the magnetic levitation motor drive device stop running, and the power supply to the ink pump is cut off to prevent ink leakage and ensure the safety of the equipment and operators.

10. A jeans printer according to claim 1, characterized in that, The power supply (14) is an AC regulated power supply with an input voltage of 220V, which is converted to 24V DC after conversion. The output voltage is adapted to the electrical components of the equipment. The power supply (14) is equipped with an overload protection circuit and a short circuit protection circuit. When the circuit current exceeds the rated value or a short circuit occurs, the power supply (14) automatically cuts off the output to avoid damage to the equipment circuit and extend the service life of the equipment.

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