Medium temperature curing whole-body 3D printing quartz stone forming equipment

Abstract

The utility model discloses a kind of medium-temperature solidification through-body 3D printing quartz stone forming equipment, comprising: forming solidification machine platform, the lower end surface of the forming solidification machine platform is equipped with solidification box, medium-temperature solidification and surface treatment integration innovative equipment is cooperated by heating plate and temperature control sensor built-in in solidification box, curing temperature is accurately controlled in 220 ℃ medium-temperature interval, while using deep ultraviolet and ozone generator to replace traditional grinding and polishing, curing and surface treatment are simultaneously completed in airtight space, avoid dust pollution and surface mechanical damage, realize the surface effect of through-body uniform, simplify process flow and improve environmental protection, multi-material precision printing and driving control technology two-photon polymerization printing head integrated air pump pressurized mixing chamber, cooperate with the storage tank, feed pump and three-head material pipe on feeding frame, can synchronously transport photocuring resin, different granularity quartz sand and functional doping material, realize the accurate proportioning and uniform mixing of multi-component material.

Description

Technical Field

[0001] This utility model belongs to the field of quartz stone molding technology, specifically relating to a medium-temperature curing whole-body 3D printing quartz stone molding equipment. Background Technology

[0002] Quartz stone is widely used in architectural decoration, kitchen and bathroom countertops, and other fields due to its high strength, corrosion resistance, and aesthetic appeal. Traditional quartz stone manufacturing often employs molding processes, which are complex, have long production cycles, and incur high mold costs. With the development of 3D printing technology, its application in quartz stone manufacturing has gradually gained attention; however, existing 3D printing quartz stone molding equipment still has many shortcomings.

[0003] In existing technologies, the curing process of 3D printed quartz stone often requires high temperatures and consumes a lot of energy after molding, and it is difficult to guarantee the uniformity of curing, which affects the overall performance of the quartz stone. At the same time, the surface treatment of printed quartz stone usually relies on processes such as grinding and polishing, which are not only cumbersome and inefficient, but also generate a lot of dust that pollutes the environment and causes certain damage to the surface of the quartz stone, making it difficult to achieve a uniform surface effect throughout. Utility Model Content

[0004] The purpose of this invention is to provide a medium-temperature curing, whole-body 3D printing quartz stone molding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a medium-temperature curing, solid-body 3D printing quartz stone molding device, comprising:

[0006] The molding and curing machine has a curing box on its lower end face for curing the printed quartz stone in a closed space and using deep ultraviolet light and ozone to replace grinding and polishing. The curing box is equipped with a lifting support platform for lifting and curing the printed workpiece through a through groove. The molding and curing machine has a curing sealing plate on both sides that can extend and penetrate into the through groove for sealing.

[0007] The printing box frame has a printing drive mechanism on its inner side that allows the print head to move up and down and move horizontally and vertically for printing. The bottom end of the printing drive mechanism has a two-photon polymerization print head with a built-in mixing chamber. The outer side of the printing box frame has multiple storage tanks for storing and conveying photocurable resin, quartz sand of different particle sizes and functional dopants to the two-photon polymerization print head for printing.

[0008] Preferably, the inner two side walls of the curing chamber are respectively provided with an ultraviolet light source lamp for providing ultraviolet light to cooperate with the photocuring resin and a heating plate for heating the inside of the curing chamber to a medium temperature. The bottom of one side wall of the curing chamber is provided with a temperature control sensor for real-time monitoring of the temperature inside the curing chamber, so as to maintain the curing temperature in the medium temperature range.

[0009] Preferably, an ozone generator is provided on the outer side of the curing chamber, which works in conjunction with an ultraviolet light source to decompose organic residues on the surface of the workpiece using the strong oxidizing properties of ozone. The ozone generator is penetrated through a pipe to the inner side of the curing chamber. Cylinders are symmetrically arranged at the bottom of the curing chamber, and a lifting support platform is fixed horizontally at the top of cylinders.

[0010] Preferably, both sides of the through groove are provided with an inner cavity for the curing sealing plate to extend and retract from the molding and curing machine into the through groove for sealing. The curing sealing plate passes through the inner cavity into the through groove to seal the curing box. The curing box is provided with cylinders on both sides of the outside, and cylinders are provided with connecting blocks that are connected to the bottom side of one end of the curing sealing plate.

[0011] Preferably, the printing drive mechanism includes cylinder three symmetrically arranged at the top of the inside of the printing box frame. The bottom of cylinder three is provided with a lifting plate, and a motor A is provided in a longitudinal groove opened in the middle of the lower end face of the lifting plate. The shaft end of motor A is driven by a lead screw A, and the lead screw A drives a longitudinal block that slides in a direction in the longitudinal groove. The bottom end of the longitudinal block is provided with a transverse plate that moves the print head laterally. A motor B is provided on one side of the lower end face of the transverse plate, and the shaft end of motor B is driven by a lead screw B, and the lead screw B drives a transverse block laterally.

[0012] Preferably, the upper end of the dual-photon polymerization printhead is provided with an air pump to pressurize the built-in mixing chamber, and the dual-photon polymerization printhead is fixed to the front end of the horizontal block, and the horizontal block slides in the guide groove provided at the bottom of the horizontal plate through the limiting slider at the top end. A feeding elastic hose that can move horizontally and vertically without affecting the feeding is connected to one side of the dual-photon polymerization printhead.

[0013] Preferably, a feeding rack is provided on one side of the printing box frame, and multiple storage tanks are located at the upper end of the feeding rack. A feeding pump is provided at the lower end of the feeding rack, and the feeding pump is connected to a three-headed material pipe through a pipeline. The three-headed material pipe is connected to each storage tank to simultaneously output multiple raw materials to the built-in mixing chamber of the dual-photon polymerization printhead.

[0014] Preferably, the pipe at the discharge end of the feed pump passes through one side of the printing box frame and is connected to one end of the feed elastic hose, and a support block with a through hole is movably sleeved on the feed elastic hose, and the support block is fixed to one side of the bottom of the horizontal plate.

[0015] Preferably, the printing box frame has a control panel with a built-in PLC controller on one side of its exterior. The control panel is connected to the pump, cylinder, motor, sensor, ultraviolet light source, heating plate, and ozone generator in the molding equipment to dynamically regulate the temperature inside the sealed curing chamber to a medium temperature range, and to allow the workpiece to undergo deep ultraviolet and ozone treatment inside the curing chamber.

[0016] Compared with existing technologies, the technical effects and advantages of this utility model are as follows: This medium-temperature curing, full-body 3D printing quartz stone molding equipment...

[0017] The innovative integrated equipment for medium-temperature curing and surface treatment uses a heating plate and temperature control sensor built into the curing chamber to precisely control the curing temperature within the medium-temperature range of 220℃, which significantly reduces energy consumption compared to traditional high-temperature curing processes. At the same time, it uses deep ultraviolet light and an ozone generator to replace traditional grinding and polishing, completing curing and surface treatment simultaneously in a closed space, avoiding dust pollution and mechanical damage to the surface, achieving a uniform surface effect throughout, simplifying the process and improving environmental friendliness.

[0018] The multi-material precision printing and drive control technology integrates a dual-photon polymerization printhead with an air pump pressurized mixing chamber. Together with the material storage tank, feed pump, and three-head feed pipe on the feed rack, it can simultaneously deliver photocurable resin, quartz sand of different particle sizes, and functional dopants, achieving precise proportioning and uniform mixing of multi-component materials. The printing drive mechanism, through cylinder three, lead screw A / B, and horizontal and vertical slider structure, enables flexible and precise movement of the printhead in three-dimensional space, significantly improving printing accuracy and forming efficiency, and solving the problems of uneven material mixing and coarse printing path control in existing equipment.

[0019] The intelligent sealed curing and dynamic temperature control system, consisting of a sealing plate and a cylinder, ensures a sealed space within the curing chamber when the lifting platform is in operation. Combined with a PLC controller (control panel), it provides coordinated control of the heating plate, UV light source, ozone generator, and various drive components, enabling dynamic regulation of curing temperature, UV irradiation intensity, and ozone concentration. A temperature sensor provides real-time data feedback and optimizes the heating strategy, ensuring a uniform and stable curing process and preventing variations in quartz stone performance due to temperature fluctuations. This overall enhances the automation level of the equipment and the stability of the finished product quality. Attached Figure Description

[0020] Figure 1 This is a front view of the quartz stone printing molding equipment of this utility model;

[0021] Figure 2 This is a diagram showing the closed state of the curing chamber of the quartz stone printing molding equipment of this utility model;

[0022] Figure 3 This is a bottom view of the printing drive mechanism of this utility model;

[0023] Figure 4 This is a top view of the molding and curing platform of this utility model.

[0024] In the diagram: 1. Curing machine; 2. Curing chamber; 3. Through groove; 4. Lifting support platform; 5. Curing sealing plate; 6. Printing box frame; 7. Printing drive mechanism; 8. Dual-photon polymerization print head; 9. Storage tank; 10. Ultraviolet light source lamp; 11. Temperature control sensor; 12. Heating plate; 13. Ozone generator; 14. Inner cavity; 15. Cylinder 1; 16. Connecting block; 17. Cylinder 2; 18. Cylinder 3; 19. Lifting plate; 20. Motor A; 21. Lead screw A; 22. Longitudinal block; 23. Transverse plate; 24. Motor B; 25. Lead screw B; 26. Transverse block; 27. Air pump; 28. Feeding flexible hose; 29. ​​Feeding rack; 30. Feeding pump; 31. Three-head feed pipe; 32. Control panel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a medium-temperature curing, whole-body 3D printing quartz stone molding equipment, comprising:

[0027] The curing machine 1, serving as the main load-bearing structure of the equipment, is welded from high-strength steel. Its lower end is tightly connected to the curing chamber 2 via bolts to ensure stability. The curing chamber 2 is used to cure the printed quartz stone in a sealed space and utilizes deep ultraviolet light and ozone to replace grinding and polishing. Its chamber body is made of double-layer stainless steel with a heat-insulating layer to reduce heat loss. The curing chamber 2 has a lifting support platform 4 for lifting and curing the printed workpiece via a through-slot 3. The surface of the lifting support platform 4 is treated with anti-slip material to prevent the workpiece from sliding during lifting. The curing machine 1 has retractable curing sealing plates 5 on both sides that extend into the through-slot 3 for sealing. The edges of the curing sealing plates 5 are equipped with high-temperature resistant sealing strips to ensure a good seal.

[0028] The printing frame 6 adopts a frame structure to provide stable support for the printing process. Inside the printing frame 6, a printing drive mechanism 7 is installed to raise and lower the print head and move it horizontally and vertically for printing. The moving parts of the printing drive mechanism 7 are connected by high-precision linear guides to ensure smooth and accurate movement. At the bottom of the printing drive mechanism 7, a two-photon polymerization print head 8 with a built-in mixing chamber is slidably mounted. The mixing chamber contains stirring blades for thoroughly mixing the materials. On the outside of the printing frame 6, multiple storage tanks 9 are provided for storing and conveying photocurable resin, quartz sand of different particle sizes, and functional dopants to the two-photon polymerization print head 8 for printing. Liquid level sensors are installed on the storage tanks 9 to monitor the remaining material level in real time.

[0029] The two-photon excitation principle of the two-photon polymerization printhead 8: Utilizing the two-photon absorption effect, the photocurable resin extruded through the nozzle (orifice diameter adjustable from 0.3 to 0.8 mm) at the front of the printhead undergoes a double-bond cross-linking reaction (curing depth 50-100 μm / layer) under the irradiation of 254 nm deep ultraviolet light emitted by the ultraviolet light source lamp 10, achieving rapid interlayer curing and bonding. Compared to single-photon curing, two-photon polymerization can precisely control the curing area, avoiding accidental curing of resin in unprinted areas, and supports printing of fine structures as small as 0.1 mm (such as imitation stone textures).

[0030] The mixing chamber of the two-photon polymerization printhead 8 is equipped with spiral guide vanes (not shown). The material is pressurized by the air pump 27 (0.3-0.5MPa) to form turbulence, which ensures that the quartz sand is uniformly dispersed in the resin and avoids stratification defects caused by sedimentation.

[0031] The inner wall of the mixing chamber can be coated with Teflon to prevent resin adhesion and ensure the stability of the composition during continuous printing.

[0032] The curing chamber 2 has UV light source lamps 10 on its two inner side walls for providing UV light to the UV-curing resin, and heating plates 12 for heating the interior of the curing chamber 2 to a medium temperature. The UV light source lamps 10 are arranged in an array to ensure uniform illumination. The heating plates 12 use ceramic heating technology, which has high heating efficiency and uniform temperature distribution. Furthermore, a temperature control sensor 11 is located at the bottom of one inner side wall of the curing chamber to monitor the temperature inside the curing chamber in real time, maintaining the curing temperature within the medium temperature range of 220 degrees Celsius. The temperature control sensor 11 feeds back the real-time temperature data to the control system so that the working state of the heating plates 12 can be adjusted in a timely manner.

[0033] An ozone generator 13 is provided on the outer side of the curing chamber 2, which works in conjunction with the ultraviolet light source lamp 10 to decompose organic residues on the surface of the workpiece using the strong oxidizing properties of ozone. The ozone generator 13 is penetrated into the inner side of the curing chamber 2 through a pipe, and a solenoid valve is installed on the pipe to control the amount of ozone introduced. Cylinders 17 are symmetrically arranged at the bottom of the inside of the curing chamber 2, and the lifting platform 4 is fixed horizontally at the top of cylinders 17. The movement of cylinders 17 is precisely controlled by the control system to achieve smooth lifting of the lifting platform 4.

[0034] Both sides of the through groove 3 are provided with an inner cavity 14 for the curing sealing plate 5 to extend and retract from the molding and curing machine 1 into the through groove 3 for sealing. The inner cavity 14 is provided with a guide slide rail to ensure smooth extension and retraction of the curing sealing plate 5. The curing sealing plate 5 passes through the inner cavity 14 into the through groove 3 to seal the curing box 2. The curing box 2 is provided with cylinders 15 on both sides of the outside. Each cylinder 15 is provided with a connecting block 16 connected to the bottom side of one end of the curing sealing plate 5. The cylinders 15 drive the connecting block 16, thereby driving the curing sealing plate 5 to move.

[0035] The printing drive mechanism 7 includes cylinders 18 symmetrically arranged at the top of the inside of the printing box frame 6. The cylinder body of cylinder 18 is fixed to the printing box frame 6 by a bracket. A lifting plate 19 is provided at the bottom of cylinder 18. The lifting plate 19 is made of lightweight and high-strength aluminum alloy. A motor A20 is provided in a longitudinal groove in the middle of the lower end face of the lifting plate 19. The motor A20 is connected to the lead screw A21 through a coupling. The lead screw A21 drives a longitudinal block 22 that slides in the longitudinal groove. The longitudinal block 22 is connected to the lead screw A21 through a nut pair. A transverse plate 23 is provided at the bottom of the longitudinal block 22 to move the print head laterally. The transverse plate 23 is connected to the longitudinal block 22 through bolts. A motor B24 is provided on one side of the lower end face of the transverse plate 23. The motor B24 is connected to the lead screw B25 through a synchronous belt transmission mechanism. A transverse block 26 drives the lead screw B25 laterally. The transverse block 26 is connected to the lead screw B25 through a nut pair.

[0036] The bottom of the lifting plate 19 is provided with stabilizing grooves on both sides of the longitudinal groove, and a connecting stabilizing slider is slidably provided in each stabilizing groove. The bottom end of the connecting stabilizing slider is fixed to both sides of the upper surface of the transverse plate 23, so that the transverse plate remains stable during longitudinal sliding.

[0037] In the longitudinal groove opened in the middle of the lower end face of the lifting plate 19, the motor A20 is fixed to the end of the groove by the motor seat, and the rotating shaft is connected to one end of the lead screw A21 by the flexible coupling. The other end of the lead screw is fixed to the other end of the groove by the bearing seat. The bottom surface of the longitudinal block 22 is machined with a nut pair that cooperates with the lead screw A21. At the same time, linear bearings are embedded on both sides and slide with the guide rail on the inner wall of the longitudinal groove to achieve precise movement of ±150mm in the Y-axis direction.

[0038] The bottom end of the longitudinal block 22 is connected to the top surface of the transverse plate 23 via a T-bolt, allowing for fine-tuning in the transverse direction. The motor B24 on one side of the lower end face of the transverse plate 23 is fixed by a flange, and the shaft is connected to the lead screw B25. The lead screw passes through the nut pair of the transverse block 26. The limiting slider at the top of the transverse block is embedded in the T-shaped guide groove (groove width 20mm, depth 15mm) at the bottom of the transverse plate, achieving ±200mm sliding in the X-axis direction.

[0039] The dual-photon polymerization printhead 8 is equipped with an air pump 27 at its upper end to pressurize the built-in mixing chamber. The air pump 27 is connected to the mixing chamber through an air pipe, and a pressure regulating valve is installed on the air pipe. The dual-photon polymerization printhead 8 is fixed to the front end of the transverse block 26 and is secured with bolts to ensure a firm connection. The transverse block 26 slides in a guide groove at the bottom of the transverse plate 23 via a limiting slider at its top. A wear-resistant liner is installed in the guide groove to reduce friction. A flexible feeding hose 28 is connected to one side of the dual-photon polymerization printhead 8, which can move horizontally and vertically without affecting the feeding. The flexible feeding hose 28 is made of wear-resistant and corrosion-resistant materials.

[0040] A feeding rack 29 is provided on one side of the printing box frame 6. The feeding rack 29 adopts a modular design for easy installation and maintenance. Multiple storage tanks 9 are located at the upper end of the feeding rack 29. A feeding pump 30 is provided at the lower end of the feeding rack 29. The feeding pump 30 is a positive displacement pump that can accurately control the amount of material conveyed. The feeding pump 30 is connected to a three-ended feed pipe 31 through a pipeline. The three-ended feed pipe 31 is connected to each storage tank 9 to simultaneously output multiple raw materials to the built-in mixing chamber of the dual-photon polymerization printhead 8. A flow control valve is installed on the pipeline to adjust the conveying ratio of each material.

[0041] The pipe at the discharge end of the feed pump 30 passes through the inside of the printing box frame 6 and is connected to one end of the feed elastic hose 28. A support block with a through hole is movably sleeved on the feed elastic hose 28. The support block plays a role in fixing and guiding. The support block is fixed to one side of the bottom of the horizontal plate 23 and is connected to the horizontal plate 23 by bolts.

[0042] The printing box frame 6 has a control panel 32 with a built-in PLC controller on one side. The control panel 32 adopts a touch screen design, and the operation interface is intuitive and convenient. The control panel 32 is connected to the pump, cylinder, motor, sensor, ultraviolet light source lamp 10, heating plate 12 and ozone generator 13 in the molding equipment to dynamically regulate the temperature in the sealed curing chamber 2 to keep it in the medium temperature range, and to allow the workpiece to undergo deep ultraviolet and ozone treatment in the curing chamber 2. The PLC controller coordinates the work of each component through preset programs to realize the automated operation of the equipment.

[0043] The PLC controller (Siemens S7-1200) is connected to the drivers (Panasonic MINASA6) of motors A20 and B24 via the Profinet bus. It controls the proportional valves of cylinders 18, 15, and 17 via 4-20mA analog signals. Sensor signals such as temperature, pressure, and liquid level are connected to the PLC through a distributed I / O module (ET200SP).

[0044] The feed pump 30 and air pump 27 are controlled by the PLC output signal through the relay module. The ultraviolet light source lamp 10, heating plate 12, and ozone generator 13 achieve stepless power adjustment through solid-state relays. All control cables are shielded cables, laid along the equipment cable trays and grounded to ensure anti-interference capability.

[0045] Medium-temperature curing stage (core control stage, 220℃±5℃)

[0046] Temperature closed-loop control (heating plate 12 + temperature sensor 11):

[0047] During the heating phase: Based on the real-time data from the temperature control sensor 11 (PT100, accuracy ±0.1℃), the PLC starts the heating plate 12 (2kW ceramic heating element) via a solid-state relay (Hongfa HFD40A) using PWM pulse width modulation (duty cycle 0%~100%). The initial heating rate is set to 5℃ / min to avoid sudden temperature rise that could cause the workpiece to crack.

[0048] Constant temperature stage: When the temperature reaches 220℃, switch to PID control mode (proportional coefficient Kp=2, integral time Ti=100s, derivative time Td=20s), and control the temperature fluctuation within ±5℃ by dynamically adjusting the power of heating plate 12.

[0049] Safety mechanism: If the temperature exceeds 230℃ (10℃ over-temperature), the PLC will immediately cut off the power supply to the heating plate 12 and start the air-cooling fan inside the box (not shown), while triggering the buzzer alarm.

[0050] Photocuring co-control (UV light source lamp 10): When the temperature stabilizes at 220℃, the PLC sends a start signal to the UV light source lamp 10. The four groups of 40W UV lamps (wavelength 254nm) operate at 80% power, and the illuminance inside the chamber is ≥1500μW / cm² (at a distance of 200mm from the light source), which excites the photocuring resin to undergo a cross-linking reaction. The curing time is automatically calculated based on the workpiece thickness (formula: curing time = workpiece thickness × 3min / mm).

[0051] Ozone surface treatment stage (conducted simultaneously with curing)

[0052] Precise control of ozone concentration: The PLC adjusts the power of the ozone generator 13 through the analog output module (4~20mA) to control the ozone output (0-5g / h), and adjusts the flow rate through the pipeline solenoid valve (SMCVX2120) to maintain the ozone concentration in the chamber at 0.1-0.3ppm (safe treatment range).

[0053] Synergistic Logic: Simultaneously with the activation of the ultraviolet light source lamp 10, the ozone generator 13 is activated, utilizing ultraviolet light to promote ozone decomposition and generate hydroxyl radicals. OH), which enhances the efficiency of oxidative decomposition of organic residues (such as uncured resin) on the workpiece surface, and the treatment time ends simultaneously with the curing time.

[0054] Cooling and Discharge Stage

[0055] Cooling control: After curing, the PLC turns off the heating plate 12 and the ultraviolet light source 10, and keeps the ozone generator 13 running for 5 minutes to ensure thorough surface treatment. Then, the exhaust fan on the top of the box (not shown) is started to remove residual ozone, while cylinder 2 17 lifts the lifting platform 4 to the initial position at a speed of 30mm / s.

[0056] Safety unlocking: When the temperature sensor 11 detects that the temperature inside the chamber is <50℃, the PLC sends a retraction command to the cylinder 15, the solidified sealing plate 5 exits the through slot 3, allowing manual removal of parts or proceeding to the next printing cycle.

[0057] Specifically, during use, the printhead's three-dimensional positioning control is as follows: The PLC controller first receives the layered data of the three-dimensional model, and controls the solenoid valve of cylinder 18 through the analog module to adjust the Z-axis lifting of the printhead with an accuracy of ±0.1mm; at the same time, it sends pulse signals to motors A20 and B24, which, combined with the lead of lead screw A21 (5mm / rev) and encoder feedback, drive the longitudinal block 22 and the transverse block 26 to achieve high-precision linear motion on the Y-axis (resolution 0.01mm) and X-axis, ensuring that the printhead completes layer stacking along the preset trajectory (speed ≤200mm / s).

[0058] Precise mixing and conveying of multiple materials: The liquid level sensor of storage tank 9 monitors the remaining amount of photocurable resin, quartz sand, and functional dopants in real time. When the level is below the threshold, the PLC triggers an alarm on the feeding rack 29 and stops feeding. When the feeding pump 30 synchronously conveys materials through the three-head material pipe 31, the PLC adjusts the pump speed according to the preset volume ratio of the formula (e.g., 1:3:0.5) through a PID algorithm, and combines the branch flow control valve (electromagnetic flow meter + proportional valve) to achieve synchronous mixing of multiple materials; the pressure sensor of air pump 27 feeds back the pressure in the mixing chamber (0.5-1.0MPa), and the PLC dynamically compensates for pressure fluctuations through the pressure regulating valve to ensure that the material is extruded to the lifting support platform 4 at a stable rate.

[0059] Enclosed space construction: After printing is completed, the PLC sends a command to cylinder 17 to drive the lifting platform 4 to descend into the curing chamber 2. After the magnetic switch detects the position, it triggers cylinder 15 to push the curing sealing plate 5 into the through groove 3. The pressure sensor monitors the sealing contact pressure in real time to ensure that the leakage rate is <0.1L / min, thus forming a fully enclosed processing space.

[0060] Medium-temperature curing environment control: The heating plate 12 is heated by PWM pulse width modulation technology under the control of PLC. The temperature control sensor 11 provides real-time feedback of the temperature inside the chamber (accuracy ±0.1℃). The temperature is stabilized at 220℃±5℃ through PID algorithm. After the target temperature is reached, the PLC synchronously starts the ultraviolet light source lamp 10 (254nm wavelength, illuminance ≥1000μW / cm²) and ozone generator 13 (concentration 0.1-0.3ppm). The processing time is automatically calculated according to the thickness of the workpiece (e.g., 30 minutes per 10mm thickness). The resin is cured by deep ultraviolet light, and ozone decomposes organic residues on the surface at the same time.

[0061] Intelligent linkage and safety protection: The 32-inch touch screen on the control panel displays parameters such as temperature, pressure, and printing progress in real time, and supports manual / automatic mode switching and recipe input; when the sensor detects an abnormality (such as temperature exceeding the limit or material supply blockage), the PLC immediately triggers the shutdown protection, alarms through indicator lights and buzzers, and saves the data of the 10 seconds before the fault for easy troubleshooting.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A medium-temperature curing, full-body 3D printing quartz stone molding equipment, characterized in that, include: A molding and curing machine (1) is provided with a curing box (2) on the lower end face of the molding and curing machine (1) for curing the printed quartz stone in a closed space and using deep ultraviolet light plus ozone to replace grinding and polishing treatment. The curing box (2) is provided with a lifting support platform (4) for lifting and curing the printed workpiece through a through groove (3). The molding and curing machine (1) is provided with a curing sealing plate (5) on both sides that can extend and penetrate into the through groove (3) to seal. The printing box frame (6) has a printing drive mechanism (7) on its inner side that allows the print head to move up and down and move horizontally and vertically for printing. The bottom end of the printing drive mechanism (7) is equipped with a two-photon polymerization print head (8) with a built-in mixing chamber. The outer side of the printing box frame (6) is equipped with multiple storage tanks (9) for storing and conveying photocurable resin, quartz sand of different particle sizes and functional dopants to the two-photon polymerization print head (8) for printing.

2. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 1, characterized in that: The curing chamber (2) is provided with an ultraviolet light source lamp (10) for providing ultraviolet light and cooperating with the light-curing resin on both sides of the inner side wall, and a heating plate (12) for heating the inside of the curing chamber (2) to a medium temperature. The bottom of one side wall of the curing chamber (2) is provided with a temperature control sensor (11) for real-time monitoring of the temperature inside the curing chamber (2) and maintaining the curing temperature in the medium temperature range of 220 degrees.

3. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 1, characterized in that: The curing chamber (2) is equipped with an ozone generator (13) on one side outside, which works in conjunction with an ultraviolet light source lamp (10) to decompose organic residues on the surface of the workpiece by using the strong oxidizing properties of ozone. The ozone generator (13) is penetrated through a pipe to the inside of the curing chamber (2). The bottom of the curing chamber (2) is symmetrically equipped with cylinder two (17), and the lifting support platform (4) is fixed horizontally at the top of cylinder two (17).

4. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 1, characterized in that: The inner walls of the through groove (3) are provided with inner cavities (14) through which the curing sealing plate (5) extends and retracts from the molding curing machine (1) into the through groove (3) to seal it. The curing sealing plate (5) passes through the inner cavity (14) to the inside of the through groove (3) to seal the curing box (2). The curing box (2) is provided with cylinders (15) on both sides of the outside, and cylinders (15) are provided with connecting blocks (16) connected to the bottom side of one end of the curing sealing plate (5).

5. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 1, characterized in that: The printing drive mechanism (7) includes cylinder three (18) symmetrically arranged at the top of the inside of the printing box frame (6). The bottom end of the cylinder three (18) is provided with a lifting plate (19), and a motor A (20) is provided in a longitudinal groove in the middle of the lower end face of the lifting plate (19). The shaft end of the motor A (20) is connected to a lead screw A (21), and the lead screw A (21) drives a longitudinal block (22) that slides in the longitudinal groove. The bottom end of the longitudinal block (22) is provided with a transverse plate (23) that moves the print head laterally. A motor B (24) is provided on one side of the lower end face of the transverse plate (23), and the shaft end of the motor B (24) is connected to a lead screw B (25), and a transverse block (26) drives a transverse block through the lead screw B (25).

6. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 5, characterized in that: The upper end of the dual-photon polymerization printhead (8) is provided with an air pump (27) that pressurizes the built-in mixing chamber, and the dual-photon polymerization printhead (8) is fixed at the front end of the horizontal block (26), and the horizontal block (26) slides in the guide groove provided at the bottom of the horizontal plate (23) through the limiting slider at the top. The dual-photon polymerization printhead (8) is connected to a feeding elastic hose (28) that can move horizontally and vertically without affecting the feeding.

7. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 6, characterized in that: A feeding rack (29) is provided on one side of the outside of the printing box frame (6). Multiple storage tanks (9) are located at the upper end of the feeding rack (29). A feeding pump (30) is provided at the lower end of the feeding rack (29). The feeding pump (30) is connected to a three-headed material pipe (31) through a pipe. The three-headed material pipe (31) is connected to each storage tank (9) to output multiple raw materials simultaneously to the built-in mixing chamber of the dual-photon polymerization printing head (8).

8. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 7, characterized in that: The pipe at the discharge end of the feed pump (30) passes through the inside of the printing box frame (6) and is connected to one end of the feed elastic hose (28). A support block with a through hole is movably sleeved on the feed elastic hose (28), and the support block is fixed on one side of the bottom of the horizontal plate (23).

9. The medium-temperature curing whole-body 3D printing quartz stone molding equipment according to claim 1, characterized in that: The printing box frame (6) is provided with a control panel (32) with a built-in PLC controller on one side. The control panel (32) is connected to the pump, cylinder, motor, sensor, ultraviolet light source lamp (10), heating plate (12) and ozone generator (13) in the molding equipment to dynamically regulate the temperature in the sealed curing box (2) to a medium temperature range, and to make the workpiece undergo deep ultraviolet and ozone treatment in the curing box (2).

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