Photocurable reinforced bignon structure preparation device and preparation method thereof

Abstract

The application relates to a device for preparing a photo-cured reinforced Bligon structure and a preparation method thereof, and belongs to the technical field of photo-cured preparation of a bionic structure. A liquid material conveying mechanism and a lifting mechanism are arranged on a control box and a control module. The liquid material conveying mechanism is connected with a rotary indexing device, and is used for feeding the rotary indexing device. A discharging mechanism for discharging the rotary indexing device is arranged on the lifting mechanism. The rotary indexing device can control the discharging screw angle through rotation after being driven. The application can realize the preparation of a bionic coupling structure material of a single-layer spiral structure and a "brick-mud" structure in a bionic structure. The preparation method is simple and efficient. The volume and height of liquid material in the rotary indexing device can be controlled through the liquid material conveying mechanism. The liquid material in the rotary indexing device can form a spiral angle between Bligon structure layers through the rotary indexing device. Therefore, the Bligon reinforced structure with different layer height parameters and different spiral angle parameters can be prepared.

Description

Technical Field

[0001] This invention relates to a device and method for preparing photocurable reinforced phase Brigand structures, belonging to the field of photocurable preparation of biomimetic structures. Background Technology

[0002] Stereolithography, also known as photopolymerization, is a type of rapid prototyping technology. It is currently the most mature and widely used rapid prototyping technology. Using photosensitive resin as raw material, a laser of specific wavelength and intensity is focused onto the surface of the photopolymer material, causing it to solidify sequentially from point to line and from line to surface, completing the drawing of one layer. Then, a lifting platform moves vertically by the height of one layer, solidifying another layer, thus creating a three-dimensional solid through layer stacking.

[0003] Currently, Bragan structures with reinforced phases typically employ thin composite layers of epoxy resin, such as carbon fiber, glass fiber, and basalt fiber. These layers are spirally arranged, layered, and then molded, heated, and naturally cooled to achieve overall curing of the spiral layers, thereby enhancing the material's load-bearing capacity and energy absorption characteristics. However, structures obtained through this method have significant limitations. The reinforcing phase material can only use high-performance fibers such as carbon fiber and basalt fiber because the raw materials are commercially available pre-impregnated fiber epoxy resins. It is impossible to achieve Bragan structures with reinforcing phases such as aluminum alloys or iron, thus hindering the verification and acquisition of lightweight structural materials with superior mechanical properties. While Bragan structures can be fabricated using photopolymerization 3D printing equipment, it is impossible to create Bragan structures with reinforced phases, which often exhibit superior mechanical properties compared to single-phase Bragan structures. Currently, there are very few devices available on the market for preparing reinforced Brugon structures. Most of them are manually operated, which is cumbersome, time-consuming, and labor-intensive, and the finished products have very poor precision. This device, due to the addition of a liquid level sensor and an automatic rotation device, can efficiently prepare Brugon reinforced phase structures with different layer height parameters and different helix angle parameters. Summary of the Invention

[0004] To overcome the problems existing in the background technology, the present invention can realize the preparation of biomimetic coupled structure materials of single-layer spiral structure and "brick-mud" structure in biomimetic structures. The preparation method is simple and efficient. The volume and height of the liquid inside the rotating indexing device can be controlled by the liquid delivery mechanism. The rotating indexing device controls the spiral angle between the layers of the Brugon structure formed by the liquid inside. Thus, Brugon reinforced phase structures with different layer height parameters and different spiral angle parameters can be prepared, thereby obtaining Brugon structures with different mechanical properties and reinforcement terms.

[0005] To overcome the problems existing in the background art and to solve the above problems, the present invention is achieved through the following technical solution:

[0006] The apparatus for preparing photocurable reinforced phase Brugon structures includes a lifting mechanism, a feeding mechanism, a rotary indexing device, a control box and control module, and a liquid conveying mechanism. The control box is equipped with the liquid conveying mechanism and the lifting mechanism. The liquid conveying mechanism is connected to the rotary indexing device and is used to supply material to the rotary indexing device. The lifting mechanism is equipped with a feeding mechanism for feeding material to the rotary indexing device. After the rotary indexing device is driven, the feeding spiral angle can be controlled by rotation. During this period, the liquid conveying mechanism controls the volume and height of the liquid inside the rotary indexing device, and the rotary indexing device controls the spiral angle between the Brugon structure layers formed by the liquid inside.

[0007] Preferably, the lifting mechanism includes a first bearing housing, a ball screw shaft, a slide, a frame, a guide rail, a second bearing housing, and a coupling. The ball screw shaft is vertically mounted inside the frame via the first and second bearing housings. The slide is threaded onto the ball screw shaft. Guide rails are horizontally and symmetrically mounted on both sides of the ball screw shaft. A first motor is connected to the bottom of the ball screw shaft via a coupling.

[0008] Preferably, the feeding mechanism includes a mounting plate, a worktable, side plates, a Briggan structure material plate, a pressure sensor, a pressure plate, an embedded layer, an electromagnet, and a magnetic conductive layer. The mounting plate is fixedly connected to the slide block, and the mounting plate has sliding grooves on both sides that are slidably connected to the guide rail. The worktable is mounted on the mounting plate, and the pressure plate is mounted on the worktable via a support base. An embedded layer is connected to the lower side of the pressure plate, and an electromagnet is installed in the embedded layer. A magnetic conductive layer is installed on the lower side of the embedded layer. Side plates for guiding feeding are detachably mounted on both sides of the bottom of the magnetic conductive layer. A pressure sensor for controlling the feeding of the liquid conveying device is installed at the bottom of the side plates. The Briggan structure material plate is magnetically attracted between the side plates on the magnetic conductive layer.

[0009] Preferably, the rotary indexing device includes a second motor and a main material trough. The main material trough is mounted on the top of the control box and control module via bearings. The control box and control module are equipped with a second motor connected to the main material trough. The second motor drives the main material trough to rotate, thereby controlling the internal liquid material to form the helical angle between the Brigan structure layers.

[0010] Preferably, the control box and control module are equipped with a power supply and control module.

[0011] Preferably, the material conveying mechanism includes a first auxiliary material tank, a first fluid pump, a first solenoid valve, a second auxiliary material tank, a second fluid pump, a second solenoid valve, a conveying pipe, and a liquid level sensor. The first auxiliary material tank is connected to the first solenoid valve through the conveying pipe. The first solenoid valve is connected to the inlet of the first fluid pump through the conveying pipe. The outlet of the first fluid pump is connected to the inlet of the second auxiliary material tank through the conveying pipe. A liquid level sensor is installed inside the second auxiliary material tank. The outlet of the second auxiliary material tank is connected to the second solenoid valve through the conveying pipe. The second solenoid valve is connected to the inlet of the second fluid pump through the conveying pipe. The outlet of the second fluid pump extends to the main material tank through the conveying pipe.

[0012] Preferably, a heat-conducting plate is installed along the bottom of the second auxiliary material tank, the bottom heat-conducting plate is provided with an interlayer, a heat radiation device embedding groove is provided in the interlayer, a heat radiation device is installed in the heat radiation device embedding groove, and a heat insulation layer is provided at the bottom of the interlayer.

[0013] 1. The apparatus for preparing photocurable reinforced phase Brigand structures according to claims 4-7, wherein the preparation method comprises the following steps:

[0014] Step 1: Calculate the electromagnetic attraction force of electromagnets with different currents on the Brigan material plate using mathematical formulas or calibration methods. Calculate the required adjustment of the digital potentiometer resistance value for each reduced layer of Brigan structural material plate using the second Newton's law of mechanics. Control the change of the digital potentiometer resistance value by pre-programming the circuit to achieve the change of current and electromagnetic attraction force in the preset circuit.

[0015] Formula: When a DC solenoid electromagnet is installed, the electromagnetic attraction force can be calculated according to formula (1).

[0016] (1)

[0017] In the formula, Working air gap flux, unit: ; The working air gap magnetic induction intensity, unit: ; Let be the permeability of free space, and its value is . ; Magnetic circuit cross-sectional area, unit: ,

[0018] The air gap magnetic induction intensity of the DC electromagnet is

[0019] (2)

[0020] In the formula: N is the number of turns of the coil; R1 is the current intensity, in amperes (A); U is the electromagnet voltage, in volts (V); R1 is the winding resistance, in volts (V). ; The length of the air gap is in meters.

[0021] Substituting equation (2) into equation (1), we get:

[0022] (3)

[0023] The relationship between voltage and current in the circuit is as follows:

[0024] (4)

[0025] In the formula, R is the resistance of the digital potentiometer, and R0 is the equivalent resistance of other devices in the circuit.

[0026] Substituting equation (4) into equation (3), we get:

[0027] (5)

[0028] Formula (5) shows the relationship between the resistance of the digital potentiometer and the electromagnetic attraction force. The electromagnetic attraction force can be controlled by controlling the resistance of the digital potentiometer.

[0029] Step 2: Pre-set the upper and lower limits of the liquid level sensor, and calculate the liquid volume between the upper and lower limits of the second auxiliary material tank corresponding to the liquid level height of the main material tank through mathematical formula. This controls the solidification of liquid at different heights in each layer, and the Brugon-reinforced phase structure formed after solidification at different layer heights also has different degrees of mechanical properties.

[0030] Step 3: Prepare the Brigan structure material plate by engineering means. The material plate is attracted by the pre-set electromagnetic adsorption force. Before starting, pour the liquid into the auxiliary material tank and control the liquid level at the upper limit of the second auxiliary material tank by controlling the first solenoid valve and the second solenoid valve.

[0031] Step 4: Control the lifting structure drive motor to control the worktable connected to the slide to move downward. When the pressure sensor at the bottom of the side plate fixed to the worktable changes pressure, that is, when the pressure sensor contacts the main material tank, the control system receives a feedback signal and adjusts the electromagnetic adsorption force to a force that reduces the weight of one layer of Brigan material plate compared to before by controlling the preset current adjustment law. As the electromagnetic adsorption force weakens, one layer of Brigan material plate falls into the main material tank. Then, the pressure sensor at the bottom of the tank detects the pressure change and sends a signal feedback. The control system controls the rotary indexing device to rotate a certain angle. The rotary indexing device drives the main material tank to rotate a certain angle through the cooperation of the protruding groove structure. At the same time, the lifting structure drive motor shaft reverses.

[0032] Step 5: When the control module receives the electrical signal from the pressure sensor at the bottom of the material tank, it simultaneously controls the second solenoid valve to open. The second hydraulic pump then uses hydraulic pressure to transport the liquid from the second auxiliary material tank to the main material tank. When the liquid level in the second auxiliary material tank drops to the set lower limit, the liquid level sensor detects and transmits an electrical signal to the control system. The control system then controls the first solenoid valve to open and the second solenoid valve to close. The first hydraulic pump then uses hydraulic pressure to transport the liquid from the first auxiliary material tank to the second auxiliary material tank until the liquid level in the second auxiliary material tank rises to the set upper limit, at which point the first solenoid valve closes.

[0033] Step 6: After the second auxiliary material tank delivers the set volume of liquid material to the main material tank, the control module controls the ultraviolet emitting device to turn on and controls the ultraviolet irradiation time through the timing device. This timing time should allow the liquid material to completely solidify.

[0034] Step 7: Wait for the UV emission light source irradiation time in step 6 to end. Based on the signal feedback from the timing device, repeat steps 3 to 6 in sequence until the last layer of Brigan structure material plate falls into the main material tank and the liquid material covering the last layer of material plate is completely solidified.

[0035] The beneficial effects of this invention are as follows:

[0036] This invention enables the preparation of biomimetic coupled structural materials, including single-layer helical structures and "brick-and-mortar" structures. The preparation method is simple and efficient. The volume and height of the liquid inside the rotating indexing device can be controlled by the liquid delivery mechanism. The rotating indexing device controls the helical angle between the layers of the Brugon structure formed by the liquid inside. This allows for the preparation of Brugon-reinforced phase structures with different layer height parameters and different helical angle parameters, thereby obtaining Brugon structures with different mechanical properties and reinforcement terms. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention;

[0038] Figure 2 This is an isometric side view of the present invention;

[0039] Figure 3 This is an exploded view of the workbench layers of the present invention;

[0040] Figure 4 This is an isometric view of the rotary indexing turntable and the main material trough of the present invention;

[0041] Figure 5 This is a cross-sectional view of the control box of the present invention;

[0042] Figure 6 This is an isometric side view of the second auxiliary material trough of the present invention;

[0043] Figure 7 This is a cross-sectional view of the second auxiliary material trough of the present invention;

[0044] Figure 8 This is an isometric test diagram of the outer casing of the present invention;

[0045] Figure 9 This is a schematic diagram of a single-layer Brugon structure material plate of the present invention;

[0046] Figure 10 This is a schematic diagram of the system circuit structure of the present invention.

[0047] In the diagram: 100-Lifting mechanism; 200-Discharging mechanism; 300-Rotary indexing device; 400-Control box and control module; 500-Material conveying mechanism; 110-First bearing seat; 120-Ball screw shaft; 130-Slide; 140-Frame; 150-Guide rail; 160-Second bearing seat; 170-Coupling; 180-First motor; 210-Mounting plate; 220-Worktable; 230-Side plate; 240-Brighamnian structure material plate; 250-Pressure sensor; 221-Pressure plate; 222-Embedded layer; 223-Electromagnet; 224-Magnetic layer; 225-Clamping plate groove; 310-Main material trough; 320-Rotating seat; 311-Main material trough groove; 321-Rotating turntable boss; 330-Second motor; 400-Control box; 430-Power supply and control module; 510-First auxiliary material trough; 520-First fluid pump; 530-First solenoid valve; 540-Second auxiliary material trough; 550-Second fluid pump; 560-Second solenoid valve; 570-Transporting pipe; 541-Level sensor; 542-Pipe inlet; 543-Pipe outlet; 544-Heat-conducting plate; 545-Interlayer; 546-Embedded groove for heat radiation device; 547-Insulation layer. Detailed Implementation

[0048] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0049] like Figure 1-9As shown, the photocurable reinforced phase Brugon structure preparation device and its preparation method include a lifting mechanism, a feeding mechanism 200, a rotary indexing device 300, a control box 400, and a liquid conveying mechanism 500. The control box 400 is equipped with the liquid conveying mechanism 500 and the lifting mechanism. The liquid conveying mechanism 500 is connected to the rotary indexing device 300 and is used to supply material to the rotary indexing device 300. The lifting mechanism is equipped with a feeding mechanism 200 for feeding material to the rotary indexing device 300. After the rotary indexing device 300 is driven, the feeding spiral angle can be controlled by rotation. During this period, the liquid conveying mechanism 500 controls the volume and height of the liquid inside the rotary indexing device 300, and the rotary indexing device 300 controls the spiral angle between the Brugon structure layers formed by the liquid inside.

[0050] The lifting mechanism includes a first bearing seat 110, a ball screw shaft 120, a slide 130, a frame 140, a guide rail 150, a second bearing seat 160, and a coupling 170. The ball screw shaft 120 is vertically mounted inside the frame 140 via the first bearing seat 110 and the second bearing seat 160. The slide 130 is threaded onto the ball screw shaft 120. The guide rails 150 are horizontally and symmetrically mounted on both sides of the ball screw shaft 120. The bottom of the ball screw shaft 120 is connected to a first motor 180 via the coupling 170. The first bearing housing 110 and the second bearing housing 160 are fastened to the frame 140 with screws, and their central axes are located in the same vertical plane. The left and right sides of the front surface of the frame are fixedly connected to the guide rails 150. The guide rails 150 and the vertical line of the frame 140 are parallel to each other and their central axes are located in the same vertical plane. The lower end of the frame 140 is fixedly connected to the control box 400. The ball screw shaft 120 can be driven to rotate by the rotation of the first motor 180.

[0051] The feeding mechanism 200 includes a mounting plate 210, a workbench 220, a side plate 230, a Briggan structure material plate 240, a pressure sensor 250, a pressure plate 221, an embedded layer 222, an electromagnet 223, and a magnetic conductive layer 224. The mounting plate 210 is fixedly connected to the slide block 130, and the mounting plate 210 has sliding grooves on both sides that are slidably connected to the guide rail 150. The workbench 220 is mounted on the mounting plate 210, and the pressure plate 221 is mounted on the workbench 221 via a support base. The embedded layer 222 is connected to the lower side of the pressure plate 221. An electromagnet 223 is installed inside the embedded layer 222 and is electrically connected to the control module. A magnetically conductive layer 224 is installed on the lower side of the embedded layer 222. Side plates 230 for guiding material feeding are detachably installed on both sides of the bottom of the magnetically conductive layer 224. A pressure sensor 250 for controlling the feeding of the liquid conveying device is installed at the bottom of the side plates 230. A Brilliant structure material plate 240 is magnetically attracted between the side plates 230 on the magnetically conductive layer 224. The upper and lower surfaces of the electromagnet 223 and the upper and lower surfaces of the magnetically conductive layer 224 are all planar. The planar surface helps to maximize the electromagnetic adsorption area and makes the electromagnetic adsorption more stable.

[0052] In this embodiment, the rotation of the first motor 180 drives the ball screw shaft 120 to rotate. After the ball screw shaft 120 rotates, under the action of the thread of the slide 130, it drives the slide 130 to move up and down in the cooperation of the mounting plate 210 slide groove and the guide rail 150, thereby driving the entire worktable to move up and down. Furthermore, the electromagnet 223 is fixed by the magnetic layer 224 and conducts electromagnetic attraction force. The Brigan structure material plate 240 is attracted to the magnetic layer 224 by electromagnetic attraction. The side clamps 230 are detachably and symmetrically installed on the lower surface of the magnetic layer 224. The side plates have only a small clamping force on the Brigan structure material plate, which can be ignored. When the Brigan structure material plate 240 falls, the side plates 230 play a certain guiding role. A pressure sensor 250 is fixedly installed at the bottom of the side plate 230. The pressure sensor moves up and down with the worktable 220. When the position moves to the point where the pressure sensor 250 contacts the bottom surface of the main material tank 310, the pressure sensor can detect the pressure change and convert it into an electrical signal to be transmitted to the control module.

[0053] Specifically, the support structure of the workbench 220's support base 221 can be configured as an L-shaped structure with rounded or chamfered corners. The workbench 220 is fixed to the front end of the mounting plate by bolts. A pressure plate 221 is fixedly connected to the vertical end face of the L-shape. The lower end of the pressure plate 221 has an embedded layer 222 with a clamping groove 225 that can accommodate an electromagnet and matches the shape of the electromagnet. The electromagnet 223 is embedded in the clamping groove 225 and can be fixed to the embedded layer 222 by screws. The electromagnet is electrically connected to the control system and can generate electricity when energized. An electromagnetic attraction force is generated, and the magnitude of the electromagnetic attraction force can be controlled by controlling the current. The lower surface of the embedded layer 222 is in contact with the upper surface of the magnetically conductive layer 224. The magnetically conductive layer can conduct magnetism, and its influence on the electromagnetic attraction force is negligible. The Briggan structure material plate 240 can be attracted to the lower surface of the magnetically conductive layer 224 by the electromagnetic attraction force of the electromagnet. When the attraction force decreases, the Briggan structure material plate is unloaded and, guided by the left and right side plates 230, falls into the main material trough, realizing the overall unloading function of the worktable 220. The Briggan structure material plate is a solid iron round tube with a diameter between 0.4 and 2 mm. The length of the round tube is less than the length and width of the worktable 220. The round tubes are evenly arranged horizontally with zero or slight gaps. The overall length and width of the material plate cannot exceed the area limit of the worktable 220.

[0054] The rotary indexing device 300 includes a second motor 330 and a main material tank 310. The main material tank 310 is mounted on the top of the control box 400 and the control module 400 via bearings. The second motor 330, which is connected to the main material tank 310, is installed inside the control box 400 and the control module 400. The second motor 330 drives the main material tank 310 to rotate, thereby controlling the internal liquid material to form the helical angle between the Brigan structure layers. In this embodiment, a rotary indexing turntable 320 connected to the main material trough 310 is also included. The axes of the main material trough 310 and the rotary indexing turntable 320 are located on the same straight line. The upper surface of the rotary indexing turntable 320 is provided with a flange and a columnar protrusion, and the lower surface is in contact with the upper surface of the control box 400 and can rotate relative to it. Specifically, a rotating shaft is provided at the bottom of the rotary indexing turntable 320 and passes through the control box 400. A bearing is installed inside the control box 400 to cooperate with the rotating shaft. The rotating shaft is connected to the second motor 330 through a coupling. The lower surface of the main material trough 310 is provided with a groove that cooperates with the rotary indexing turntable. The two are connected by a protrusion and groove structure. The second drive motor 420 drives the rotary indexing turntable 320 to rotate, and then drives the main material trough to rotate through the protrusion and groove structure of the two. The rotation angle of the rotary indexing turntable 320 can be controlled by the control system. The rotation angle can be adjusted by the control module, thereby realizing Brugon-reinforced phase structures with different helical angles.

[0055] The liquid conveying mechanism 500 includes a first auxiliary material tank 510, a first fluid pump 520, a first solenoid valve 530, a second auxiliary material tank 540, a second fluid pump 550, a second solenoid valve 560, a conveying pipe 570, and a liquid level sensor 541. The liquid is photosensitive resin. The first auxiliary material tank 510 is connected to the first solenoid valve 530 through the conveying pipe 570. The first solenoid valve 530 is connected to the inlet of the first fluid pump 520 through the conveying pipe 570. The outlet 543 of the first fluid pump 520 is connected to the inlet 542 of the second auxiliary material tank 540 through the conveying pipe 570. The liquid level sensor 541 is installed inside the second auxiliary material tank 540. The outlet 543 of the second auxiliary material tank 540 is connected to the second solenoid valve through the conveying pipe 570. The second solenoid valve is connected to the inlet of the second fluid pump 550 through the conveying pipe 570. The outlet 543 of the second fluid pump 550 extends to the main material tank 310 through the conveying pipe 570. In this embodiment, the first auxiliary material tank 510, the first fluid pump 520, the first solenoid valve 530, the second auxiliary material tank 540, the second fluid pump 550, and the second solenoid valve 560 are all detachably fixed to the upper end of the control box 400. To prevent air particles or other impurities from contaminating the purity of the photosensitive resin, the first auxiliary material tank 510 and the second auxiliary material tank 540 are both equipped with upper end caps. The flow rate and volume of the liquid are controlled by the first fluid pump 520 and the second fluid pump 550, and the liquid is switched on and off by the first solenoid valve 530 and the second solenoid valve 560. The connection between the liquid delivery pipeline 570 and other structures is sealed. In addition, at the initial moment of operation, a certain amount of liquid is poured into the first auxiliary material tank 510. The height of the liquid is unlimited but must not exceed the height of the first auxiliary material tank 510. The liquid level in the second auxiliary material tank 540 is a preset height, i.e., the upper limit set by the liquid level sensor. When the control box 400 receives the electrical signal transmitted by the pressure sensor at the bottom of the material tank, it simultaneously controls the first solenoid valve 530 to close and the second solenoid valve 560 to open. The second fluid pump 550 uses hydraulic pressure to transport the liquid from the second auxiliary material tank 540 to the main material tank 310. When the liquid level in the second auxiliary material tank 540 drops to the preset lower limit, the liquid level sensor 541 detects and transmits an electrical signal to the power supply and control module 430. The control module controls the first solenoid valve 530 to open and the second solenoid valve 560 to close. Then, the first fluid pump 520 uses hydraulic pressure to transport the liquid from the first auxiliary material tank 510 to the second auxiliary material tank 540 until the liquid level in the second auxiliary material tank 540 rises to the preset upper limit, at which point the first solenoid valve 530 closes. A heat-conducting plate 544 is installed at the bottom of the inner edge of the second auxiliary material tank 540. The heat-conducting plate 544 at the bottom is provided with a sandwich layer 545. A heat radiation device embedding groove 546 is provided in the sandwich layer 545. A heat radiation device is installed in the heat radiation device embedding groove 546. A heat insulation layer 547 is provided at the bottom of the sandwich layer 545.In this embodiment, the liquid level sensor can be set with upper and lower limits. By adjusting the upper and lower limits of the liquid level in the second auxiliary material tank 540, the volume of the liquid can be limited, thereby adjusting the single-stage solidification layer height of the liquid in the main material tank 310. The side wall of the material tank is provided with a liquid conveying pipe inlet 542 and a liquid conveying pipe outlet 543. The inlet and outlet connections of the liquid conveying pipe are sealed, such as by setting a sealing ring. The heat-conducting plate 544 can be made of a material with a high thermal transfer coefficient and is welded or detachably connected to the inner wall of the material tank. A sandwich layer 545 is provided below the heat-conducting plate 544, and a heat radiation device embedding groove 546 is provided in the sandwich layer 545. The embedding groove is equipped with and fixed with a heat radiation device, which can dissipate heat to heat the liquid in the second auxiliary material tank, thereby enhancing the fluidity of the liquid entering the main material tank 310 and making the liquid spread evenly. In this embodiment, the heat radiation device can be a heat sink, which is connected to the power supply and control module 430. The heat-conducting plate 544, sandwich layer 545, heat insulation layer 546, and heat radiation device can all be set as detachable structures for easy installation and maintenance.

[0056] This embodiment also includes an outer cover 600, which encloses all the above-mentioned devices within a sealed space. The inner side of the outer cover is uniformly covered with an ultraviolet reflective film, and the inner side walls are fixedly embedded with uniformly distributed ultraviolet emitting light sources. The ultraviolet irradiation device can be a UV lamp 610. The light source emits ultraviolet light within a certain wavelength range. This ultraviolet light of a certain wavelength can cure the liquid material after a period of time. The ultraviolet reflective film on the inner side walls not only improves light utilization but also facilitates the uniform curing of the liquid material. The ultraviolet emitting switch is electrically connected to the control system, which can control its switching, power adjustment, and irradiation timing, thereby avoiding and reducing energy consumption and waste. Specifically, the UV lamp is connected to a timing device, which is a time relay, and the curing time can be set.

[0057] The control box 400 is internally connected to a power supply and a control module 430. The control module is electrically connected to an ultraviolet emitting unit, a first drive motor 410, a second drive motor 420, a pressure sensor 250, a liquid level sensor 541, and solenoid valves 530 and 560, etc., to receive signals and provide signal feedback. It can also control the time for the liquid to completely solidify through a time relay. The upper inner wall of the control box 500 is fixedly connected to a first motor 180 that controls the movement of the ball screw shaft 120 and a second motor 330 that controls the rotation of the indexing plate.

[0058] The method for preparing a photocurable reinforced phase Brigand structure according to any one of the preceding claims comprises the following steps:

[0059] Step 1: Calculate the electromagnetic attraction force of electromagnet 223 with different currents on the Brigan material plate by mathematical formula or calibration method. Calculate the value of digital potentiometer that needs to be adjusted for each reduction of one layer of Brigan structural material plate 240 by the second law of mechanics. Control the change of digital potentiometer resistance by pre-programming the program, thereby realizing the change of preset circuit current and electromagnetic attraction force.

[0060] Formula: When a single DC solenoid electromagnet is used, the electromagnetic attraction force can be calculated using the formula. If multiple electromagnets are used, the electromagnetic attraction force will be n times the original value.

[0061] (1)

[0062] In the formula, Working air gap flux, unit: ; The working air gap magnetic induction intensity, unit: ; Let be the permeability of free space, and its value is . ; Magnetic circuit cross-sectional area, unit: .

[0063] Ideally, neglecting leakage flux and air gaps at other connection points, and assuming the main air gap is the armature stroke, the air gap magnetic induction intensity of the DC electromagnet is:

[0064] (2)

[0065] In the formula: N is the number of turns of the coil; R1 is the current intensity, in amperes (A); U is the electromagnet voltage, in volts (V); R1 is the winding resistance, in volts (V). ; This is the air gap length, in meters (m).

[0066] Substituting equation (2) into equation (1), we get:

[0067] (3)

[0068] The relationship between voltage and current in the circuit is as follows:

[0069] (4)

[0070] In the formula, R is the resistance of the digital potentiometer, and R0 is the equivalent resistance of other devices in the circuit.

[0071] Substituting equation (4) into equation (3), we get:

[0072] (5)

[0073] Formula (5) shows the relationship between the resistance of the digital potentiometer and the electromagnetic attraction force. The electromagnetic attraction force can be controlled by controlling the resistance of the digital potentiometer.

[0074] Step 2: Pre-set the upper and lower limits of the liquid level sensor 541, and calculate the liquid volume between the second auxiliary upper and lower limits corresponding to the liquid level height of the main material tank 310 through mathematical formula, thereby controlling the solidification of liquid at different heights of each layer. The Brugon-reinforced phase structure formed after solidification at different layer heights also has different degrees of mechanical properties.

[0075] Step 3: Prepare the Brigan structure material plate 240 by engineering means. The material plate is attracted by the pre-set electromagnetic adsorption force. Before starting, pour the liquid into the auxiliary material tank and control the liquid level at the upper limit position of the second auxiliary material tank 540 by controlling the first solenoid valve 530 and the second solenoid valve.

[0076] Step 4: The lifting structure drive motor controls the worktable 220 connected to the slide 130 to move downward. When the pressure sensor 250 at the bottom of the side plate 230 fixedly connected to the worktable 220 changes pressure, that is, when the pressure sensor 250 contacts the main material trough 310, the control system receives a feedback signal and adjusts the electromagnetic adsorption force to a force that reduces the weight of one layer of Brigan material plate compared to before by controlling the preset current adjustment law. As the electromagnetic adsorption force weakens, one layer of Brigan material plate 240 falls into the main material trough 310. Then, the pressure sensor 250 at the bottom of the trough detects the pressure change and sends a signal feedback. The control system controls the rotary indexing device 300 to rotate a certain angle (adjustable). The rotary indexing device 300 drives the main material trough 310 to rotate a certain angle through the cooperation of the protruding groove structure. At the same time, the lifting structure drive motor shaft reverses.

[0077] Step 5: When the control module receives the electrical signal from the pressure sensor 250 at the bottom of the material tank, it simultaneously controls the second solenoid valve to open. The second hydraulic pump then uses hydraulic pressure to transport the liquid from the second auxiliary material tank 540 to the main material tank 310. When the liquid level in the second auxiliary material tank 540 drops to the set lower limit, the liquid level sensor 541 detects and transmits an electrical signal to the control system. The control system then controls the first solenoid valve 530 to open and the second solenoid valve to close. The first hydraulic pump then uses hydraulic pressure to transport the liquid from the first auxiliary material tank 510 to the second auxiliary material tank 540 until the liquid level in the second auxiliary material tank 540 rises to the set upper limit, at which point the first solenoid valve 530 closes.

[0078] Step 6: After the second auxiliary material tank 540 delivers the set volume of liquid material to the main material tank 310, the control module controls the ultraviolet emitting device to turn on and controls the ultraviolet irradiation time through the timing device. The timing time should allow the liquid material to completely solidify.

[0079] Step 7: Wait for the UV emission light source irradiation time in step 6 to end. Based on the signal feedback from the timing device, repeat steps 3 to 6 in sequence until the last layer of Brigan structure material plate 240 falls into the main material tank 310 and the liquid material covering the last layer of material plate is completely solidified.

[0080] This invention enables the preparation of biomimetic coupled structural materials, including single-layer helical structures and "brick-and-mortar" structures. The preparation method is simple and efficient. The volume and height of the liquid inside the rotating indexing device can be controlled by the liquid delivery mechanism. The rotating indexing device controls the helical angle between the layers of the Brigan structure formed by the liquid inside. Brigan reinforced phase structures with different layer height parameters and different helical angle parameters can be prepared, thereby obtaining Brigan structures with reinforced phases with different mechanical properties.

[0081] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A device for preparing photocurable reinforced phase Brigand structures, characterized in that: The apparatus for preparing photocurable reinforced phase Brugon structures includes a lifting mechanism, a feeding mechanism, a rotary indexing device, a control box and control module, and a liquid conveying mechanism. The control box is equipped with the liquid conveying mechanism and the lifting mechanism. The liquid conveying mechanism is connected to the rotary indexing device and is used to supply material to the rotary indexing device. The lifting mechanism is equipped with a feeding mechanism for feeding material to the rotary indexing device. After the rotary indexing device is driven, the feeding spiral angle can be controlled by rotation. During this period, the liquid conveying mechanism controls the volume and height of the liquid inside the rotary indexing device, and the rotary indexing device controls the spiral angle between the Brugon structure layers formed by the liquid inside.

2. The apparatus for preparing photocurable reinforced phase Brigand structures according to claim 1, characterized in that: The lifting mechanism includes a first bearing housing, a ball screw shaft, a slide, a frame, guide rails, a second bearing housing, and a coupling. The ball screw shaft is vertically mounted inside the frame via the first and second bearing housings. The slide is threaded onto the ball screw shaft. Guide rails are horizontally and symmetrically mounted on both sides of the ball screw shaft. The bottom of the ball screw shaft is connected to a first motor via a coupling.

3. The apparatus for preparing photocurable reinforced phase Brigand structures according to claim 1 or 2, characterized in that: The feeding mechanism includes a mounting plate, a worktable, side plates, a Briggan structure material plate, a pressure sensor, a pressure plate, an embedded layer, an electromagnet, and a magnetic conductive layer. The mounting plate is fixedly connected to the slide block, and the mounting plate has sliding grooves on both sides that are slidably connected to the guide rail. The worktable is mounted on the mounting plate, and the pressure plate is mounted on the worktable via a support base. An embedded layer is connected to the lower side of the pressure plate, and an electromagnet is installed in the embedded layer. A magnetic conductive layer is installed on the lower side of the embedded layer. Side plates for guiding feeding are detachably mounted on both sides of the bottom of the magnetic conductive layer. A pressure sensor for controlling the feeding of the liquid conveying device is installed at the bottom of the side plates. The Briggan structure material plate is magnetically attracted between the side plates on the magnetic conductive layer.

4. The apparatus for preparing photocurable reinforced phase Brigand structures according to claim 3, characterized in that: The rotary indexing device includes a second motor and a main material trough. The main material trough is mounted on the top of the control box and control module via bearings. The control box and control module are equipped with a second motor connected to the main material trough. The second motor drives the main material trough to rotate, controlling the internal liquid material to form the helical angle between the Brigan structure layers.

5. The apparatus for preparing photocurable reinforced phase Brillouin structures according to claim 4, characterized in that: The control box and control module contain a power supply and control module.

6. The apparatus for preparing photocurable reinforced phase Brigand structures according to claim 5, characterized in that: The material conveying mechanism includes a first auxiliary material tank, a first fluid pump, a first solenoid valve, a second auxiliary material tank, a second fluid pump, a second solenoid valve, a conveying pipe, and a liquid level sensor. The first auxiliary material tank is connected to the first solenoid valve through the conveying pipe. The first solenoid valve is connected to the inlet of the first fluid pump through the conveying pipe. The outlet of the first fluid pump is connected to the inlet of the second auxiliary material tank through the conveying pipe. A liquid level sensor is installed inside the second auxiliary material tank. The outlet of the second auxiliary material tank is connected to the second solenoid valve through the conveying pipe. The second solenoid valve is connected to the inlet of the second fluid pump through the conveying pipe. The outlet of the second fluid pump extends to the main material tank through the conveying pipe.

7. The apparatus for preparing photocurable reinforced phase Brigand structures according to claim 6, characterized in that: A heat-conducting plate is installed at the bottom of the second auxiliary material tank. The heat-conducting plate at the bottom is provided with a sandwich layer. A heat radiation device embedding groove is provided in the sandwich layer. A heat radiation device is installed in the heat radiation device embedding groove. A heat insulation layer is provided at the bottom of the sandwich layer.

8. A method for preparing a photocurable reinforced phase Brigand structure, characterized in that: Using the photocurable reinforced phase Brigand structure preparation apparatus according to any one of claims 4-7, the preparation method comprises the following steps: Step 1: Calculate the electromagnetic attraction force of electromagnets with different currents on the Brigan material plate using mathematical formulas or calibration methods. Calculate the required adjustment of the digital potentiometer resistance value for each reduced layer of Brigan structural material plate using the second Newton's law of mechanics. Control the change of the digital potentiometer resistance value by pre-programming the circuit to achieve the change of current and electromagnetic attraction force in the preset circuit. Formula: When a DC solenoid electromagnet is installed, the electromagnetic attraction force can be calculated according to formula (1). （1） In the formula, Working air gap flux, unit: ; The working air gap magnetic induction intensity, unit: ; Let be the permeability of free space, and its value is . ; Magnetic circuit cross-sectional area, unit: , The air gap magnetic induction intensity of the DC electromagnet is （2） In the formula: N is the number of turns of the coil; U is the current intensity, in amperes (A); U is the voltage across the electromagnet, in volts (V). R1 is the wire winding resistance, in units of... ; The air gap length is in meters. Substituting equation (2) into equation (1), we get: （3） The relationship between voltage and current in the circuit is as follows: （4） In the formula, R is the resistance of the digital potentiometer, and R0 is the equivalent resistance of other devices in the circuit. Substituting equation (4) into equation (3), we get: （5） Formula (5) shows the relationship between the resistance of the digital potentiometer and the electromagnetic attraction force. The electromagnetic attraction force can be controlled by controlling the resistance of the digital potentiometer. Step 2: Pre-set the upper and lower limits of the liquid level sensor, and calculate the liquid volume between the upper and lower limits of the second auxiliary material tank corresponding to the liquid level height of the main material tank through mathematical formula. This controls the solidification of liquid at different heights in each layer, and the Brugon-reinforced phase structure formed after solidification at different layer heights also has different degrees of mechanical properties. Step 3: Prepare the Brigan structure material plate by engineering means. The material plate is attracted by the pre-set electromagnetic adsorption force. Before starting, pour the liquid into the auxiliary material tank and control the liquid level at the upper limit of the second auxiliary material tank by controlling the first solenoid valve and the second solenoid valve. Step 4: Control the lifting structure drive motor to control the worktable connected to the slide to move downward. When the pressure sensor at the bottom of the side plate fixed to the worktable changes pressure, that is, when the pressure sensor contacts the main material tank, the control system receives a feedback signal and adjusts the electromagnetic adsorption force to a force that reduces the weight of one layer of Brigan material plate compared to before by controlling the preset current adjustment law. As the electromagnetic adsorption force weakens, one layer of Brigan material plate falls into the main material tank. Then, the pressure sensor at the bottom of the tank detects the pressure change and sends a signal feedback. The control system controls the rotary indexing device to rotate a certain angle. The rotary indexing device drives the main material tank to rotate a certain angle through the cooperation of the protruding groove structure. At the same time, the lifting structure drive motor shaft reverses. Step 5: When the control module receives the electrical signal from the pressure sensor at the bottom of the material tank, it simultaneously controls the second solenoid valve to open. The second hydraulic pump then uses hydraulic pressure to transport the liquid from the second auxiliary material tank to the main material tank. When the liquid level in the second auxiliary material tank drops to the set lower limit, the liquid level sensor detects and transmits an electrical signal to the control system. The control system then controls the first solenoid valve to open and the second solenoid valve to close. The first hydraulic pump then uses hydraulic pressure to transport the liquid from the first auxiliary material tank to the second auxiliary material tank until the liquid level in the second auxiliary material tank rises to the set upper limit, at which point the first solenoid valve closes. Step 6: After the second auxiliary material tank delivers the set volume of liquid material to the main material tank, the control module controls the ultraviolet emitting device to turn on and controls the ultraviolet irradiation time through the timing device. This timing time should allow the liquid material to completely solidify. Step 7: Wait for the UV light emission time in step 6 to end. Based on the signal feedback from the timer, repeat steps 3 to 6 in sequence until the last layer of Brigan structure material plate falls into the main material tank and the liquid material covering the last layer of material plate is completely solidified.

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