3D printer for LCD photocuring printing of elastomer material

Abstract

The invention discloses a 3D printer of an LCD photocuring printing elastomer material, which relates to the field of 3D printers and comprises a protective shell, a printing base mounted on the protective shell, driving equipment arranged in the protective shell and printing equipment arranged on the driving equipment, the 3D printer for printing the elastomer material through the LCD light curing further comprises a sealing device installed on the protective shell. The sealing device comprises a sealing mechanism and an energy supply mechanism; the sealing mechanism comprises a sliding rail fixedly mounted on the protective shell, a connecting plate slidably mounted on the sliding rail and a sealing door fixedly mounted on the connecting plate, the connecting plate moves to drive the sealing door to start to move in the same direction, and the sealing door moves to seal the 3D printer to ensure that ultraviolet rays in the 3D printer cannot leak out; and meanwhile, dust and hair are prevented from falling into a resin groove, printing flaws, hole blocking and interlayer defects are avoided, and the printing success rate is increased.

Description

Technical Field

[0001] This invention relates to the field of 3D printer technology, and more specifically, to a 3D printer for printing elastomer materials using LCD photopolymerization. Background Technology

[0002] LCD photopolymer 3D printers are a type of photopolymer 3D printer that uses an LCD (liquid crystal display) as an ultraviolet light projection mask and is specially adapted to flexible and elastic photosensitive resins. The core of the solution is to optimize the release mechanism, temperature control, and matching of light source and material to solve problems such as high viscosity of elastomer resin, easy sticking to the board, springback after molding, and deformation.

[0003] Patent publication number CN205310840U relates to the field of 3D printer technology. The patent includes a housing containing a base, a worktable, a nozzle, a three-dimensional motion mechanism, a feeding unit, and a storage unit. The 3D printer is connected to a controller. A power supply is located under the base, and the controller is connected to the power supply. The three-dimensional motion mechanism is driven by a servo motor, which is electrically connected to the controller. The three-dimensional motion mechanism includes an X-axis motion mechanism, a Y-axis motion mechanism, and a Z-axis motion mechanism. The nozzle has a feeding drive device, which is electrically connected to the controller. The feeding unit includes several guide tubes, one end of which is connected to the nozzle, and the other end is connected to the storage unit. A valve controller is installed on the guide tube and is electrically connected to the controller. The worktable is located on the base.

[0004] The above solution includes a feeding unit comprising several guide tubes, one end of which is connected to the nozzle and the other end to the storage unit. A valve controller is provided on the guide tube and is electrically connected to the controller. The worktable is located on the base. However, the above solution has the problem that it is difficult to effectively protect the inside of the 3D printer during operation, which can easily lead to the external environment of the 3D printer excessively affecting the printing process. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a 3D printer for printing elastomer materials by LCD photocuring, which can reduce the influence of external airflow, and maintain the stability of resin temperature and viscosity by combining with material tank heating, thereby improving printing success rate and dimensional accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a 3D printer for printing elastomer materials using LCD photocuring, comprising a protective shell, a printing base mounted on the protective shell, a driving device disposed within the protective shell, and a printing device disposed on the driving device. The 3D printer for printing elastomer materials using LCD photocuring further includes a sealing device mounted on the protective shell. The sealing device includes a sealing mechanism for sealing the entrance at the front of the 3D printer when the 3D printer is working, and a power supply mechanism for moving the sealing mechanism when the 3D printer is working. By setting up a sealing mechanism and a power supply mechanism, the power supply mechanism can be driven to move and effectively seal the device when the printing operation begins. The sealing mechanism includes a slide rail fixedly mounted on the protective shell, a connecting plate slidably mounted on the slide rail, and a sealing door fixedly mounted on the connecting plate. The movement of the connecting plate causes the sealing door to move in the same direction, sealing the 3D printer and ensuring that the ultraviolet rays inside the 3D printer do not leak out, protecting the eyes and skin from UV light exposure. At the same time, it prevents dust and hair from falling into the resin tank, avoiding printing defects, blockages, and interlayer defects, reducing the impact of external airflow, and, in conjunction with the heating of the material tank, maintaining stable resin temperature and viscosity, thereby improving printing success rate and dimensional accuracy.

[0007] The power supply mechanism includes a sealing plate fixedly installed on the protective shell, a servo motor fixedly installed on the sealing plate, two rotating columns fixedly installed on the sealing plate, a transmission belt connected to the two rotating columns, and a fixing plate fixedly installed between the transmission belt and the connecting plate. The power supply mechanism ensures that the sealing mechanism can move normally to seal the entire 3D printer when the printing operation begins, thus ensuring the beneficial effect of sealing.

[0008] The rotating column is fixedly connected to the output end of the servo motor. A sliding groove is provided at the bottom of the sealing plate. The sealing door is in contact with the protective shell. The fixed connection ensures that the servo motor can drive the rotating column to rotate after starting. The sliding groove ensures that the fixed plate can move normally. The contact ensures that the sealing door can effectively seal the 3D printer.

[0009] The 3D printer for printing elastomer materials using LCD photopolymerization also includes a ventilation device installed on the protective housing; The ventilation device includes a ventilation mechanism for ventilating the interior of the 3D printer when the 3D printer is working, and a protective mechanism for sealing and protecting the air inlet when the work is finished. The ventilation and protection mechanisms ensure effective ventilation during printing and effective protection of the air inlet after printing is completed.

[0010] The ventilation mechanism includes a ventilation plate fixedly installed on the protective shell, a protective grille fixedly installed on the ventilation plate, and a fan fixedly installed inside the protective grille. When the 3D printer starts printing, the fan starts blowing air outward through the protective grille, allowing clean air to enter the 3D printer through the air inlet and accelerating the airflow inside.

[0011] The protection mechanism includes a closed ring rotatably mounted on the ventilation plate, a gear fixedly mounted on the closed ring, two partition plates fixedly mounted on the ventilation plate, a fixed rod fixedly mounted between the two partition plates, a sliding plate slidably mounted on the circumferential surface of the fixed rod, a rack fixedly mounted on the sliding plate, a first inclined block fixedly mounted on the sliding plate, and a first inclined rod fixedly mounted on the connecting plate. After the 3D printer finishes working, the connecting plate moves, causing the closed door to move in the same direction, while simultaneously causing the first inclined rod to move synchronously. This causes the first inclined rod to contact the first inclined block and push it to start moving. When the first inclined block moves, it causes the sliding plate to move in the same direction and compresses the spring. The movement of the sliding plate causes the rack to move in the same direction, and the movement of the rack causes the gear to start rotating. The rotation of the gear causes the closed ring to start rotating synchronously.

[0012] The ventilation plate has an air inlet, the rack meshes with the gear, the sides of the first inclined rod and the first inclined block that are close to each other are both set as inclined surfaces, and a spring is provided between the slide plate and the partition plate. The air inlet ensures effective ventilation, the meshing ensures that the rack can drive the gear to rotate when it moves, the inclined surfaces ensure that the first inclined rod can smoothly push the first inclined block to move when it moves, and the spring ensures that the slide plate can achieve self-reset.

[0013] The 3D printer for printing elastomer materials using LCD photopolymerization also includes a stabilizing device mounted on the protective housing; The stabilizing device includes a stabilizing mechanism for stabilizing the entire 3D printer when it is working, and a pushing mechanism for moving the stabilizing mechanism when it starts working. By setting up the driving mechanism and the stabilizing mechanism, the driving mechanism starts working synchronously when the machine starts working, and drives the stabilizing mechanism to start working, so as to achieve the beneficial effect of the overall stabilizing device stabilizing the machine. The stabilizing mechanism includes a slide rod fixedly mounted on the ventilation plate, a balance rod fixedly mounted on the ventilation plate, a slip ring slidably mounted on the circumferential surfaces of the slide rod and the balance rod, a top plate fixedly mounted on the slide rod, an elastic telescopic rod fixedly mounted on the circumferential surface of the slip ring, and a contact block fixedly mounted on the movable end of the elastic telescopic rod. The movement of the slide rod causes the rack to move in the same direction, simultaneously causing the connecting rod to move synchronously. The movement of the connecting rod causes the slip ring to move along the extension direction of the slide rod and compress the second spring. As the slip ring moves, it causes the elastic telescopic rod to move in the same direction. The movement of the elastic telescopic rod causes the contact block and the second inclined rod to move in the same direction. The second inclined rod then contacts the second inclined block. Subsequently, the second inclined rod continues to move downwards along the inclined surface of the second inclined block, causing the movable end of the elastic telescopic rod to move downwards. The movement of the movable end of the elastic telescopic rod causes the contact block to move downwards.

[0014] The pushing mechanism includes a connecting rod fixedly installed between the slide plate and the slip ring, an L-shaped rod fixedly installed on the protective shell, a second inclined block fixedly installed on the L-shaped rod, and a second inclined rod fixedly installed on the circumferential surface of the movable end of the elastic telescopic rod. The setting of the pushing mechanism ensures that the stabilizing mechanism can move normally during operation, thereby achieving the beneficial effect of stabilizing the machine.

[0015] The surfaces of the second inclined rod and the second inclined block that come into contact with each other are both set as inclined surfaces. A second spring is provided between the slip ring and the top plate. By setting the inclined surfaces, it is ensured that the second inclined rod can move smoothly along the inclined surface set by the second inclined block when it moves. By setting the second spring, it is ensured that the slip ring can achieve self-reset.

[0016] The beneficial effects of this invention are as follows: The 3D printer for printing elastomer materials using LCD photopolymerization provided by this invention moves a connecting plate, causing the sealing door to move in the same direction. This movement of the sealing door seals the 3D printer, ensuring that ultraviolet light inside the printer does not leak out, protecting the eyes and skin from UV radiation. It also prevents dust and hair from falling into the resin tank, avoiding printing defects, blockages, and interlayer defects. Furthermore, it reduces the impact of external airflow, and, in conjunction with material tank heating, maintains stable resin temperature and viscosity, improving printing success rate and dimensional accuracy. Additionally, it reduces external light interference, ensuring consistent exposure for each layer, resulting in more uniform elastomer molding and more stable mechanical properties.

[0017] By accelerating the airflow inside the 3D printer with a fan, the excess heat generated by the light source, LCD, and driver board is carried away, preventing localized overheating. Combined with the material tank temperature control system, this ensures a more stable resin temperature, more consistent flow and curing effect. Simultaneously, it accelerates the flow of resin volatile gases, and with external exhaust and filtration, reduces localized odor concentration and minimizes the accumulation of irritating gases. A rotating sealing ring closes the air inlets on the ventilation plate, preventing dust, hair, and small insects from entering the machine and adhering to the LCD screen, release film, light source, and resin tank surface, thus reducing printing defects, uneven light transmission, and the frequency of cleaning. It also reduces the inflow of humid and cold air from the outside. Combined with the sealing door 11, this creates a more stable internal environment, preventing rapid skinning and uneven curing of elastic resin residue, protecting electronic components from moisture, and preventing small debris from falling into moving parts through the air vents, reducing the risk of jamming and wear. Furthermore, it enhances safety when the machine is idle.

[0018] By moving the contact block downwards to contact the support surface, a rigid support is formed, fixing the platform position and preventing shaking and impact on the resin tank, LCD screen, and release film, thus reducing component damage. This provides multi-point support for the overall 3D printer, distributing the force and preventing micro-deformation of the frame, ensuring the overall structural accuracy of the machine. At the same time, it reduces fatigue of transmission components, structural stress, and damage to accessories, allowing the machine to maintain a state suitable for printing high-precision elastomer parts for a long time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the position and structure of the driving device and the printing device of the present invention; Figure 3 This is a cross-sectional view of the location and structure of the sealing device of the present invention; Figure 4 This is a cross-sectional view of the positional structure of the connecting plate and the fixing plate of the present invention; Figure 5 This is a cross-sectional view of the ventilation device of the present invention. Figure 6 This is a cross-sectional schematic diagram of the closed ring and gear position structure of the present invention; Figure 7 This is a cross-sectional view of the stabilizing device structure of the present invention; Figure 8 This is a cross-sectional view of the L-shaped rod and the second inclined block of the present invention.

[0020] In the picture: 1. Protective shell; 2. Printing base; 3. Drive device; 4. Printing device; 5. Enclosure plate; 6. Servo motor; 7. Rotary column; 8. Transmission belt; 9. Slide rail; 10. Connecting plate; 11. Enclosure door; 12. Fixing plate; 131. Ventilation plate; 132. Protective grille; 133. Fan; 134. Enclosure ring; 135. Gear; 136. Divider plate; 137. Fixing rod; 138. Slide plate; 139. Rack; 1310. First inclined block; 1311. First inclined rod; 141. Slide rod; 142. Balance bar; 143. Top plate; 144. Slip ring; 145. Connecting rod; 146. Elastic telescopic rod; 147. Contact block; 148. L-shaped rod; 149. Second inclined block; 1410. Second inclined rod. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-4 As shown, the embodiment provides: a 3D printer for printing elastomer materials using LCD photocuring, which includes a protective shell 1, a printing base 2 mounted on the protective shell 1, a driving device 3 disposed inside the protective shell 1, and a printing device 4 disposed on the driving device 3. The 3D printer for printing elastomer materials using LCD photocuring also includes: a sealing device mounted on the protective shell 1. The enclosure includes a sealing mechanism for sealing the entrance at the front of the 3D printer when the 3D printer is in operation, and a power supply mechanism for moving the sealing mechanism during operation of the 3D printer. By setting up a sealing mechanism and a power supply mechanism, the power supply mechanism can be driven to move and effectively seal the device when the printing operation begins. The sealing mechanism includes a slide rail 9 fixedly mounted on the protective shell 1, a connecting plate 10 slidably mounted on the slide rail 9, and a sealing door 11 fixedly mounted on the connecting plate 10. The movement of the connecting plate 10 drives the sealing door 11 to move in the same direction. The movement of the sealing door 11 seals the 3D printer, ensuring that the ultraviolet rays inside the 3D printer do not leak out, protecting the eyes and skin from UV light exposure. At the same time, it prevents dust and hair from falling into the resin tank, avoiding printing defects, clogging, and interlayer defects. It also reduces the influence of external airflow, and in conjunction with the heating of the material tank, maintains the resin temperature and viscosity stability, improves the printing success rate and dimensional accuracy, and reduces external light interference, ensuring consistent exposure of each layer, resulting in more uniform elastomer molding and more stable mechanical properties.

[0023] The power supply mechanism includes a sealing plate 5 fixedly installed on the protective shell 1, a servo motor 6 fixedly installed on the sealing plate 5, two rotating columns 7 fixedly installed on the sealing plate 5, a transmission belt 8 connected to the two rotating columns 7, and a fixing plate 12 fixedly installed between the transmission belt 8 and the connecting plate 10. The power supply mechanism ensures that the sealing mechanism can move normally to seal the entire 3D printer when the printing operation begins, thus ensuring the beneficial effect of sealing.

[0024] The rotating column 7 is fixedly connected to the output end of the servo motor 6. The bottom of the sealing plate 5 is provided with a sliding groove. The sealing door 11 is in contact with the protective shell 1. The fixed connection ensures that the servo motor 6 can drive the rotating column 7 to rotate after starting. The sliding groove ensures that the fixed plate 12 can move normally. The contact ensures that the sealing door 11 can effectively seal the 3D printer.

[0025] In this embodiment, the process is as follows: Before starting the 3D printer, a professional needs to inspect the entire 3D printer. After the inspection is completed and confirmed to be correct, the professional will confirm the model of the shoe to be printed, such as the sole model, upper model, or the overall shoe model. Once confirmed, the 3D printer will be started. The UV LED at the bottom of the printing base 2 emits ultraviolet light, which projects the shape of each layer of the model onto the LCD screen. The ultraviolet light irradiates the elastic photosensitive resin in the material tank, causing it to solidify into a soft solid sheet that adheres to the printing base 2. Subsequently, the printing device 4 is slowly and slightly raised under the drive of the drive device 3, and gently peeled off with a flexible release film to avoid tearing the soft layer. The material tank is heated to reduce the resin viscosity, and the new resin quickly flows and fills the gaps. The process of exposure, peeling, and raising is repeated to stack the layers one by one. Finally, the printer is cleaned and UV cured a second time to obtain a partial printed model of the shoe. As the operator starts the 3D printer and begins printing, the servo motor 6 starts synchronously, driving the rotating column 7 to rotate. The rotating column 7 then drives the transmission belt 8 to rotate around it. As the transmission belt 8 rotates, it causes the fixed plate 12 to move along the sealing plate 5. The movement of the fixed plate 12 causes the connecting plate 10 to move in the same direction along the slide rail 9. The movement of the connecting plate 10 causes the sealing door 11 to move in the same direction, sealing the 3D printer and preventing ultraviolet rays from leaking out. This protects the eyes and skin from UV light exposure, prevents dust and hair from falling into the resin tank, and avoids printing defects, blockages, and interlayer defects. It also reduces the impact of external airflow, and, in conjunction with the heating of the material tank, maintains stable resin temperature and viscosity, improving printing success rate and dimensional accuracy. Furthermore, it reduces external light interference, ensuring consistent exposure for each layer, resulting in more uniform elastomer molding and more stable mechanical properties.

[0026] Please see Figures 5-8Based on the above embodiments, in another embodiment of the present invention, the 3D printer for printing elastomer materials using LCD photocuring also includes a ventilation device installed on the protective housing 1; The ventilation system includes a ventilation mechanism for ventilating the interior of the 3D printer while it is working, and a protective mechanism for sealing and protecting the air inlet when the work is finished. The ventilation and protection mechanisms ensure effective ventilation during printing and effective protection of the air inlet after printing is completed.

[0027] The ventilation system includes a ventilation plate 131 fixedly installed on the protective housing 1, a protective grille 132 fixedly installed on the ventilation plate 131, and a fan 133 fixedly installed inside the protective grille 132. The fan 133 accelerates the airflow inside the 3D printer, removes the residual heat generated by the light source, LCD, and drive board, and avoids local overheating inside the machine. In conjunction with the material tank constant temperature system, it makes the resin temperature more stable, and the flow and curing effect more consistent. At the same time, it accelerates the flow of resin volatile gases. In conjunction with external exhaust and filtration, it reduces the concentration of local odors and reduces the accumulation of irritating gases.

[0028] The protective mechanism includes a closed ring 132 rotatably mounted on the ventilation plate 131, a gear 133 fixedly mounted on the closed ring 132, two partition plates 136 fixedly mounted on the ventilation plate 131, a fixed rod 137 fixedly mounted between the two partition plates 136, a sliding plate 138 slidably mounted on the circumference of the fixed rod 137, a rack 139 fixedly mounted on the sliding plate 138, a first inclined block 1310 fixedly mounted on the sliding plate 138, and a first inclined rod 1311 fixedly mounted on the connecting plate 10, which rotates via the closed ring 134. By sealing the air inlet on the ventilation plate 131, dust, hair, and small flying insects are prevented from entering the machine and adhering to the surfaces of the LCD screen, release film, light source, and resin tank. This reduces printing defects, uneven light transmission, and cleaning frequency. It also reduces the inflow of humid and cold air from the outside. Together with the sealed door 11, it makes the internal environment of the machine more stable, which is conducive to preventing the elastic resin residue from forming a skin quickly and curing unevenly. It also prevents electronic components from getting damp and prevents small debris from falling into the moving parts inside the machine through the air inlet, reducing the risk of jamming and wear. At the same time, it further improves safety when the machine is not in use.

[0029] The ventilation plate 131 has an air inlet, the rack 139 meshes with the gear 133, the sides of the first inclined rod 1311 and the first inclined block 1310 that are close to each other are both set as inclined surfaces, and a spring is set between the slide plate 138 and the partition plate 136. The air inlet ensures effective ventilation, the meshing ensures that the rack 139 can drive the gear 133 to rotate when it moves, the inclined surfaces ensure that the first inclined rod 1311 can smoothly push the first inclined block 1310 to move when it moves, and the spring ensures that the slide plate 138 can achieve self-reset.

[0030] The 3D printer for printing elastomer materials using LCD photopolymerization also includes a stabilizing device mounted on the protective housing 1; The stabilization device includes a stabilization mechanism for stabilizing the entire 3D printer while it is working, and a push mechanism for moving the stabilization mechanism when it starts working. By setting up the driving mechanism and the stabilizing mechanism, the driving mechanism starts working synchronously when the machine starts working, thereby driving the stabilizing mechanism to start working as well, so as to achieve the beneficial effect of the overall stabilizing device and the stabilizing machine. The stabilizing mechanism includes a slide bar 141 fixedly mounted on the ventilation plate 131, a balance bar 142 fixedly mounted on the ventilation plate 131, a slip ring 144 slidably mounted on the circumferential surfaces of the slide bar 141 and the balance bar 142, a top plate 143 fixedly mounted on the slide bar 141, an elastic telescopic bar 146 fixedly mounted on the circumferential surface of the slip ring 144, and a contact block 147 fixedly mounted on the movable end of the elastic telescopic bar 146. By moving the contact block 147 downward to contact the support surface, a rigid support is formed, the platform position is fixed, and shaking and impact on the resin tank, LCD screen, and release film are prevented, thus reducing component damage. It provides multi-point support for the overall 3D printer, distributes the force, avoids micro-deformation of the frame, ensures the structural accuracy of the whole machine, and reduces fatigue of transmission components, structural stress, and damage to accessories, allowing the machine to maintain a state suitable for printing high-precision elastomer parts for a long time.

[0031] The pushing mechanism includes a connecting rod 145 fixedly installed between the slide plate 138 and the slip ring 144, an L-shaped rod 148 fixedly installed on the protective housing 1, a second inclined block 149 fixedly installed on the L-shaped rod 148, and a second inclined rod 1410 fixedly installed on the circumferential surface of the movable end of the elastic telescopic rod 146. The setting of the pushing mechanism ensures that the stabilizing mechanism can move normally and achieves the beneficial effect of stabilizing the machine.

[0032] The surfaces of the second inclined rod 1410 and the second inclined block 149 that come into contact with each other are both set as inclined surfaces. A second spring is provided between the slip ring 144 and the top plate 143. By setting the inclined surfaces, it is ensured that the second inclined rod 1410 can move smoothly along the inclined surface set by the second inclined block 149 when it moves. By setting the second spring, it is ensured that the slip ring 144 can achieve self-reset.

[0033] In this embodiment, during operation: When the 3D printer begins printing, the fan 133 starts operating synchronously and blows air outward through the protective grille 132, creating negative pressure inside the 3D printer. This allows clean external air to enter the 3D printer through the air inlet, accelerating the internal airflow and carrying away residual heat generated by the light source, LCD, and driver board, preventing localized overheating. Combined with the material tank temperature control system, this ensures more stable resin temperature, more consistent flow and curing effect, and accelerates the flow of resin volatile gases. Combined with external exhaust and filtration, this reduces localized odor concentration and minimizes the accumulation of irritating gases. After the 3D printer finishes printing, the connecting plate 10 moves, causing the sealing door 11 to move in the same direction, simultaneously moving the first inclined rod 1311. This causes the first inclined rod 1311 to contact the first inclined block 1310 and push it to move. When the first inclined block 1310 moves, it drives the slide plate 138 to move in the same direction and compress the spring. The movement of the slide plate 138 drives the rack 139 to move in the same direction. When the rack 139 moves, it drives the gear 135 to rotate. The rotation of the gear 135 drives the sealing ring 134 to rotate synchronously. The rotation of the sealing ring 134 seals the air inlet on the ventilation plate 131, preventing dust, hair, and small flying insects from entering the machine and avoiding them from adhering to the surface of the LCD screen, release film, light source, and resin tank. This reduces printing defects, uneven light transmission, and cleaning frequency. At the same time, it reduces the inflow of external humid air and cold air. Together with the sealing door 11, it makes the internal environment of the machine more stable, which is conducive to the elastic resin residue not forming a skin quickly and curing unevenly. It can also prevent electronic components from getting damp and prevent small debris from falling into the moving parts inside the machine through the air vent, reducing the risk of jamming and wear. At the same time, it further improves the safety when idle.

[0034] As the slide plate 138 moves, it drives the rack 139 to move in the same direction, simultaneously causing the connecting rod 145 to move synchronously. The connecting rod 145 then drives the slip ring 144 to move along the extension direction of the slide rod 141 and compress the second spring. The slip ring 144, while moving, drives the elastic telescopic rod 146 to move in the same direction. The elastic telescopic rod 146 then drives the contact block 147 and the second inclined rod 1410 to move in the same direction. The second inclined rod 1410 contacts the second inclined block 149, which remains stationary due to the fixation of the L-shaped rod 148. Subsequently, the second inclined rod 1410 continues to move downwards along the inclined surface of the second inclined block 149, causing the movable end of the elastic telescopic rod 146 to move downwards. The movement of the movable end of the elastic telescopic rod 146 causes the contact block 147 to open... The contact block 147 moves downwards to contact the support surface, ensuring rigid support and fixing the platform position. This prevents shaking and impact on the resin tank, LCD screen, and release film, reducing component damage. It provides multi-point support for the overall 3D printer, distributing stress and preventing micro-deformation of the frame, ensuring the overall structural accuracy. It also reduces fatigue of transmission components, structural stress, and damage to parts, allowing the machine to maintain a state suitable for printing high-precision elastomer parts for a long time. When starting work, the connecting rod 145 no longer drives the slip ring 144 to move. Subsequently, the slip ring 144 begins to move and reset under the action of the spring. The movement of the slip ring 144 drives the elastic telescopic rod 146 to move and reset. The movement of the elastic telescopic rod 146 drives the contact block 147 to move and reset. The contact block 147 no longer needs additional support to move and reset.

[0035] Other techniques in this embodiment are based on existing technologies.

[0036] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A 3D printer for printing elastomer materials using LCD photopolymerization, comprising a protective housing (1), a printing base (2) mounted on the protective housing (1), a drive device (3) disposed within the protective housing (1), and a printing device (4) disposed on the drive device (3), characterized in that, The 3D printer for printing elastomer materials using LCD photopolymerization also includes: a sealing device installed on the protective housing (1); The sealing device includes a sealing mechanism for sealing the entrance at the front of the 3D printer when the 3D printer is working, and a power supply mechanism for moving the sealing mechanism when the 3D printer is working. The enclosure mechanism includes a slide rail (9) fixedly installed on the protective shell (1), a connecting plate (10) slidably installed on the slide rail (9), and an enclosure door (11) fixedly installed on the connecting plate (10).

2. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 1, characterized in that: The power supply mechanism includes a closed plate (5) fixedly installed on the protective shell (1), a servo motor (6) fixedly installed on the closed plate (5), two rotating columns (7) fixedly installed on the closed plate (5), a transmission belt (8) connected to the two rotating columns (7), and a fixed plate (12) fixedly installed between the transmission belt (8) and the connecting plate (10).

3. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 2, characterized in that: The rotating column (7) is fixedly connected to the output end of the servo motor (6), the bottom of the sealing plate (5) is provided with a sliding groove, and the sealing door (11) is in contact with the protective shell (1).

4. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 1, characterized in that: The 3D printer for printing elastomer materials using LCD photopolymerization also includes a ventilation device installed on the protective housing (1); The ventilation device includes a ventilation mechanism for ventilating the interior of the 3D printer while it is operating, and a protective mechanism for sealing and protecting the air inlet when the operation is finished.

5. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 4, characterized in that: The ventilation mechanism includes a ventilation plate (131) fixedly installed on the protective housing (1), a protective grille (132) fixedly installed on the ventilation plate (131), and a fan (133) fixedly installed inside the protective grille (132).

6. The 3D printer for printing LCD photopolymer elastomer materials according to claim 5, characterized in that: The protection mechanism includes a closed ring (132) rotatably mounted on the ventilation plate (131), a gear (133) fixedly mounted on the closed ring (132), two partition plates (136) fixedly mounted on the ventilation plate (131), a fixed rod (137) fixedly mounted between the two partition plates (136), a sliding plate (138) slidably mounted on the circumferential surface of the fixed rod (137), a rack (139) fixedly mounted on the sliding plate (138), a first inclined block (1310) fixedly mounted on the sliding plate (138), and a first inclined rod (1311) fixedly mounted on the connecting plate (10).

7. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 6, characterized in that: The ventilation plate (131) has an air inlet, the rack (139) meshes with the gear (133), the first inclined rod (1311) and the first inclined block (1310) are both set as inclined surfaces on their sides, and a spring is provided between the slide plate (138) and the partition plate (136).

8. The 3D printer for printing elastomer materials using LCD photopolymerization according to claim 1, characterized in that: The 3D printer for printing elastomer materials using LCD photocuring also includes a stabilizing device mounted on the protective housing (1); The stabilizing device includes a stabilizing mechanism for stabilizing the entire 3D printer when it is working, and a pushing mechanism for moving the stabilizing mechanism when it starts working. The stabilizing mechanism includes a slide rod (141) fixedly mounted on the ventilation plate (131), a balance rod (142) fixedly mounted on the ventilation plate (131), a slip ring (144) slidably mounted on the circumferential surfaces of the slide rod (141) and the balance rod (142), a top plate (143) fixedly mounted on the slide rod (141), an elastic telescopic rod (146) fixedly mounted on the circumferential surface of the slip ring (144), and a contact block (147) fixedly mounted on the movable end of the elastic telescopic rod (146).

9. The 3D printer for printing LCD photopolymer elastomer materials according to claim 8, characterized in that: The pushing mechanism includes a connecting rod (145) fixedly installed between the slide plate (138) and the slip ring (144), an L-shaped rod (148) fixedly installed on the protective shell (1), a second inclined block (149) fixedly installed on the L-shaped rod (148), and a second inclined rod (1410) fixedly installed on the circumferential surface of the movable end of the elastic telescopic rod (146).

10. The 3D printer for printing LCD photopolymer elastomer materials according to claim 9, characterized in that: The sides of the second inclined rod (1410) and the second inclined block (149) that are in contact with each other are both set as inclined surfaces, and a spring is provided between the slip ring (144) and the top plate (143).

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