A light-cured 3D printing precision forming equipment for customized product production

Abstract

The application relates to the field of 3D printing technology, in particular to a light-curing 3D printing precision forming equipment for customized product production, which comprises a bottom plate, a vertical plate arranged on the bottom plate and a printing equipment body arranged on the vertical plate; the equipment further comprises a cooling mechanism, the cooling mechanism comprises a telescopic component, an air pump, a pump body, a printing table, a rotating disc, a splicing cylinder, a plate a, a pipe a, a pipeline assembly and a box b; the printing table is connected with the box a; the splicing cylinder is sleeved outside the printing table; the telescopic component is arranged on a supporting plate and connected with the splicing cylinder; the plate a is arranged on the printing table; a notch matched with the plate a is arranged on the splicing cylinder; the rotating disc is rotatably arranged in the splicing cylinder; the pipe a is detachably connected with the rotating disc; the box b is arranged on the supporting plate; the pump body is in communication with the rotating disc and the box b through the pipeline assembly; and the air pump is in communication with the pipeline assembly. The application can dissolve and clean the resin on the surface of the product, cool the product in stages and avoid the phenomenon that the product is cracked due to stress caused by large temperature difference.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, specifically to a photopolymer 3D printing precision molding equipment for custom product manufacturing. Background Technology

[0002] Photopolymer 3D printing is an additive manufacturing technology that uses ultraviolet light to selectively cure liquid photosensitive resin and form layers one by one.

[0003] Chinese patent CN115350992A discloses a photopolymerization 3D printing precision molding device. The lifting unit moves up and down by driving the drive component, which first drives two printing tables to rotate around the longitudinal axis via the transmission unit. Then, the sealing cover on the cooling component covers the printing table carrying the product. Finally, the first transmission gear drives the printing table to rotate around the transverse axis for unloading. During this process, the 3D printing device can also print products on another printing table, realizing the integrated function of printing, cooling and unloading of multiple products, and has the characteristics of high working efficiency.

[0004] However, the aforementioned existing technologies have the following drawbacks: The existing technologies mainly cool the product by blowing cold air onto it, but the wind speed of the cold air is difficult to control, and strong winds can easily cause deformation of thin-walled parts. In addition, direct spraying of cold air may cause excessive temperature differences, leading to stress cracks in the product. Furthermore, 3D printed products need to be polished to a mirror finish, and the existing technologies cannot help workers polish the products. Workers need to use special tools to polish the products afterward, which limits the existing technologies. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a photopolymerization 3D printing precision molding equipment for customized product production.

[0006] The technical solution of this invention: A precision molding device for photopolymer 3D printing of customized products, comprising a base plate, a vertical plate on the base plate, and a printing device body on the vertical plate; further comprising:

[0007] The conversion mechanism includes a housing a, a rotating drum, a support plate, casters, a base, and a motor a; the base is located on the bottom plate; the rotating drum is rotatably located on the outer circumferential surface of the base; multiple support plates are provided and connected to the rotating drum; the housing is located at the top of the rotating drum; the casters are located at the bottom of the support plates; and the motor a is located on the base and its output end is connected to the housing.

[0008] The cooling mechanism includes a telescopic component, an air pump, a pump body, a print table, a turntable, a splicing cylinder, plate a, pipe a, a piping assembly, and a housing b. Multiple print tables are provided and connected to housing a. The splicing cylinder is fitted around the outside of the print table. The telescopic component is located on a support plate and connected to the splicing cylinder. Plate a is placed on the print table. The splicing cylinder has a notch adapted to plate a. A disc rotatably sits on the print table. The disc has a circular opening. The turntable rotatably sits inside the splicing cylinder, and pipe a passes through the circular opening and is detachably connected to the turntable. Housing b is located on the support plate. The pump body is connected to the turntable via the piping assembly. The air pump is connected to the piping assembly.

[0009] Preferably, plate a is provided with a drain pipe for draining the liquid in the splicing cylinder into the box a.

[0010] Preferably, the surface of tube a has multiple spray holes; the surface of tube a has multiple velvet structures for polishing the product.

[0011] Preferably, the pile structure is composed of elastic fibers and waterproof sandpaper; multiple elastic fibers are woven into a twisted shape; and waterproof sandpaper is wrapped around the surface of the elastic fibers.

[0012] Preferably, the interior of the box b is provided with a partition; the partition divides the interior of the box b into a solvent area and a water area.

[0013] Preferably, the turntable is hollow; a ring plate is provided at the bottom of the turntable for rotation.

[0014] Preferably, the piping assembly includes a tee pipe, a flexible hose, pipe b, and pipe c; the water outlet of the pump body is connected to the flexible hose; the air pump is connected to the flexible hose; the flexible hose is connected to the tee pipe; the tee pipe is connected to the annular plate; the water inlet of the pump body is connected to pipe b; pipe b is connected to the water tank and extends into the solvent zone; the portion of pipe b located in the solvent zone is equipped with a solenoid valve a; pipe c is connected to pipe b and extends into the clean water zone; a solenoid valve b is installed on pipe c.

[0015] Preferably, a motor b is provided at the bottom of the splicing cylinder, and the output end of the motor b is connected to the turntable; a column is provided at the center of the turntable, and the column is connected to the top and bottom of the inner side of the turntable.

[0016] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects:

[0017] By incorporating a conversion mechanism, printing stations at different locations are transported to the printing equipment in turn to facilitate printing operations. After printing is completed, the printing station carrying the product is transported away so that other printing stations can perform printing operations, ensuring that product printing and cooling are carried out simultaneously and improving efficiency.

[0018] By incorporating a cooling mechanism, the resin on the product surface can be dissolved and cleaned away, and the product can be cooled in stages. This allows for simultaneous cleaning and cooling, improving product processing efficiency and preventing stress cracks caused by large temperature differences.

[0019] By supplying clean water into the splicing cylinder, the product is polished using a waterproof sanding belt. At the same time, the velvet structure on pipe A facilitates polishing in the narrow spaces on the product surface. The water can effectively absorb the heat generated during polishing, effectively control and prevent dust dispersion, and also clean the dust generated during polishing of the product surface. Attached Figure Description

[0020] Figure 1 This is a perspective view of one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the conversion mechanism in the cross-sectional state of the rotating drum in one embodiment of the present invention;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the connection structure between the turntable cross-section and the motor b in one embodiment of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the water tank in one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the rotating cylinder, the box a, and the base in a cross-sectional state according to one embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional structural diagram of the printing platform and disk in one embodiment of the present invention.

[0027] Reference numerals: 1. Base plate; 2. Vertical plate; 3. Printing equipment; 4. Box a; 5. Rotary drum; 6. Base; 7. Plate a; 8. Splicing cylinder; 9. Telescopic component; 10. Pump body; 11. Telescopic hose; 12. Air pump; 13. Box b; 1301. Solvent area; 1302. Clean water area; 14. Support plate; 15. Casters; 16. Motor a; 17. Disc; 18. Printing table; 19. Pipe a; 20. Circular plate; 21. T-pipe; 22. Motor b; 23. Column; 24. Turntable; 25. Pipe b; 26. Pipe c; 27. Solenoid valve a; 28. Solenoid valve b. Detailed Implementation

[0028] Example 1, as Figure 1-4 as well as Figure 7 As shown, the present invention proposes a precision molding equipment for photopolymer 3D printing of customized products, including a base plate 1, a vertical plate 2 on the base plate 1, and a printing device 3 body on the vertical plate 2. The printing device 3 is existing technology, and its specific structure and working principle will not be described in detail here; it also includes a conversion mechanism and a cooling mechanism.

[0029] The conversion mechanism includes a housing a4, a rotating cylinder 5, a support plate 14, casters 15, a base 6, and a motor a16; the base 6 is mounted on the base plate 1; the rotating cylinder 5 is rotatably mounted on the outer circumferential surface of the base 6; the support plate 14 has multiple pieces and is connected to the rotating cylinder 5; the housing is located at the top of the rotating cylinder 5; the casters 15 are located at the bottom of the support plate 14, providing support for the support plate 14 and facilitating the circular motion of the support plate 14; the motor a16 is mounted on the base 6 and its output end is connected to the housing.

[0030] It should be noted that, depending on actual needs, the motor a16 and the base 6 can also be connected by transmission. The transmission connection method includes, but is not limited to, a gear a is provided at the bottom of the base 6, and a gear b that meshes with the gear a is connected to the output end of the motor a16.

[0031] It should be noted that the motor a16 drives the housing a4 to rotate intermittently, the housing a4 drives the rotating drum 5 to rotate, the rotating drum 5 drives the housing a4 to rotate and at the same time drives the support plate 14 to make a circular motion, and the housing a4 drives the printing table 18 to make a circular motion, so that the printing tables 18 at various locations rotate in turn to the bottom of the printing device 3 to perform printing operations.

[0032] It is worth noting that the motor a16 drives the housing a4 to rotate intermittently, rotating by 1 / N angle each time, where N is the number of support plates 14.

[0033] The cooling mechanism includes a telescopic component 9, an air pump 12, a pump body 10, a print table 18, a turntable 24, a splicing tube 8, a plate a7, a pipe a19, a piping assembly, and a housing b13. Multiple print tables 18 are provided and connected to the housing a4. The housing b13 has an internal partition; the partition divides the interior of the housing b13 into a solvent zone 1301 and a water zone 1302. The solvent zone 1301 contains IPA solution, and the water zone 1302 contains water. The splicing tube 8 is fitted around the outside of the print table 18. The telescopic component 9 is located on... The support plate 14 is connected to the splicing cylinder 8. The telescopic component 9 includes, but is not limited to, a cylinder. The telescopic component 9 can drive the splicing cylinder 8 to move up and down. Plate a7 is placed on the printing table 18. The splicing cylinder 8 has a notch that matches the plate a7. The splicing cylinder 8 and plate a7 are spliced ​​together to form a complete cylinder, which serves as a container for cooling the product. The inner wall of the notch and the outer circumference of plate a7 are provided with a rubber layer to enhance the sealing between the notch and plate a7 and prevent liquid leakage inside the splicing cylinder 8. A drain pipe is provided to drain the liquid in the splicing cylinder 8 into the housing a4; a disc 17 is rotatably mounted on the printing table 18; the disc 17 has a circular opening; a turntable 24 is rotatably mounted inside the splicing cylinder 8, and a pipe a19 passes through the circular opening and is detachably connected to the turntable 24. The turntable 24 has an opening, and the pipe a19 is connected to the opening by a threaded connection. The surface of the pipe a19 has multiple spray holes; the surface of the pipe a19 has multiple pile structures for polishing the product, and the pile structures are made of elastic fibers. Composed of waterproof sandpaper; multiple elastic fibers are woven into a twisted shape; waterproof sandpaper is wrapped around the surface of the elastic fibers; the box body b13 is set on the support plate 14; the pump body 10 is connected to the turntable 24 through the pipeline assembly; the air pump 12 is connected to the pipeline assembly; the turntable 24 is hollow; the bottom end of the turntable 24 is provided with a ring plate 20 for rotation; the bottom end of the splicing cylinder 8 is provided with a motor b22, and the output end of the motor b22 is connected to the turntable 24; a column 23 is provided at the center of the turntable 24, and the column 23 is connected to the top and bottom of the inner side of the turntable 24.

[0034] It should be noted that when the product needs to be cooled, the IPA solution in the solvent zone 1301 is transported through the pipeline assembly to the inside of pipe a19 by pump 10, and then sprayed out from the nozzle on the surface of pipe a19 into the splicing cylinder 8. The IPA solution can dissolve the uncured resin on the product surface, thus cleaning the product and absorbing some of the product's heat in advance. After cleaning, the IPA solution in the splicing cylinder 8 is discharged into the box a4 for recycling through the drain pipe. At this time, the IPA solution remaining on the product surface will evaporate and absorb the remaining heat of the product (IPA solution has the characteristic of rapid evaporation), thereby achieving simultaneous cleaning and cooling of the product, improving product processing efficiency, and preventing stress cracks caused by large temperature differences.

[0035] It is worth noting that motor b22 drives turntable 24 to rotate (see reference). Figure 4 Under the action of column 23, the function of motor b22 driving turntable 24 to rotate can be realized. Turntable 24 drives pipe a19 to rotate, which can stir the IPA solution and improve the cleaning power of IPA solution on the product. At the same time, the air pump 12 is used in conjunction with the pipeline assembly to pump air into the IPA solution (similar to cavitation effect), which further improves the cleaning power of IPA solution on the product (stirring can destroy the surface tension of resin residue, accelerate IPA penetration, and also rinse uncured resin in hidden structures (such as holes, cantilever).

[0036] It should be noted that clean water is delivered to the inside of the splicing cylinder 8 through the pump body 10. Waterproof sandpaper can be used to polish the product surface in the water. The water can effectively absorb the heat generated during polishing, effectively control and prevent dust from spreading, and also clean the dust generated during polishing of the product surface. For some grooves and other narrow spaces on the product surface, the tube a19 can be removed, and its surface velvet structure can be extended into the narrow space for polishing, thereby improving polishing efficiency.

[0037] It is worth noting that the elastic fibers are woven into a twisted shape, which can significantly improve toughness. When the pile structure extends into a narrow space, it can increase the contact force between the pile structure and the inner wall of the space, ensuring the effectiveness of the pile structure polishing.

[0038] Example 2, as Figure 3-5 As shown, this invention proposes a precision molding equipment for photopolymer 3D printing of customized products. Compared with Embodiment 1, this embodiment also details the specific structure of the piping assembly. The piping assembly includes a three-way pipe 21, a telescopic hose 11, pipe b25, and pipe c26. The water outlet of the pump body 10 is connected to the telescopic hose 11. The air pump 12 is connected to the telescopic hose 11. The telescopic hose 11 is connected to the three-way pipe 21. The three-way pipe 21 is connected to the annular plate 20. The water inlet of the pump body 10 is connected to pipe b25. Pipe b25 is connected to the water tank and extends into the solvent zone 1301. The portion of pipe b25 located in the solvent zone 1301 is equipped with a solenoid valve a27. Pipe c26 is connected to pipe b25 and extends into the clean water zone 1302. A solenoid valve b28 is provided on pipe c26.

[0039] It should be noted that when it is necessary to extract the IPA solution, solenoid valve a27 is opened while solenoid valve b28 is kept closed. Pump body 10 uses pipe b25 to extract the IPA solution from solvent zone 1301 and then pumps it into telescopic hose 11. Telescopic hose 11 then pumps it into T-connector 21, which pumps the IPA solution into turntable 24. Finally, it enters pipe a19 and is sprayed out from the nozzles on the surface of pipe a19 into splicing cylinder 8, thus achieving the cleaning and cooling functions of the product. After cleaning and cooling are completed, when it is necessary to polish the product, solenoid valve a27 is closed and solenoid valve b28 is opened. Pump body 10, in conjunction with pipe c26, extracts the clean water from clean water zone 1302 and pumps it into splicing cylinder 8, facilitating polishing of the product by the staff.

[0040] In summary, when using this invention, the motor a16 is turned on to drive the housing a4 to rotate intermittently. The housing a4 drives the rotating drum 5 to rotate, and the rotating drum 5 drives the housing a4 to rotate while simultaneously driving the support plate 14 to perform a circular motion. The housing a4 drives the printing table 18 to perform a circular motion, so that each printing table 18 rotates in turn to the bottom of the printing device 3 for printing. After printing, the motor a16 is turned on, causing the printing table 18 to rotate. When the printing table 18 carries the printed product away from the printing device 3, the telescopic component 9 is activated. The telescopic component 9 drives the splicing cylinder 8 to rise until the top of the turntable 24 contacts the bottom of the printing table 18. At this time, the notch on the splicing cylinder 8 and the plate a7 are completely spliced ​​to form a complete cylinder. Then, the pump body 10 and the solenoid valve a27 are turned on. The pump body 10 uses the pipe b25 to extract the IPA solution in the solvent area 1301 and then delivers it to the telescopic hose 11. The telescopic hose 11 then delivers it to the three-way pipe 21, and the three-way pipe 21 delivers the IPA solution to the... Inside the turntable 24, the solution finally enters the pipe a19 and is then sprayed out through the nozzles on the surface of the pipe a19 into the splicing cylinder 8 until the product is completely submerged in the IPA solution (a liquid level sensor can be installed inside the splicing cylinder 8, which will automatically send feedback to the external controller when the product is submerged in IPA solution or water, causing the pump 10 to stop working). The IPA solution can dissolve the uncured resin on the product surface, thus cleaning the product and absorbing some of the product's heat in advance. Then, the pump 10 is turned off, and the motor b22 and the air pump 12 are turned on. The motor b22 drives the turntable 24 to rotate, and the turntable 24 drives the pipe a19 to rotate, which can stir the IPA solution and increase the cleaning power of the IPA solution on the product. At the same time, the air pump 12, in conjunction with the pipeline assembly, pumps air into the IPA solution (similar to cavitation effect), further increasing the cleaning power of the IPA solution on the product (stirring can break the surface tension of the resin residue, accelerate the penetration of IPA, and also rinse the uncured resin in hidden structures (such as holes and cantilever).

[0041] After cleaning is completed (by checking the turbidity of the IPA solution or by setting a fixed cleaning time), turn off motor b22 and air pump 12, and drain the IPA solution in splicing cylinder 8 into tank a4 for recycling through the drain pipe. At this time, the residual IPA solution on the product surface will evaporate and absorb the remaining heat of the product (IPA solution has the characteristic of rapid evaporation), thereby achieving simultaneous product cleaning and cooling, improving product processing efficiency, and preventing stress cracks caused by large temperature differences.

[0042] After the IPA solution has completely evaporated, turn on pump 10 and solenoid valve b28. Pump 10, in conjunction with pipe c26, pumps clean water from the clean water zone 1302 into the splicing cylinder 8 until the product is submerged. Waterproof sandpaper can then be used to polish the product surface underwater. The water effectively absorbs the heat generated during polishing, effectively controls and prevents dust dispersion, and also cleans the dust generated during surface polishing. For small spaces such as grooves on the product surface, pipe a19 can be removed, and its surface texture can be extended into these spaces for polishing. The process involves polishing to improve efficiency (the elastic fibers are woven into a twisted shape, which significantly improves toughness; when the pile structure extends into a narrow space, it increases the contact force between the pile structure and the inner wall of the space, ensuring the effectiveness of the pile structure polishing). After polishing, the drain pipe can be opened to drain clean water into the tank A4 for recycling. At the same time, the debris and dust generated during polishing will also flow into the tank A4 for recycling. The tank A4 is equipped with a drain pipe. When the liquid in the tank A4 accumulates to a certain level, it can be drained through the drain pipe and the tank A4 can be cleaned.

[0043] After all the above operations are completed, remove the product, and then control the telescopic component 9 to lower and reset the splicing cylinder 8, so that the printing table 18 can move to the printing device 3 to perform the printing operation.

[0044] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A precision molding equipment for photopolymer 3D printing of customized products, comprising a base plate (1), a vertical plate (2) mounted on the base plate (1), and a printing device (3) body mounted on the vertical plate (2); characterized in that, Also includes: The conversion mechanism includes a housing a (4), a rotating cylinder (5), a support plate (14), casters (15), a base (6), and a motor a (16); the base (6) is located on the base plate (1); the rotating cylinder (5) is rotatably located on the outer circumference of the base (6); the support plate (14) has multiple pieces and is connected to the rotating cylinder (5); the housing is located at the top of the rotating cylinder (5); the casters (15) are located at the bottom of the support plate (14); the motor a (16) is located on the base (6) and its output end is connected to the housing; The cooling mechanism includes a telescopic component (9), an air pump (12), a pump body (10), a printing table (18), a turntable (24), a splicing tube (8), a plate a (7), a pipe a (19), a piping assembly, and a housing b (13); the printing table (18) is provided with multiple components and connected to the housing a (4); the splicing tube (8) is fitted around the outside of the printing table (18); the telescopic component (9) is provided on the support plate (14) and connected to the splicing tube (8); the plate a (7) is provided on the printing table (18) 18) On the splicing cylinder (8), there is a notch that matches the plate a (7); a disc (17) is rotatably mounted on the printing table (18); a round opening is provided on the disc (17); a turntable (24) is rotatably mounted inside the splicing cylinder (8), and pipe a (19) passes through the round opening and is detachably connected to the turntable (24); the box body b (13) is mounted on the support plate (14); the pump body (10) is connected to the turntable (24) through the pipeline assembly; the air pump (12) is connected to the pipeline assembly; The plate a (7) is provided with a drain pipe for discharging the liquid in the splicing cylinder (8) into the box a (4); the surface of the pipe a (19) is provided with multiple spray holes; the surface of the pipe a (19) is provided with multiple fluff structures for polishing the product; the fluff structure is composed of elastic fibers and waterproof sandpaper; multiple elastic fibers are woven into a twisted shape; waterproof sandpaper is wrapped around the surface of the elastic fibers.

2. The precision molding equipment for photopolymer 3D printing of customized products according to claim 1, characterized in that, The interior of box b (13) is provided with a partition; the partition divides the interior of box b (13) into a solvent area (1301) and a water area (1302).

3. The precision molding equipment for photopolymer 3D printing of customized products according to claim 2, characterized in that, The turntable (24) is hollow; the bottom of the turntable (24) is equipped with a ring plate (20) for rotation.

4. The photopolymer 3D printing precision molding equipment for customized product production according to claim 3, characterized in that, The piping assembly includes a tee pipe (21), a flexible hose (11), pipe b (25), and pipe c (26); the outlet of the pump body (10) is connected to the flexible hose (11); the air pump (12) is connected to the flexible hose (11); the flexible hose (11) is connected to the tee pipe (21); the tee pipe (21) is connected to the annular plate (20); the inlet of the pump body (10) is connected to pipe b (25); pipe b (25) is connected to the water tank and extends into the solvent area (1301); the portion of pipe b (25) located in the solvent area (1301) is equipped with a solenoid valve a (27); pipe c (26) is connected to pipe b (25) and extends into the clean water area (1302); a solenoid valve b (28) is equipped on pipe c (26).

5. The precision molding equipment for photopolymer 3D printing of customized products according to claim 1, characterized in that, The bottom end of the splicing cylinder (8) is equipped with a motor b (22), and the output end of the motor b (22) is connected to the turntable (24); the center of the turntable (24) is equipped with a column (23), and the column (23) is connected to the top and bottom of the inner side of the turntable (24).

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