Photocuring 3D printing precision forming equipment for customized product production

Abstract

The invention relates to the technical field of 3D printing, in particular to photocuring 3D printing precision forming equipment for customized product production, which comprises a bottom plate, a vertical plate is arranged on the bottom plate, and a printing equipment body is arranged on the vertical plate; 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 body b; the printing table is connected with the box body a; the splicing cylinder sleeves the outer side of the printing table; the telescopic part is arranged on the supporting plate and is connected with the splicing cylinder; the plate a is arranged on the printing table; a notch matched with the plate a is formed in the splicing cylinder; the turntable is rotationally arranged in the splicing cylinder, and the pipe a is detachably connected with the turntable; the box body b is arranged on the supporting plate; the pump body is communicated with the turntable and the box body b through a pipeline assembly; the air pump communicates with the pipeline assembly. Resin on the surface of a product can be dissolved and cleaned away, the product can be cooled in stages, and meanwhile the phenomenon that stress cracks are generated due to large temperature difference of the product is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly to a precision forming device for light-curing 3D printing in the production of customized products. Background Art

[0002] Stereolithography 3D printing is an additive manufacturing technology that selectively cures liquid photosensitive resin layer by layer through ultraviolet light.

[0003] Chinese Patent with the publication number CN115350992A discloses a precision forming device for stereolithography 3D printing; the lifting part drives the driving component to move up and down, so that the driving component first drives two printing platforms to rotate around the longitudinal rotating shaft through the transmission part, and then drives the sealing cover on the cooling component to cover above the printing platform carrying the product, and finally drives the printing platform to rotate around the transverse rotating shaft through the first transmission gear for blanking. During this process, the 3D printing device can also print products on another printing platform, realizing the functions of printing, cooling and blanking of multiple products in one, and having the characteristics of high working efficiency.

[0004] However, the above-mentioned prior art has the following defects: the above-mentioned prior art cools the product mainly by blowing cold air towards the product to achieve the cooling of the product, but the wind speed of the cold air flow is inconvenient to control, and strong wind is likely to cause deformation of thin-walled parts. In addition, the direct injection of the cold air flow may cause too large a temperature difference, resulting in stress cracks in the product; in addition, the surface of the product printed by 3D printing needs to be polished to a mirror effect. The above-mentioned prior art cannot help the staff to polish the product, and the staff needs to use tools to polish the product specially later, resulting in limitations of the above-mentioned prior art. Summary of the Invention

[0005] The purpose of the present invention is to propose a precision forming device for light-curing 3D printing in the production of customized products aiming at the problems existing in the background art.

[0006] The technical solution of the present invention: A precision forming device for light-curing D printing in the production of customized products includes a bottom plate, a vertical plate is provided on the bottom plate, and a printing device body is provided on the vertical plate; it further includes:

[0007] A conversion mechanism, which includes a box a, a rotating cylinder, a supporting plate, casters, a base and a motor a; the base is provided on the bottom plate; the rotating cylinder is rotatably provided on the outer peripheral surface of the base, multiple supporting plates are provided and connected to the rotating cylinder; the box is provided at the top of the rotating cylinder; the casters are provided at the bottom of the supporting plate; the motor a is provided on the base and its output end is connected to the box;

[0008] The cooling mechanism comprises a telescopic component, an air pump, a pump body, a printing table, a turntable, a splicing cylinder, a plate a, a tube a, a pipeline assembly and a box b; the printing table is provided with a plurality of them and connected with the box a; the splicing cylinder is sleeved on the outside of the printing table; the telescopic component is arranged on the support plate and connected with the splicing cylinder; the plate a is arranged on the printing table; a notch matching with the plate a is provided on the splicing cylinder; a disc is rotatably provided on the printing table; a round opening is provided on the disc; the turntable is rotatably arranged in the splicing cylinder, and the tube a passes through the round opening and is detachably connected with the turntable; the box b is arranged on the support plate; the pump body is connected with the turntable through the pipeline assembly; the air pump is connected with the pipeline assembly.

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

[0010] Preferably, a plurality of spray holes are provided on the surface of the tube a; a plurality of fluff structures are provided on the surface of the tube a for polishing the product.

[0011] Preferably, the fluff structure is composed of elastic fibers and waterproof sandpaper; a plurality of elastic fibers are woven into a twist shape; and the waterproof sandpaper is wrapped on the surface of the elastic fibers.

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

[0013] Preferably, the turntable is hollow; an annular plate is rotatably provided at the bottom end of the turntable.

[0014] Preferably, the pipeline assembly includes a tee, a telescopic hose, a tube b and a tube c; the water outlet end of the pump body is connected to the telescopic hose; the air pump is connected to the telescopic hose; the telescopic hose is connected to the tee; the tee is connected to the annular plate; the water inlet end of the pump body is connected to the tube b; the tube b is connected to the water tank and extends into the solvent area; the portion of the tube b located in the solvent area is provided with an electromagnetic valve a; the tube c is connected to the tube b and extends into the clean water area; the tube c is provided with an electromagnetic valve b.

[0015] Preferably, a motor b is provided at the bottom end 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 inner top and bottom of the turntable.

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

[0017] By providing a conversion mechanism, the printing tables at different positions are transported to the printing equipment in turn to facilitate printing operations. After printing is completed, the printing table carrying the product is transported away so that other printing tables can carry out printing operations, ensuring that the printing and cooling of the product are carried out simultaneously, thereby improving efficiency.

[0018] By providing a cooling mechanism, the resin on the surface of the product can be dissolved and cleaned, and the product can be cooled in stages, so that product cleaning and cooling can be carried out simultaneously, improving product processing efficiency, and at the same time avoiding the phenomenon of stress cracks in the product caused by large temperature differences.

[0019] By delivering clean water to the inside of the splicing tube, the product is polished with a waterproof sanding belt, and the fluff structure on the tube a is used to polish the narrow space on the product surface. Water can effectively absorb the heat generated by polishing, and can effectively control and avoid dust dispersion, and can also clean the dust generated by polishing the product surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of an embodiment of the present invention;

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

[0022] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 4 A schematic diagram of the connection structure between the cross-sectional state of the turntable and the motor b in an embodiment of the present invention;

[0024] Figure 5 A schematic cross-sectional structure diagram of a water tank in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the connection structure of the rotating drum with the box a and the base in a cross-section state in an embodiment of the present invention;

[0026] Figure 7 This is a schematic cross-sectional structure diagram of a printing table and a disc in an embodiment of the present invention.

[0027] Figure numerals: 1. bottom plate; 2. vertical plate; 3. printing device; 4. box a; 5. rotating 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. caster; 16. motor a; 17. disc; 18. printing table; 19. pipe a; 20. annular plate; 21. three-way pipe; 22. motor b; 23. cylinder; 24. turntable; 25. pipe b; 26. pipe c; 27. solenoid valve a; 28. solenoid valve b. DETAILED DESCRIPTION

[0028] Embodiment 1, as Figures 1-4 as well asFigure 7 As shown, the present invention proposes a light-curing 3D printing precision molding device for customized product production, including a base plate 1, a vertical plate 2 is provided on the base plate 1, and a printing device 3 body is provided on the vertical plate 2. The printing device 3 is a prior art, and its specific structure and working principle are not described here; it also includes a conversion mechanism and a cooling mechanism;

[0029] The conversion mechanism includes a box a4, a rotating drum 5, a support plate 14, a caster 15, a base 6 and a motor a16; the base 6 is arranged on the bottom plate 1; the rotating drum 5 is rotatably arranged on the outer peripheral surface of the base 6, and the support plate 14 is provided with multiple pieces and connected to the rotating drum 5; the box is arranged at the top of the rotating drum 5; the caster 15 is arranged at the bottom end of the support plate 14, which plays a supporting role for the support plate 14, so that the support plate 14 can make a circular motion; the motor a16 is arranged on the base 6 and its output end is connected to the box;

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

[0031] It should be noted that the motor a16 drives the box a4 to rotate intermittently, the box a4 drives the drum 5 to rotate, the drum 5 drives the box a4 to rotate and at the same time drives the support plate 14 to make a circular motion, the box 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 box a4 to rotate intermittently, each time rotating 1 / N angle, 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 printing table 18, a turntable 24, a splicing cylinder 8, a plate a7, a pipe a19, a pipeline assembly, and a box body b13; multiple printing tables 18 are provided and connected to the box body a4, and a partition is provided inside the box body b13; the partition divides the interior of the box body b13 into a solvent area 1301 and a clear water area 1302. IPA solution is stored in the solvent area 1301, and clear water exists in the clear water area 1302; the splicing cylinder 8 is sleeved outside the printing table 18; the telescopic component 9 is provided on the support plate 14 and connected to the splicing cylinder 8. The telescopic component 9 includes, but is not limited to, devices such as a cylinder. The telescopic component 9 can drive the splicing cylinder 8 to perform lifting motion; the plate a7 is provided on the printing table 18; the splicing cylinder 8 is provided with a notch adapted to the plate a7. The splicing cylinder 8 and the plate a7 are spliced into a complete cylinder body, serving as a container for cooling the product. Rubber layers are provided on the inner wall of the notch and the outer peripheral surface of the plate a7, which can enhance the sealing between the notch and the plate a7 and prevent liquid leakage inside the splicing cylinder 8. A drain pipe is provided on the plate a7 for discharging the liquid in the splicing cylinder 8 into the box body a4; a disc 17 is rotatably provided on the printing table 18; a circular opening is provided on the disc 17; the turntable 24 is rotatably provided inside the splicing cylinder 8. While the pipe a19 passes through the circular opening, it is detachably connected to the turntable 24. An opening is provided on the turntable 24, and the pipe a19 is connected to the opening by means of a threaded connection. Multiple spray holes are provided on the surface of the pipe a19; multiple fluff structures are provided on the surface of the pipe a19 for polishing the product. The fluff structure is composed of elastic fibers and waterproof sandpaper; multiple elastic fibers are woven into a twisted shape; the waterproof sandpaper is wrapped on the surface of the elastic fibers; the box body b13 is provided on the support plate 14; the pump body 10 is communicated with the turntable 24 through the pipeline assembly; the air pump 12 is communicated with the pipeline assembly; the turntable 24 is hollow; a ring plate 20 is rotatably provided at the bottom end of the turntable 24, and a motor b22 is provided at the bottom end of the splicing cylinder 8. 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 inner top and bottom ends of the turntable 24.

[0034] It should be noted that when it is necessary to cool the product, the pump body 10 is used to transport the IPA solution in the solvent area 1301 to the inside of the pipe a19 through the pipeline assembly, and then it is sprayed from the spray holes on the surface of the pipe a19 into the splicing cylinder 8; the IPA solution can dissolve the uncured resin on the surface of the product, play a cleaning role on the product, and at the same time pre-absorb part of the heat of the product; after the cleaning is completed, the IPA solution in the splicing cylinder 8 is discharged into the box body a4 through the drain pipe for recovery; at this time, the remaining IPA solution on the surface of the product will volatilize and absorb the remaining heat of the product (the IPA solution has the characteristic of rapid volatilization), so as to realize the simultaneous cleaning and cooling of the product, improve the product processing efficiency, and at the same time avoid the phenomenon of stress cracks caused by large temperature differences in the product.

[0035] It should be noted that the motor b22 drives the turntable 24 to rotate (refer toFigure 4 , under the action of the cylinder 23, the function that the motor b22 drives the turntable 24 to rotate can be realized). The turntable 24 drives the pipe a19 to rotate, which can stir the IPA solution and improve the cleaning strength of the IPA solution on the product; at the same time, the air pump 12 is used in cooperation with the pipeline assembly to pump air into the IPA solution (similar to the cavitation effect), further improving the cleaning strength of the IPA solution on the product (stirring can break the surface tension of the resin residue, accelerate the penetration of IPA and can wash the uncured resin in the hidden structures (such as holes, cantilevers)).

[0036] It should be noted that the clear water is transported to the inside of the splicing cylinder 8 through the pump body 10. The waterproof sandpaper can be used to polish the surface of the product in water. The water can effectively absorb the heat generated by polishing, and at the same time, it can effectively control and avoid the dispersion of dust, and can also clean the dust generated by polishing the surface of the product; for some narrow spaces such as grooves on the surface of the product, the pipe a19 can be removed, and by extending the fluff structure on its surface into the narrow space, it can be polished to improve the polishing efficiency.

[0037] It is worth noting that the elastic fiber is woven into a twist shape, which can significantly improve the toughness. When the fluff structure extends into the narrow space, the contact force between the fluff structure and the inner wall of the space can be increased, ensuring the effectiveness of the fluff structure for polishing.

[0038] Embodiment 2, as Figures 3-5 shown, a light-curing 3D printing precision forming device for custom product production proposed by the present invention. Compared with Embodiment 1, this embodiment also details the specific structure of the pipeline assembly. The pipeline assembly includes a tee pipe 21, a telescopic hose 11, a pipe b25 and a pipe c26; the water outlet end of the pump body 10 is communicated with the telescopic hose 11; the air pump 12 is communicated with the telescopic hose 11; the telescopic hose 11 is communicated with the tee pipe 21; the tee pipe 21 is communicated with the annular plate 20; the water inlet end of the pump body 10 is communicated with the pipe b25; the pipe b25 is communicated with the water tank and extends into the solvent area 1301; a solenoid valve a27 is provided on the part of the pipe b25 located in the solvent area 1301; the pipe c26 is communicated with the pipe b25 and extends into the clear water area 1302; a solenoid valve b28 is provided on the pipe c26.

[0039] It should be noted that when it is necessary to extract the IPA solution, the solenoid valve a27 is opened, and the solenoid valve b28 is kept closed. The pump body 10 extracts the IPA solution in the solvent area 1301 through the pipe b25 and then transports it to the inside of the telescopic hose 11 by the pump body 10. Then it is transported to the tee 21 by the telescopic hose 11. The tee 21 transports the IPA solution to the inside of the turntable 24 and finally enters the pipe a19 and is sprayed out through the spray holes on the surface of the pipe a19 into the splicing cylinder 8 to realize the cleaning and cooling functions of the product. After the cleaning and cooling are completed; when it is necessary to polish the product, the solenoid valve a27 is closed, the solenoid valve b28 is opened, and the pump body 10 is used to cooperate with the pipe c26 to extract the clean water in the clean water area 1302 and transport it into the splicing cylinder 8 to facilitate the staff to polish the product.

[0040] In summary, when the present invention is used, the motor a16 is started to drive the box body a4 to rotate intermittently. The box body a4 drives the rotating cylinder 5 to rotate. The rotating cylinder 5 drives the box body a4 to rotate and at the same time drives the support plate 14 to make a circular motion. The box body a4 drives the printing table 18 to make a circular motion, so that each printing table 18 rotates in turn under the printing device 3 for printing operations; after printing, the motor a16 works to make the printing table 18 rotate. When the printing table 18 drives the printed product away from the printing device 3, the telescopic member 9 is started. The telescopic member 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 is completely joined with the plate a7 to form a complete cylinder. Then the pump body 10 and the solenoid valve a27 are opened. The pump body 10 extracts the IPA solution in the solvent area 1301 through the pipe b25 and then transports it to the inside of the telescopic hose 11 by the pump body 10. Then it is transported to the tee 21 by the telescopic hose 11. The tee 21 transports the IPA solution to the inside of the turntable 24 and finally enters the pipe a19 and is sprayed out through the spray holes on the surface of the pipe a19 into the splicing cylinder 8 until the IPA solution submerges the product (a liquid level sensor can be set inside the splicing cylinder 8. When the IPA solution or clean water submerges the product, it will automatically feedback to the external controller to stop the pump body 10). The IPA solution can dissolve the uncured resin on the surface of the product, play a cleaning role for the product, and at the same time pre-absorb part of the heat of the product; then the pump body 10 is closed, the motor b22 and the air pump 12 are started. The motor b22 drives the turntable 24 to rotate. The turntable 24 drives the pipe a19 to rotate, which can stir the IPA solution and improve the cleaning strength of the IPA solution on the product; at the same time, the air pump 12 is used to cooperate with the pipeline assembly to pump air into the IPA solution (similar to the cavitation effect) to further improve the cleaning strength of the IPA solution on the product (stirring can break the surface tension of the resin residue, accelerate the penetration of IPA and can wash the uncured resin in the hidden structures (such as holes, cantilevers)).

[0041] After the cleaning is completed (judging whether the cleaning is completed by the turbidity of the IPA solution or setting a fixed cleaning time), turn off the motor b22 and the air pump 12, and drain the IPA solution in the splicing cylinder 8 into the box body a4 through the drain pipe for recycling; at this time, the IPA solution remaining on the product surface will volatilize and absorb the remaining heat of the product (the IPA solution has the characteristic of rapid volatilization), so as to realize the simultaneous cleaning and cooling of the product, improve the product processing efficiency, and at the same time avoid the phenomenon of stress cracks caused by large temperature difference of the product.

[0042] After the IPA solution is completely volatilized, turn on the pump body 10 and the solenoid valve b28, and use the pump body 10 to cooperate with the pipe c26 to transport the clean water in the clean water area 1302 to the splicing cylinder 8 until the clean water submerges the product. The product surface can be polished with waterproof sandpaper in the water. The water can effectively absorb the heat generated by polishing, and at the same time can effectively control and avoid the dispersion of dust, and can also clean the dust generated by polishing the product surface; for some narrow spaces such as grooves on the product surface, the pipe a19 can be removed, and by extending the fluff structure on its surface into the narrow space, it can be polished to improve the polishing efficiency (the elastic fiber is woven into a twist shape, which can significantly improve the toughness. When the fluff structure extends into the narrow space, the contact force between the fluff structure and the inner wall of the space can be increased to ensure the effectiveness of the fluff structure polishing). After the polishing is completed, the drain pipe can be opened to drain the clean water into the box body a4 for recycling, and at the same time the debris and dust generated by polishing will also flow into the box body a4 for recycling. There is a drain pipe on the box body a4. When the liquid in the box body a4 accumulates to a certain extent, it can be drained through the drain pipe and the box body a4 can be cleaned.

[0043] After all the above operations are completed, remove the product, and then control the telescopic component 9 to lower the splicing cylinder 8 to reset, which is convenient for the printing table 18 to move to the printing device 3 for printing operations.

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

Claims

1. A precision forming device for light-curing 3D printing in the production of customized products, comprising a bottom plate (1), a vertical plate (2) is provided on the bottom plate (1), and a printing device (3) body is provided on the vertical plate (2); characterized in that, It further includes: A conversion mechanism, which includes a box body a (4), a rotating cylinder (5), a support plate (14), casters (15), a base (6) and a motor a (16); the base (6) is arranged on the bottom plate (1); the rotating cylinder (5) is rotatably arranged on the outer peripheral surface of the base (6), and multiple support plates (14) are provided and connected to the rotating cylinder (5); the box body is arranged at the top of the rotating cylinder (5); the casters (15) are arranged at the bottom end of the support plate (14); the motor a (16) is arranged on the base (6) and its output end is connected to the box body; A cooling mechanism, which includes a telescopic component (9), an air pump (12), a pump body (10), a printing table (18), a turntable (24), a splicing cylinder (8), a plate a (7), a pipe a (19), a pipeline assembly and a box body b (13); multiple printing tables (18) are provided and connected to the box body a (4); the splicing cylinder (8) is sleeved outside the printing table (18); the telescopic component (9) is arranged on the support plate (14) and connected to the splicing cylinder (8); the plate a (7) is arranged on the printing table (18); a notch adapted to the plate a (7) is formed on the splicing cylinder (8); a disc (17) is rotatably arranged on the printing table (18); a circular opening is formed on the disc (17); the turntable (24) is rotatably arranged in the splicing cylinder (8), and the pipe a (19) passes through the circular opening and is detachably connected to the turntable (24); the box body b (13) is arranged on the support plate (14); the pump body (10) is communicated with the turntable (24) through the pipeline assembly; the air pump (12) is communicated with the pipeline assembly.

2. The precision forming device for light-curing 3D printing in the production of customized products according to claim 1, characterized in that, A drain pipe is arranged on the plate a (7) for draining the liquid in the splicing cylinder (8) into the box body a (4).

3. A light-curing 3D printing precision forming device for custom product production according to claim 1, characterized in that, Multiple spray holes are formed on the surface of the pipe a (19); multiple fluff structures are arranged on the surface of the pipe a (19) for polishing the product.

4. A light-curing 3D printing precision forming device for custom product production according to claim 3, characterized in that, The fluff structure is composed of elastic fibers and waterproof sandpaper; multiple elastic fibers are woven into a twist shape; the waterproof sandpaper is wrapped on the surface of the elastic fibers.

5. The precision forming device for light-curing 3D printing in the production of customized products according to claim 1, characterized in that, A partition is arranged inside the box body b (13); the partition divides the inside of the box body b (13) into a solvent area (1301) and a clean water area (1302).

6. The light-curing 3D printing precision forming equipment for customized product production according to claim 5, characterized in that, The turntable (24) is in a hollow shape; an annular plate (20) is rotatably arranged at the bottom end of the turntable (24).

7. A light-curing 3D printing precision forming device for custom product production according to claim 6, characterized in that, The pipeline assembly includes a three-way pipe (21), a telescopic hose (11), a pipe b (25) and a pipe c (26); the water outlet end of the pump body (10) is communicated with the telescopic hose (11); the air pump (12) is communicated with the telescopic hose (11); the telescopic hose (11) is communicated with the three-way pipe (21); the three-way pipe (21) is communicated with the annular plate (20); the water inlet end of the pump body (10) is communicated with the pipe b (25); the pipe b (25) is communicated with the water tank and extends into the solvent area (1301); an electromagnetic valve a (27) is arranged on the part of the pipe b (25) located in the solvent area (1301); the pipe c (26) is communicated with the pipe b (25) and extends into the clean water area (1302); an electromagnetic valve b (28) is arranged on the pipe c (26).

8. A light-curing 3D printing precision forming device for custom product production according to claim 1, characterized in that, At the bottom of the splicing cylinder (8), there is a motor b (22), and the output end of the motor b (22) is connected to the turntable (24); a cylinder (23) is provided at the center of the turntable (24), and the cylinder (23) is connected to the inner top and bottom ends of the turntable (24).

Images