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CN-115503236-B - Forming platform for photo-curing 3D printing equipment and preparation method thereof

CN115503236BCN 115503236 BCN115503236 BCN 115503236BCN-115503236-B

Abstract

The invention discloses a molding platform for photo-curing 3D printing equipment and a preparation method thereof, and relates to the technical field of 3D printing. The rapid disassembly locking structure on the forming platform is detachably connected with the platform mounting structure on the 3D printing equipment, so that the rapid disassembly locking structure is detachably mounted on the platform mounting structure, the disassembly and the mounting are more convenient, and the forming surface of the platform body is subjected to surface treatment, so that the bonding force between the forming surface of the forming platform and a printing piece is improved, the occurrence of plate falling is obviously reduced, and the printing success rate is improved.

Inventors

  • WU GANGQIANG

Assignees

  • 广州黑格智造信息科技有限公司

Dates

Publication Date
20260508
Application Date
20221020

Claims (20)

  1. 1. A molding platform for a photo-curing 3D printing device, the 3D printing device comprising a platform mounting structure, the molding platform comprising: the quick-release locking structure is detachably connected with the platform mounting structure; The platform body is made of plastic materials and provided with a molding surface obtained through surface treatment, and the molding surface is used for adhering a 3D printing piece molded after exposure and solidification of printing resin; The surface treatment is spraying, and the raw materials adopted by the spraying comprise, by mass, 100 parts of photo-setting resin, 80-150 parts of diluent and 0.05-2 parts of initiator; Wherein the light-cured resin is selected from at least one of acrylic esters, allyl ethers and vinyl ethers, and the number average molecular weight of the light-cured resin is 4000-10W; The photo-curing resin comprises 70-90 parts of first resin and 10-30 parts of second resin, wherein the number average molecular weight of the first resin is 4000-20000, the number average molecular weight of the second resin is 4-10W, the first resin is at least one selected from RA3080, RA3081, RA3083, RA3091, 6071, 6175-3 and SD7508, the second resin is at least one selected from SD1000 and SWA20, the initiator is at least one selected from TPO, 819 and TPO-L, and the double bonds of the raw materials and the double bonds of the printing resin are subjected to crosslinking curing integral reaction, so that the raw materials and an initial curing layer of the 3D printing part are fused into a whole.
  2. 2. The modeling platform of claim 1, wherein the diluent is selected from any one of water and an organic solvent.
  3. 3. The modeling platform of claim 2, wherein the diluent is an organic solvent selected from at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
  4. 4. The molding platform of claim 1, further comprising 0.05-1 part of an auxiliary agent selected from at least one of CAB 551-0.01, CAB 551-0.2, CAB 381-0.1, and CAB 381-0.5.
  5. 5. The forming table of any one of claims 1 to 4, wherein the forming table has a back surface opposite the forming surface, the forming table further comprising a plurality of through holes extending through the forming surface and the back surface, the through holes having a diameter that increases progressively from the forming surface to the back surface.
  6. 6. The modeling platform of claim 5, wherein the plurality of through holes on the modeling platform are staggered.
  7. 7. The forming table of claim 1, wherein the quick release locking structure is any one of a slide locking structure, a magnetic attraction locking structure, a plug locking structure, and an elastic locking structure.
  8. 8. A method of making the modeling platform of any of claims 1-7, comprising: providing a base material of a forming platform, wherein the base material is made of plastic; Performing surface treatment on the base material to obtain a forming platform with a forming surface subjected to the surface treatment, wherein the forming surface is used for adhering a 3D printing piece formed after exposure and solidification of printing resin; the step of carrying out surface treatment on the base material comprises the steps of spraying the base material, wherein the spraying comprises 100 parts of light-cured resin, 80-150 parts of diluent and 0.05-2 parts of initiator in parts by weight, wherein the light-cured resin is selected from at least one of acrylic esters, allyl ethers and vinyl ethers, and the number average molecular weight of the light-cured resin is 4000-10W; The photo-curing resin comprises 70-90 parts of first resin and 10-30 parts of second resin, wherein the number average molecular weight of the first resin is 4000-20000, the number average molecular weight of the second resin is 4-10W, the first resin is at least one selected from RA3080, RA3081, RA3083, RA3091, 6071, 6175-3 and SD7508, the second resin is at least one selected from SD1000 and SWA20, the initiator is at least one selected from TPO, 819 and TPO-L, and the double bonds of the raw materials and the double bonds of the printing resin are subjected to crosslinking curing integral reaction, so that the raw materials and an initial curing layer of the 3D printing part are fused into a whole.
  9. 9. The preparation method according to claim 8, wherein the raw materials for spraying comprise, by mass, 100 parts of a photo-setting resin, 100-130 parts of a diluent and 0.2-0.5 part of an initiator.
  10. 10. The method according to claim 8, wherein the diluent is selected from any one of water and an organic solvent.
  11. 11. The method according to claim 10, wherein the diluent is an organic solvent selected from at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
  12. 12. The method according to claim 11, wherein the organic solvent is a mixed solvent of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate.
  13. 13. The method according to claim 8, further comprising 0.05 to 1 part of an auxiliary agent selected from at least one of CAB 551 to 0.01, CAB 551 to 0.2, CAB 381 to 0.1, and CAB 381 to 0.5.
  14. 14. The method according to claim 8, wherein the sprayed molding table is dried, and the dried dry film thickness is controlled to be 20 μm-30 μm.
  15. 15. The method according to claim 14, wherein the diluent is water, and the drying temperature is controlled to be 60-80 ℃ and the drying time is controlled to be 10-15 min.
  16. 16. The method according to claim 14, wherein the diluent is an organic solvent, and the drying temperature is controlled to be 50-60 ℃ and the drying time is controlled to be 3-5 min.
  17. 17. The method according to claim 8, wherein the substrate is at least one selected from ABS, PC, PP, POM, PA, PS, PMMA, PBT, AS, PET, PVC, PEEK, PPSU, SAN, PE, TPE, PTFE, PES, PVA.
  18. 18. The preparation method of claim 8, wherein the material of the base material is modified ABS material, and the raw materials of the modified ABS material comprise 70-80 wt% of ABS resin, 5-20 wt% of PMMA resin, 5-10 wt% of reinforcing fiber and 1-5 wt% of coupling agent.
  19. 19. The method of producing according to claim 18, wherein the reinforcing fiber is at least one selected from the group consisting of glass fiber, ceramic fiber, silica fiber and boron fiber.
  20. 20. The method of claim 18, wherein the coupling agent is selected from at least one of silane-based monomers, styrene-based monomers, and titanate-based monomers; Wherein the silane monomer is at least one selected from vinyl trimethoxy silane, vinyl triethoxy silane, 3-methacryloxypropyl trimethoxy silane, gamma-aminopropyl triethoxy silane and gamma- (methacryloxy) propyl trimethoxy silane.

Description

Forming platform for photo-curing 3D printing equipment and preparation method thereof Technical Field The invention relates to the technical field of 3D printing, in particular to a forming platform for photo-curing 3D printing equipment and a preparation method thereof. Background Common DLP printing molding platforms are typically metal molding platforms such as stainless steel, aluminum alloys, and the like. After printing, the printing platform is taken down, and after the printed piece is shoveled, the forming platform and the printer are cleaned by alcohol/isopropanol. The metal forming platform has the advantages of repeated use, waste of a certain time for cleaning, organic solvents such as alcohol/isopropanol and the like, and concentrated treatment of waste solvents. The metal forming platform has the cleaning problem, the injection forming platform is generated, the injection forming platform can be used for repeatedly trying the platform, and the injection forming platform can also be a disposable jettisonable platform, but the problem still exists in the printing process: (1) The problems of complicated installation operation exist in both the metal forming platform and the injection forming platform, such as that most of equipment adopts a knob type locking structure, the locking mode can lock the forming platform only by screwing the knob for a plurality of times, the operation is complicated, and the injection forming platform is not suitable for the knob type and other complex locking structures due to the limitation of materials; (2) The adhesion between the molding surface of the injection molding platform and the printed piece is poor, and the plate is easy to fall off in the printing process. Many injection molding materials such as ABS, PP, PC, PVA, PET and the like cannot well overcome the problem of board falling. In view of this, the present invention has been made. Disclosure of Invention The invention aims to provide a forming platform for a photo-curing 3D printing device and a preparation method thereof, which can rapidly complete positioning and locking of the forming platform, improve the working efficiency of a 3D printer, and simultaneously can also remarkably improve the bonding force between the forming surface of the 3D printing forming platform and a printing piece, remarkably reduce the occurrence of a plate dropping phenomenon and improve the printing success rate. The invention is realized in the following way: In a first aspect, the present invention provides a modeling platform for a photo-curing 3D printing apparatus, the 3D printing apparatus comprising a platform mounting structure, the modeling platform comprising: The quick-release locking structure is detachably connected with the platform mounting structure; The platform body is made of plastic materials and provided with a molding surface obtained through surface treatment, and the molding surface is used for adhering a 3D printing piece formed after exposure and solidification of a photo-curing material. In an alternative embodiment of the present invention, the surface treatment comprises at least one of spraying, sandblasting, sanding, engraving, electroplating, plating, printing, embossing, polishing, painting, oiling, ion plating, and laser treatment. In an alternative embodiment of the invention, the surface treatment is spraying, and the spraying comprises 100 parts of photo-curing resin, 80-150 parts of diluent and 0.05-2 parts of initiator in parts by weight; Wherein the photo-curing resin is selected from at least one of acrylic esters, allyl ethers and vinyl ethers, and the number average molecular weight of the photo-curing resin is 4000-10W. In an alternative embodiment, the composition comprises 100 parts by mass of a photo-curing resin, 100-130 parts by mass of a diluent and 0.2-0.5 part by mass of an initiator. In an alternative embodiment of the present invention, the photocurable resin comprises 50-90 parts of a first resin having a number average molecular weight of 4000-20000 and 10-50 parts of a second resin having a number average molecular weight of 4W-10W; the first resin is selected from at least one of RA3080, RA3081, RA3083, RA3091, 6071, 6175-3 and SD 7508; the second resin is selected from at least one of SD1000 and SWA 20. In an alternative embodiment of the present invention, the diluent is selected from any one of water and an organic solvent. In an alternative embodiment of the present invention, the diluent is an organic solvent selected from at least one of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate. In an alternative embodiment, the organic solvent is a mixed solvent of ethyl acetate, butyl acetate and propylene glycol methyl ether acetate. In an alternative embodiment of the present invention, the initiator is selected from at least one of TPO, 819 and TPO-L. In an alternative embodiment of the invention, 0.05-1 part of auxiliary agent is also