CN117048046A - 3D printing warp-preventing structure and method - Google Patents
3D printing warp-preventing structure and method Download PDFInfo
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- CN117048046A CN117048046A CN202310978672.9A CN202310978672A CN117048046A CN 117048046 A CN117048046 A CN 117048046A CN 202310978672 A CN202310978672 A CN 202310978672A CN 117048046 A CN117048046 A CN 117048046A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010146 3D printing Methods 0.000 title claims abstract description 42
- 239000010410 layer Substances 0.000 claims abstract description 140
- 239000000463 material Substances 0.000 claims abstract description 107
- 238000007639 printing Methods 0.000 claims abstract description 97
- 239000012790 adhesive layer Substances 0.000 claims abstract description 66
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 24
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 24
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 13
- 229920002530 polyetherether ketone Polymers 0.000 claims description 13
- 229920005669 high impact polystyrene Polymers 0.000 claims description 12
- 239000004797 high-impact polystyrene Substances 0.000 claims description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 9
- 238000009725 powder blending Methods 0.000 claims description 8
- 239000002356 single layer Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 229920002292 Nylon 6 Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 229920006289 polycarbonate film Polymers 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 16
- 235000017491 Bambusa tulda Nutrition 0.000 description 16
- 241001330002 Bambuseae Species 0.000 description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 16
- 239000011425 bamboo Substances 0.000 description 16
- 230000003405 preventing effect Effects 0.000 description 14
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 8
- 229920000747 poly(lactic acid) Polymers 0.000 description 6
- 239000004626 polylactic acid Substances 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229920006520 PA12-CF Polymers 0.000 description 2
- 229920006486 PEEK-GF Polymers 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/40—Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Abstract
The application provides a 3D printing warp-preventing structure and a method, wherein the structure is used for connecting a bottom plate and a model and comprises the following steps: the net-shaped structure layer is arranged on the bottom plate, and the material of the net-shaped structure layer is the same as that of the model; the first auxiliary bonding layer is arranged between the mesh structure layer and the model and is used for bonding the mesh structure layer and the model, and the bonding force of the first auxiliary bonding layer and the model is smaller than that of the mesh structure layer and the model. The method comprises the following steps: printing a mesh structure layer on the base plate by using a model material; printing a first auxiliary adhesive layer on the mesh structure layer; printing the model on the first auxiliary adhesive layer. According to the application, the reticular structure layer and the first auxiliary adhesive layer are arranged between the bottom plate and the model, and the reticular structure layer and the auxiliary adhesive layer are printed before the model is printed, so that the warpage of the bottom of the model in the 3D printing process can be effectively restrained.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a 3D printing warp-preventing structure and method.
Background
3D printing is a rapid prototyping method for constructing three-dimensional objects by printing layer by layer, and has been rapidly developed in recent years. One defect that often occurs during 3D printing is warpage of the bottom surface of the model. This is mainly due to non-uniformity of shrinkage and residual stress of the mold during printing. The warpage of the bottom surface affects the print dimensional accuracy of the entire model, and the surface quality may even directly lead to print failure. Therefore, bottom warpage is a class of problems that need to be resolved urgently in 3D printing.
Disclosure of Invention
The 3D printing warp-preventing structure and the method provided by the application can effectively inhibit the problem of warp of the bottom of the model in the 3D printing process.
The technical scheme provided by the application is as follows:
in a first aspect, the application discloses a 3D printing warp-preventing structure for connecting a base plate and a model, comprising:
the net-shaped structure layer is arranged on the bottom plate, and the material of the net-shaped structure layer is the same as that of the model;
the first auxiliary bonding layer is arranged between the mesh structure layer and the model and is used for bonding the mesh structure layer and the model, and the bonding force of the first auxiliary bonding layer and the model is smaller than that of the mesh structure layer and the model.
In some embodiments, the first auxiliary adhesive layer is a single layer structure.
In some embodiments, further comprising: the second auxiliary bonding layer is arranged between the reticular structure layer and the bottom plate and is used for bonding the bottom plate and the reticular structure layer, and the material of the second auxiliary bonding layer is the same as that of the first auxiliary bonding layer.
In some embodiments, the printing temperature of the mesh layer is greater than the printing temperature of the first auxiliary adhesive layer.
In some embodiments, the material of the mesh layer is a polycarbonate-acrylonitrile-butadiene-styrene copolymer and the material of the first auxiliary adhesive layer is high impact polystyrene; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer is nylon 6-carbon fiber, the material of the first auxiliary bonding layer is a first auxiliary material, and the first auxiliary material is a polyvinyl alcohol, polyethylene and talcum powder blending material; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer is polyether-ether-ketone, the material of the first auxiliary bonding layer is a second auxiliary material, and the second auxiliary material is an acrylonitrile-butadiene-styrene copolymer, nylon 6 and talcum powder blending material.
In some embodiments, the substrate is a polycarbonate film substrate.
According to a second aspect of the present application, the present application discloses a 3D printing warp preventing method, comprising the steps of:
printing a mesh structure layer on the base plate by using a model material;
printing a first auxiliary adhesive layer on the mesh structure layer, wherein the adhesive force between the first auxiliary adhesive layer and the model is smaller than that between the mesh structure layer and the model;
printing the model on the first auxiliary adhesive layer.
According to the embodiment, the mesh structure layer and the first auxiliary adhesive layer are arranged between the bottom plate and the model, and the mesh structure layer and the auxiliary adhesive layer are printed before the model is printed, so that warping of the bottom of the model in the 3D printing process can be effectively restrained.
In some embodiments, prior to printing the mesh layer on the base plate using the modeling material, comprising:
and printing a second auxiliary adhesive layer on the bottom plate, so that the reticular structure layer is printed on the second auxiliary adhesive layer, and the material of the second auxiliary adhesive layer is the same as that of the first auxiliary adhesive layer.
The second auxiliary bonding layer is printed between the bottom plate and the net-shaped structure layer and is used for bonding the bottom plate and the net-shaped structure layer, so that the problem that some net-shaped structure layers are not well bonded with the bottom plate is solved.
In some embodiments, prior to printing, comprising:
setting the temperature of the bottom plate, wherein the temperature ranges from 45 degrees to 130 degrees.
In the embodiment, the temperature of the bottom plate is set, so that the bottom plate and most 3D printing model materials (such as ABS and PC-ABS, PLA, PA, PEEK, HIPS, PVA) form strong adhesion.
In some embodiments, setting printing parameters includes web layer printing temperature, first auxiliary adhesive layer printing temperature, printing speed, layer height, line width, platen temperature, and chamber temperature.
The printing parameters are set, so that printing of the mesh structure layer, the first auxiliary adhesive layer and the model is facilitated.
Compared with the prior art, the application has at least the following beneficial effects:
1. the mesh structure layer is printed by using the model material, so that the problem of warping of the bottom of the model in the 3D printing process can be effectively restrained;
2. the auxiliary adhesive layer is printed above the mesh structure layer, the adhesive force between the auxiliary adhesive layer and the model is smaller than that between the mesh structure layer and the model, so that the adhesive property between the upper surface of the mesh structure layer and the bottom surface of the model is adjusted, the model can be easily peeled off from the mesh structure layer after printing is finished, the model and the bottom surface are not damaged, and the bottom surface of the model can keep higher smoothness after printing is finished;
3. the anti-warping structure is the same as the operation of the printing model, no additional operation is needed, and the operation is simple and no additional requirement is needed for printing equipment;
4. the buckling-preventing structure is formed by the reticular structure layer and the auxiliary bonding layer, so that better structural rigidity and functionality can be maintained at higher cavity temperature.
Drawings
The above features, technical features, advantages and implementation modes of the present application will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and understandable manner.
FIG. 1 is a schematic diagram of an embodiment of a 3D printing warp-preventing structure provided by the application;
FIG. 2 is a schematic structural view of another embodiment of a 3D printing warp-preventing structure provided by the present application;
FIG. 3 is a schematic flow chart of an embodiment of a method for preventing warpage in 3D printing;
fig. 4 is a schematic flow chart of another embodiment of a 3D printing warp preventing method provided by the present application.
Reference numerals:
a base plate 1, a net-shaped structural layer 2, a first auxiliary adhesive layer 3, a model 4 and a second auxiliary adhesive layer 5.
Detailed Description
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will explain the specific embodiments of the present application with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the application, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present application are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
Currently, the main methods for preventing the warpage of the mold are as follows:
(1) By modifying the model itself, such as modifying the model bottom shape;
(2) By adjusting process parameters, including printing temperature, chamber temperature, bottom plate temperature, printing speed, filling ratio, line width, layer height, etc.;
(3) The adhesion between the bottom surface of the model and the bottom plate is increased by gluing;
(4) And printing a bamboo raft structure on the bottom plate.
In the general case of a device such as a mobile phone,
(1) The model modifying process is very complicated and can change the shape of the model;
(2) The adjustment of the process parameters is helpful to inhibit the model warpage, but has limited bottom warpage prevention effect when printing engineering materials with higher shrinkage (such as PC-ABS), and the adjustment of the process parameters can also cause the change of appearance quality and mechanical properties of the printed part;
(3) Gluing on a base plate is a relatively common method, but when gluing on engineering materials (such as PC-ABS) with severe warpage on the base plate, the warpage preventing effect is limited. And cleaning is needed after each printing is finished, so that the working procedures are increased;
(4) Printing the bamboo raft structure is also a relatively common method for preventing warping.
The principle of the warping prevention of the bamboo raft structure comprises the following points:
firstly, the net structures of the layers can alleviate slight unevenness on the bottom plate and provide a relatively flat surface, which can increase the contact stability between the upper surface of the bamboo raft structure and the bottom surface of the model;
secondly, the material for printing the bamboo raft structure has better bonding performance with the model, and the bonding performance with the bottom surface of the model is further improved;
thirdly, the bamboo raft is a flat large-area structure as a whole, which increases the contact area between the structure and the bottom plate and thus improves the adhesion between the structure and the bottom plate. The bamboo raft structure can simultaneously increase the adhesiveness with the bottom plate and the bottom surface of the model, and plays a role in reinforcing and connecting the bamboo raft structure. Therefore, when the model warps, the bamboo raft structure can be well adhered to the bottom plate and pull the bottom surface of the model, so that the warp of the bottom surface of the model is restrained, but the model is difficult to clean, and the bottom surface of the model is damaged after the model is cleaned.
In the actual printing process, when some engineering materials with serious warp deformation are printed, warp of the bottom surface of the model cannot be well restrained only by adjusting printing process parameters or gluing, and the problem that the bamboo raft structure is not well stripped when the model materials are used for printing is solved. Therefore, the application provides the 3D printing warp-preventing structure and the 3D printing warp-preventing method, which can effectively inhibit the warp problem of the bottom of the model in the 3D printing process and solve the problem of difficult detachment.
For ease of understanding, the terms involved in embodiments of the application are presented herein:
PC-ABS: polycarbonate-acrylonitrile-butadiene-styrene copolymer, PC: polycarbonate, ABS: acrylonitrile-butadiene-styrene copolymer, PLA: polylactic acid, PA6-CF: nylon 6-carbon fiber, PA: polyamide/nylon, PA12-CF: nylon 12-carbon fiber, PEEK: polyetheretherketone, PEEK-GF: polyetheretherketone-glass fiber, HIPS: high impact polystyrene, PVA: polyvinyl alcohol.
In one embodiment, referring to fig. 1 of the drawings, the present application provides a 3D printing warp preventing structure for connecting a base plate 1 and a mold 4, which includes: a mesh layer 2 and a first auxiliary adhesive layer 3.
And the net-shaped structural layer 2 is arranged on the bottom plate 1 and used for bonding the bottom plate 1 and the first auxiliary bonding layer 3, and the material of the net-shaped structural layer 2 is the same as that of the model 4.
Specifically, a group of stripes with preset intervals are printed on the bottom plate 1, then a new round of stripes are printed on the stripes in the printing direction, an included angle is formed between each new round of stripes and the previous stripe, and the printing is repeated for a plurality of times to obtain a structure similar to a bamboo raft, so that the net-shaped structure layer 2 is formed, and meanwhile, the model material is used as the material of the net-shaped structure layer 2, so that the bonding strength between the bottom plate 1 and the model 4 can be enhanced.
The first auxiliary adhesive layer 3 is arranged between the mesh structure layer 2 and the model 4 and is used for bonding the mesh structure layer 2 and the model 4, and the bonding force of the first auxiliary adhesive layer 3 and the model 4 is smaller than that of the mesh structure layer 2 and the model 4.
Specifically, the first auxiliary adhesive layer 3 is printed on the mesh layer 2 by using an auxiliary material, and is used for bonding the mesh layer 2 and the model 4, and the bonding force of the first auxiliary adhesive layer 3 and the model 4 is smaller than that of the mesh layer 2 and the model 4, so that the bonding property between the upper surface of the mesh layer 2 and the bottom surface of the model 4 can be adjusted, and the model 4 can be easily peeled from the mesh layer 2 after printing is completed.
In this embodiment, after the mesh structure layer 2 is printed by using the model material, an auxiliary adhesive layer is printed above the mesh structure layer 2, so that the warpage problem of the bottom of the model in the 3D printing process can be effectively inhibited, and the model 4 can be easily peeled off after being printed, so that damage to the printed model 4 and the bottom surface is avoided, and higher smoothness is maintained.
In one embodiment the first auxiliary adhesive layer 3 is a single layer structure resembling a bamboo raft, in fact a single layer auxiliary adhesive layer consisting of dense lines.
Specifically, when the first auxiliary adhesive layer 3 is printed, the first auxiliary adhesive layer 3 is printed as in the case of the mesh-like structure layer 2, and is formed in a bamboo raft-like structure.
According to the embodiment, the first auxiliary adhesive layer 3 is printed into a structure similar to a bamboo raft, so that the adhesive degree of the mesh structure layer 2 and the model 4 is improved, the warping problem of the bottom of the model in the 3D printing process can be effectively restrained, and meanwhile, the effect that the model 4 can be easily peeled after being printed is not influenced.
In one embodiment, the first auxiliary adhesive layer 3 is of a single-layer structure.
In particular, since the processing temperature of the auxiliary material is generally required to be lower than that of the mold material, it is easy for thermal softening to occur during printing, and in order to limit the softening deformation of the printed portion of the auxiliary material as much as possible, the first auxiliary adhesive layer 3 is printed only in a single layer.
In this embodiment, when the first auxiliary adhesive layer 3 is printed, only one layer is printed, which solves the problem that the structure printed by the auxiliary material is easy to lose the original structural rigidity due to softening by heating, and reduces the adhesion degree, so that the bottom surface of the model 4 is not pulled.
In one embodiment, the printing temperature of the mesh layer 2 is greater than the printing temperature of the auxiliary adhesive layer.
In particular, the thermal processing temperature of the auxiliary material generally does not exceed the thermal processing temperature of the model material, and if exceeded, can damage the printed model material during printing.
The present embodiment prevents damage to the printed model material during printing by setting the printing temperature of the mesh-like structure layer 2 and the printing temperature of the auxiliary adhesive layer.
In one embodiment, the material of the mesh-like structure layer 2 is polycarbonate-acrylonitrile-butadiene-styrene copolymer, and the material of the first auxiliary adhesive layer 3 is high impact polystyrene; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer 2 is nylon 6-carbon fiber, the material of the first auxiliary bonding layer 3 is a first auxiliary material, and the first auxiliary material is a polyvinyl alcohol, polyethylene and talcum powder blending material; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer 2 is polyether-ether-ketone, the material of the first auxiliary bonding layer 3 is a second auxiliary material, and the second auxiliary material is an acrylonitrile-butadiene-styrene copolymer, nylon 6 and talcum powder blending material.
In this embodiment, when the mold material is some material, the auxiliary material is selected correspondingly, and the warp-preventing structure formed by the two materials can keep better structural rigidity and functionality at higher cavity temperature, so that the bottom surface of the mold 4 can be pulled to prevent the bottom surface from being warped, and the mold 4 can be easily peeled off after printing is finished, and the bottom surface of the mold 4 is not damaged.
In one embodiment, the substrate 1 is a polycarbonate film substrate 1.
In one embodiment, referring to fig. 2 of the drawings, the 3D printing warp preventing structure provided by the present application further includes: a second auxiliary adhesive layer 5.
The second auxiliary adhesive layer 5 is disposed between the mesh-like structure layer 2 and the base plate 1, and is used for bonding the base plate 1 and the mesh-like structure layer 2, and the material of the second auxiliary adhesive layer 5 is the same as that of the first auxiliary adhesive layer 3.
Specifically, a few of the mold materials and the bottom plate 1 may have poor adhesion, at this time, the second auxiliary adhesive layer 5 may be printed on the bottom plate 1, then the mesh structure layer 2 is printed on the second auxiliary adhesive layer 5 by using the mold materials, and finally the auxiliary adhesive layer is printed on the mesh structure layer 2 by using the auxiliary materials again.
In this embodiment, the second auxiliary adhesive layer 5 is provided between the mesh layer 2 and the base plate 1, so that the problem of low adhesion between the mesh layer 2 and the base plate 1, which is made of a small number of mold materials, is solved.
In one embodiment, the second auxiliary adhesive layer 5 is of a single-layer structure.
In one embodiment the second auxiliary adhesive layer 5 is a bamboo raft like structure, in fact a single layer of dense lines.
In one embodiment, referring to fig. 3 of the drawings in the specification, the method for preventing warpage in 3D printing provided by the application includes the steps of:
s110, printing a net structure layer on a bottom plate by using a model material;
specifically, a group of stripes with preset intervals are printed on the bottom plate 1, then a new round of stripes are printed on the stripes in the printing direction, an included angle is formed between each new round of stripes and the previous stripe, and the printing is repeated for a plurality of times to obtain a structure similar to a bamboo raft, so that the net-shaped structure layer 2 is formed, and meanwhile, the model material is used as the material of the net-shaped structure layer 2, so that the bonding strength between the bottom plate 1 and the model 4 can be enhanced.
S120, printing a first auxiliary adhesive layer on the reticular structure layer, wherein the adhesive force between the first auxiliary adhesive layer and the model is smaller than that between the reticular structure layer and the model;
specifically, use auxiliary material to print first supplementary adhesive linkage on the network structure layer for bonding network structure layer and model, and the adhesive force of first supplementary adhesive linkage and model is less than the adhesive force of network structure layer and model, thereby can adjust the cohesiveness between network structure layer upper surface and the model bottom surface, make the model can follow the network structure layer light and peel off after printing.
And S130, printing a model on the first auxiliary adhesive layer.
According to the embodiment, after the mesh structure layer is printed by using the model material, an auxiliary adhesive layer is printed above the mesh structure layer, so that the warping problem of the bottom of the model in the 3D printing process can be effectively restrained, the model can be easily stripped after the model is printed, the damage to the printing model and the bottom surface is avoided, and the higher smoothness is maintained.
In one embodiment, referring to fig. 4 of the drawings, the method for preventing warpage in 3D printing provided by the present application includes, based on the above embodiment, before step S110:
s210, printing a second auxiliary adhesive layer on the bottom plate.
Specifically, a few of the model materials and the bottom plate can be adhered poorly, at this time, the second auxiliary adhesive layer can be printed on the bottom plate, the mesh structure layer is printed on the second auxiliary adhesive layer by using the model materials, and finally the auxiliary adhesive layer is printed on the mesh structure layer by using the auxiliary materials again.
In this embodiment, the second auxiliary adhesive layer is disposed between the mesh structure layer and the base plate, so as to solve the problem that the adhesion between the mesh structure layer made of a small number of model materials and the base plate is low.
In one embodiment, the method for preventing warpage in 3D printing provided by the present application further includes, before printing, on the basis of the above embodiment:
s310, setting the temperature of the bottom plate, wherein the temperature ranges from 45 degrees to 130 degrees;
the embodiment can ensure that the bottom plate and most 3D printing model materials, such as ABS and PC-ABS, PLA, PA, PEEK, HIPS, PVA, form stronger bonding by adjusting the temperature of the bottom plate within the range of 45-130 ℃.
In one embodiment, the method for preventing warpage in 3D printing provided by the present application, when the material of the mesh structure layer is polycarbonate-acrylonitrile-butadiene-styrene copolymer, and the material of the first auxiliary adhesive layer is high impact polystyrene, comprises the steps of:
placing a square model with the thickness of 60mmX, 60mmX and 60mm in 'INTAMSUITE4.1.1' slicing software, adjusting the printing position, and selecting a spray head 1 (PC-ABS) for printing, wherein the spray head 1 uses model material PC-ABS;
in the printing process parameter list 'printing platform attachment' option, the printing platform attachment type is selected as follows: "raft", and selecting the head 1 for printing;
selecting a sprayer 2 (HIPS) for printing in 'Raft Skin Extruder', wherein the sprayer 2 uses an auxiliary material HIPS;
adjusting other process parameters, and printing temperature of PC-ABS: 270 ℃; HIPS printing temperature: 250 ℃; printing speed: 60mm/s; layer height: 0.2mm; linewidth: 0.4mm; platform temperature: 95 ℃; chamber temperature: 95 ℃;
the printing model is started.
In one embodiment, the 3D printing warp preventing method provided by the application, when the material of the mesh structure layer is nylon 6-carbon fiber, the material of the first auxiliary bonding layer is a first auxiliary material, and the first auxiliary material is a polyvinyl alcohol, polyethylene and talcum powder blending material, comprises the following steps:
a60 mmX60mmX60mm square model was placed in the "INTAMSISITE 4.1.1" slicing software. The post-print position is adjusted and printing is selectively performed using the head 1 (PA 6-CF), and the head 1 uses the modeling material PA6-CF.
In the printing process parameter list 'printing platform attachment' option, the printing platform attachment type is selected as follows: "raft".
In "Raft Base Extruder", a head 2 (SP 3030) was selected for printing, the head 2 uses a first auxiliary material SP3030, and SP3030 is a polyvinyl alcohol, polyethylene, talc blend material.
The head 1 is selected for printing in "Raft Middle Extruder" and "Raft Top Extruder".
The head 2 is selected for printing in "Raft Skin Extruder".
Adjusting other process parameters, and printing the PA6-CF temperature: 260 ℃; SP3030 print temperature: 210 ℃; printing speed: 60mm/s; layer height: 0.2mm; linewidth: 0.4mm; platform temperature: 65 ℃; chamber temperature: 60 ℃.
The printing model is started.
In one embodiment, the 3D printing warp preventing method provided by the application, when the material of the mesh structure layer is polyetheretherketone, the material of the first auxiliary bonding layer is a second auxiliary material, and the second auxiliary material is an acrylonitrile-butadiene-styrene copolymer, nylon 6 and talcum powder blending material, comprises the following steps:
a60 mmX60mmX60mm square model was placed in the "INTAMSISITE 4.1.1" slicing software. The post-print position was adjusted and printing was selectively performed using a head 1 (PEEK), and the head 1 used a modeling material PEEK.
In the printing process parameter list 'printing platform attachment' option, the printing platform attachment type is selected as follows: "raft",
in "Raft Base Extruder", a jet head 2 (SP 5000) was selected for printing, and the jet head 2 uses a second auxiliary material SP5000, and SP5000 is an acrylonitrile-butadiene-styrene copolymer, nylon 6, talc powder blend material.
Spray head 1 (PEEK) was selected for printing in "Raft Middle Extruder" and "Raft Top Extruder".
The head 2 (SP 5000) is selected for printing in "Raft Skin Extruder".
Adjusting other process parameters, PEEK printing temperature: 440 ℃; SP5000 printing temperature: 300 ℃; printing speed: 60mm/s; layer height: 0.2mm; linewidth: 0.4mm; platform temperature: 130 ℃; chamber temperature: 100 ℃.
The printing model is started.
In one embodiment, the model material may be any of PC-ABS, PC, ABS, PLA, PA6-CF, PA12-CF, PEEK, PEEK-GF.
In one embodiment, the auxiliary material may be any one of HIPS, PVA, PA, PLA, SP3030, SP 5000.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. A warpage structure is prevented in 3D printing for connect bottom plate and model, its characterized in that includes:
the net-shaped structure layer is arranged on the bottom plate, and the material of the net-shaped structure layer is the same as that of the model;
the first auxiliary bonding layer is arranged between the mesh structure layer and the model and is used for bonding the mesh structure layer and the model, and the bonding force of the first auxiliary bonding layer and the model is smaller than that of the mesh structure layer and the model.
2. The 3D printing warp-preventing structure according to claim 1, wherein the first auxiliary adhesive layer is a single-layer structure.
3. The 3D printing warp-resistant structure of claim 1, further comprising: the second auxiliary bonding layer is arranged between the reticular structure layer and the bottom plate and is used for bonding the bottom plate and the reticular structure layer, and the material of the second auxiliary bonding layer is the same as that of the first auxiliary bonding layer.
4. The 3D printing warp-preventing structure according to claim 1, wherein the printing temperature of the mesh-like structure layer is higher than the printing temperature of the first auxiliary adhesive layer.
5. The 3D printing warp-resistant structure of claim 1, wherein the mesh layer is made of polycarbonate-acrylonitrile-butadiene-styrene copolymer, and the first auxiliary adhesive layer is made of high impact polystyrene; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer is nylon 6-carbon fiber, the material of the first auxiliary bonding layer is a first auxiliary material, and the first auxiliary material is a polyvinyl alcohol, polyethylene and talcum powder blending material; or alternatively, the first and second heat exchangers may be,
the material of the reticular structure layer is polyether-ether-ketone, the material of the first auxiliary bonding layer is a second auxiliary material, and the second auxiliary material is an acrylonitrile-butadiene-styrene copolymer, nylon 6 and talcum powder blending material.
6. The 3D printing warp-preventing structure according to claim 1, wherein the base plate is a polycarbonate film base plate.
7. The 3D printing warp prevention method is characterized by comprising the following steps of:
printing a mesh structure layer on the base plate by using a model material;
printing a first auxiliary adhesive layer on the mesh structure layer, wherein the adhesive force between the first auxiliary adhesive layer and the model is smaller than that between the mesh structure layer and the model;
printing the model on the first auxiliary adhesive layer.
8. The method of claim 7, wherein before printing the mesh layer on the base plate using the modeling material, the method comprises:
and printing a second auxiliary bonding layer on the bottom plate, so that the reticular structure layer is printed on the second auxiliary bonding layer, and the material of the second auxiliary bonding layer is the same as that of the first auxiliary bonding layer.
9. The method of claim 7 or 8, further comprising, prior to printing:
setting the temperature of the bottom plate, wherein the temperature ranges from 45 degrees to 130 degrees.
10. The method of claim 7, further comprising setting printing parameters including the web layer printing temperature, the first auxiliary adhesive layer printing temperature, printing speed, layer height, line width, plateau temperature, and chamber temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310978672.9A CN117048046A (en) | 2023-08-04 | 2023-08-04 | 3D printing warp-preventing structure and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310978672.9A CN117048046A (en) | 2023-08-04 | 2023-08-04 | 3D printing warp-preventing structure and method |
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| CN117048046A true CN117048046A (en) | 2023-11-14 |
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| CN202310978672.9A Pending CN117048046A (en) | 2023-08-04 | 2023-08-04 | 3D printing warp-preventing structure and method |
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| Country | Link |
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- 2023-08-04 CN CN202310978672.9A patent/CN117048046A/en active Pending
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