CN113977948A - 3D printing method, printer, system and storage medium - Google Patents
3D printing method, printer, system and storage medium Download PDFInfo
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- CN113977948A CN113977948A CN202010728776.0A CN202010728776A CN113977948A CN 113977948 A CN113977948 A CN 113977948A CN 202010728776 A CN202010728776 A CN 202010728776A CN 113977948 A CN113977948 A CN 113977948A
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- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000010146 3D printing Methods 0.000 title claims abstract description 52
- 238000003860 storage Methods 0.000 title claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 78
- 239000011230 binding agent Substances 0.000 claims abstract description 76
- 239000003054 catalyst Substances 0.000 claims abstract description 68
- 238000005507 spraying Methods 0.000 claims abstract description 52
- 239000000853 adhesive Substances 0.000 claims abstract description 39
- 230000001070 adhesive effect Effects 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000003892 spreading Methods 0.000 claims abstract description 5
- 238000004590 computer program Methods 0.000 claims description 14
- 239000011812 mixed powder Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 9
- 239000004576 sand Substances 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- 239000011344 liquid material Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 235000013350 formula milk Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a 3D printing method, a printer, a system and a storage medium. The printer, the system and the storage medium are all executed by adopting a 3D printing method. The 3D printing method comprises the following steps: loading the information of the current printing layer, spreading powder and spraying a binder; judging whether the consumption of the binder in unit volume sprayed by the current layer exceeds a preset spraying range value or not; when the spraying range is exceeded, adjusting the spraying quantity parameter of the adhesive; when the consumption ratio of the catalyst and the binder in the unit volume of the current layer does not exceed the preset ratio value range, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the preset ratio value range; adjusting the addition quantity parameter of the catalyst according to the comparison result of the consumption ratio of the current layer and the range of a preset ratio value; and printing the next image layer according to the steps. The 3D printing method, the printer, the system and the storage medium can improve printing efficiency and printing quality.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printing method, a printer, a system and a storage medium.
Background
3D ink-jet printing is an important development direction in the field of additive manufacturing (3D printing), replaces the traditional production process of manual molding and modeling, and promotes the rapid development of the foundry industry by taking advantages of simplicity, high efficiency and low cost as main advantages. Powder formula 3D ink-jet printing adopts three-dimensional printing technique to utilize the shower nozzle to spray the binder to carry out bonding shaping to the powder granule, and process flow includes: constructing a data model of the sand mold, carrying out layering processing on the three-dimensional model, and converting the model data into a printing file format for output; then transmitting the printing file to a forming device of powder bonding three-dimensional printing (3DP), and printing and bonding the required shape profile layer by layer in a binder spraying mode; and finally, taking the printed product component out of the forming container, removing loose powder attached to the surface, and carrying out subsequent process treatment to obtain the required model component. The printing process is influenced by external negative pressure or the service life of the nozzle, and the spraying amount of the binder of the nozzle is changed, so that the liquid material of the sand mold is not uniformly distributed and the quality requirement of the sand mold process cannot be met, therefore, how to solve the problem of non-uniform liquid material supply in the printing process so as to improve the quality of the sand mold becomes a problem which is urgently needed to be solved at present.
Disclosure of Invention
In view of the above, it is desirable to provide a 3D printing method, a printer, a system, and a storage medium capable of improving printing efficiency and printing quality in order to solve the problem of uneven liquid supply during printing.
A 3D printing method comprising the steps of: loading the information of the current printing layer, spreading powder and spraying a binder; judging whether the consumption of the binder in unit volume sprayed by the current layer exceeds a preset spraying range value or not; when the spraying range is exceeded, adjusting the spraying quantity parameter of the adhesive; when the consumption ratio of the catalyst and the binder in the unit volume of the current layer does not exceed the preset ratio value range, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the preset ratio value range; adjusting the addition quantity parameter of the catalyst according to the comparison result of the consumption ratio of the current layer and the range of a preset ratio value; and printing the next image layer according to the steps.
In one embodiment, whether the consumption amount of the adhesive in unit volume sprayed by the current layer is larger than the maximum value of the preset spraying range is judged, and if yes, the spraying amount of the adhesive is reduced.
In one embodiment, whether the consumption of the unit volume of the adhesive sprayed by the current layer is larger than the maximum value of the preset spraying range or not is judged, and if not, whether the consumption of the unit volume of the adhesive sprayed by the current layer is smaller than the minimum value of the preset spraying range or not is judged.
In one embodiment, whether the consumption amount of the adhesive in unit volume sprayed by the current layer is smaller than the minimum value of the preset spraying range is judged, and if yes, the spraying amount of the adhesive is increased.
In one embodiment, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of a preset ratio value range is judged, and if yes, the addition amount of the catalyst is reduced.
In one embodiment, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of the preset ratio range is judged, and if not, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of the preset ratio range is judged.
In one embodiment, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of a preset ratio value range is judged, and if yes, the addition amount of the catalyst is increased.
In one embodiment, the current layer adhesive consumption per unit volume is the current layer adhesive consumption/(current layer cross-sectional area layer thickness).
In one embodiment, the catalyst consumption per unit volume is the catalyst consumption per volume of the mixed powder.
In one embodiment, the catalyst and binder consumption ratio per unit volume is catalyst consumption per binder consumption per unit volume.
A3D printer adopts the 3D printing method to print.
A 3D printing system, comprising: a memory for storing a judgment machine program; a processor for implementing the steps of the 3D printing method when executing the computer program.
A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the 3D printing method.
According to the 3D printing method, the printer, the system and the storage medium, whether the consumption of the binder in unit volume sprayed by the current layer exceeds the preset spraying range value or not is judged, so that the binder spraying amount of the current layer and the additive amount of the catalyst in the printing process are effectively controlled, the liquid material supply distribution is uniform in the printing process and the process requirement is met, the sand mold quality is improved, waste products are reduced, and the process treatment efficiency is improved.
Drawings
Fig. 1 is a schematic flow chart of a 3D printing method according to an embodiment.
Fig. 2 is a flowchart illustrating a 3D printing method according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, a 3D printing method includes:
loading the information of the current printing layer, spreading powder and spraying a binder;
judging whether the consumption of the binder in unit volume sprayed by the current layer exceeds a preset spraying range value or not;
when the spraying range is exceeded, adjusting the spraying quantity parameter of the adhesive;
when the consumption ratio of the catalyst and the binder in the unit volume of the current layer does not exceed the preset ratio value range, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the preset ratio value range;
adjusting the addition quantity parameter of the catalyst according to the comparison result of the consumption ratio of the current layer and the range of a preset ratio value;
and printing the next image layer according to the steps.
In one embodiment, the 3D printer performs printing by adopting the 3D printing method.
In one embodiment, a 3D printing system includes: a memory for storing a computer program; a processor for implementing the steps of the 3D printing method when executing the computer program.
In an embodiment, a computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the 3D printing method.
According to the 3D printing method, the printer, the system and the storage medium, whether the consumption of the binder in unit volume sprayed by the current layer exceeds the preset spraying range value or not is judged, so that the binder spraying amount of the current layer and the additive amount of the catalyst in the printing process are effectively controlled, the liquid material supply distribution is uniform in the printing process and the process requirement is met, the sand mold quality is improved, waste products are reduced, and the process treatment efficiency is improved.
The 3D printing method is described below with reference to specific embodiments to further understand the inventive concept of the 3D printing method.
Referring to fig. 1, a 3D printing method includes the following steps:
s100, loading the information of the current printing layer, spreading powder and spraying a binder;
specifically, the information of the current printing layer loaded in the printing file by the 3D printer includes a printing thickness, a printing profile, an adhesive spraying amount, and the like. After the information loading is finished, a sand-laying device of the 3D printer starts to lay powder on the current layer; after the powder is spread, the printing head of the 3D printer starts to spray the binder, so that the powder in the current printing layer and the binder are subjected to chemical reaction.
S200, judging whether the consumption of the binder in unit volume sprayed by the current layer exceeds a preset spraying range value or not;
it should be understood that, when the 3D printer performs a printing operation, since the contour information of each printed layer is not completely consistent, the corresponding printing parameters are predetermined and analyzed according to the printed product condition in the printing program, wherein the spraying amount of the layer adhesive correspondingly also gives a range of the printing parameters. If printing is performed within the preset printing parameter range under the ideal printing condition in the printing operation, the quality of the printed product meets the expected standard. However, in actual printing operation, it often happens that the ejection amount of the layer adhesive is not printed within a preset printing parameter range due to the printing environment and the printer itself, and therefore the printing quality of the final product is affected. Therefore, whether the actual injection amount of the adhesive of the current layer of each layer is within the preset injection range or not needs to be judged during printing, and if the actual injection amount exceeds the printing range, the injection amount of the adhesive needs to be adjusted so as to ensure the quality of a final printed product.
In one embodiment, the current layer adhesive consumption per unit volume is the current layer adhesive consumption/(current layer cross-sectional area layer thickness). That is, what is specifically analyzed when analyzing the amount of the sprayed adhesive is the amount of the adhesive consumption sprayed per unit volume of the current layer. Therefore, the parameter comparison result can be accurately and quickly obtained, and adjustment can be conveniently and timely carried out.
S300, when the spraying range is beyond the preset spraying range, adjusting the spraying amount parameter of the adhesive;
in this step, determining whether the actual injection quantity exceeds the preset injection range includes determining whether the actual injection quantity is less than a minimum value of the preset injection range and greater than a maximum value of the preset injection range, where the two conditions both indicate that the actual injection quantity exceeds the preset injection range and that adjustment of the injection quantity is required.
In one embodiment, whether the consumption of the adhesive in unit volume sprayed by the current layer is larger than the maximum value of the preset spraying range is judged, and if yes, the spraying amount of the adhesive is reduced. That is, the case where the preset adhesive ejection amount is exceeded, which requires a corresponding decrease in the adhesive ejection amount in time, is analyzed in this step.
In one embodiment, whether the consumption of the unit volume of the adhesive sprayed by the current layer is larger than the maximum value of the preset spraying range is judged, and if not, whether the consumption of the unit volume of the adhesive sprayed by the current layer is smaller than the minimum value of the preset spraying range is judged. That is, when it is judged in the analysis that the ejection amount of the adhesive does not exceed the maximum value of the ejection range thereof, the result may be within the preset range or lower than the minimum value of the preset range.
Further, whether the consumption of the binder in unit volume sprayed by the current layer is smaller than the minimum value of the preset spraying range or not is judged, and if yes, the spraying amount of the binder is increased. Namely, whether the consumption of the binder in unit volume sprayed by the current layer is smaller than the minimum value of the preset spraying range or not is judged, if the judgment result is that the consumption is smaller than the minimum value of the preset spraying range, the fact that the consumption still exceeds the preset range value is proved, the binder spraying amount needs to be adjusted, and the spraying amount needs to be increased correspondingly. Otherwise, if the ink jet recording head is in the jetting range, the printing requirement can be met without adjustment.
S400, when the consumption ratio of the catalyst and the binder in the unit volume of the current layer does not exceed the preset ratio value range, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the preset ratio value range;
it should be noted that the binder ejected from the print head used in 3D printing is mixed with a catalyst, so that the binder can be effectively and quickly bonded with the powder in the print layer. The amount of the catalyst to be added is controlled within a suitable range according to the amount of the binder sprayed, or the chemical reaction between the binder and the powder is affected.
In one embodiment, the catalyst consumption per unit volume is equal to the catalyst consumption per volume of the mixed powder.
In one embodiment, the ratio of catalyst and binder consumption per unit volume is catalyst consumption per binder consumption per unit volume.
The catalyst consumption calculated by adopting the unit volume method is favorable for corresponding to the binder consumption of the unit volume, and the data range is small, so that the rapid calculation and analysis are convenient.
S500, adjusting the addition parameter of the catalyst according to the comparison result of the consumption ratio of the current layer and the range of a preset ratio value;
namely, after calculation according to the calculation formula in the above embodiment, the relationship between the consumption ratio of the current map layer and the preset ratio value range is analyzed and compared, and accordingly the catalyst addition amount is adjusted.
In one embodiment, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of a preset ratio value range is judged, and if yes, the addition amount of the catalyst is reduced. That is, when the printing design is performed, the consumption ratio of the catalyst and the binder per unit volume is set in advance according to the printing product information. When the printing operation is executed, whether the consumption ratio of the catalyst and the binder in the actual current layer exceeds the maximum value of the preset ratio value range or not is analyzed and judged, if yes, the addition amount of the catalyst is obtained according to a calculation formula to be exceeded, and the addition amount of the catalyst is correspondingly reduced.
In one embodiment, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of the preset ratio range is judged, and if not, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of the preset ratio range is judged. That is, when it is determined that the actual consumption ratio of the catalyst and the binder does not exceed the maximum value of the preset ratio range, it means that the consumption ratio may be within the ideal preset ratio range or less than the minimum value of the preset ratio range, and therefore, further analysis is required.
And further, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of a preset ratio value range, and if so, increasing the addition amount of the catalyst. That is, when the consumption ratio of the catalyst and the binder in the unit volume of the current map layer is smaller than the minimum value of the preset ratio range through analysis and judgment, it can be known from the formula calculation result of the above embodiment that the corresponding catalyst addition amount is low, and therefore the catalyst addition amount needs to be correspondingly increased.
And S600, printing the next layer according to the steps.
That is, after analyzing and judging the printing condition of the current layer according to the above embodiments, the injection amount of the binder and the addition amount of the catalyst are correspondingly adjusted, and when the next layer is printed, the next layer is printed according to the adjustment result to obtain the correction of the printing parameters in time, thereby improving the printing efficiency and quality, avoiding the problem of analyzing and printing the product quality after all layers are printed.
Referring to fig. 2, in an embodiment, a 3D printing method includes the following steps:
the method comprises the steps of firstly, executing printing of a current layer, loading the current printing layer, spraying a binder, and finishing sanding.
And secondly, calculating the consumption of the binder in the unit volume of the current printing layer.
Thirdly, judging whether the consumption of the Binder in the unit volume of the current printing layer is greater than the maximum Binder addition amount Binder _ Max required by the process, and if so, entering the fourth step; if not, the fifth step is carried out.
And fourthly, adjusting the printing parameters to reduce the ejection quantity of the adhesive of the spray head, continuing the lower layer printing after the adjustment, and entering the twelfth step.
Fifthly, judging whether the consumption of the Binder in the unit volume of the current printing layer is smaller than the minimum Binder addition amount Binder _ Min required by the process, if so, entering the sixth step; if not, the seventh step is carried out.
And sixthly, adjusting printing parameters to increase the ejection quantity of the adhesive of the spray head, continuing the lower-layer printing after adjustment, and entering the twelfth step.
And seventhly, calculating the consumption ratio of the catalyst to the binder in the unit volume of the current printing layer.
Eighthly, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current printing layer is larger than the maximum value Rate _ Max of the addition ratio of the catalyst and the binder required by the process, if so, entering the ninth step; if not, entering the tenth step.
And step nine, adjusting printing parameters to reduce the addition of the catalyst, continuing the lower-layer printing after adjustment, and entering the step ten.
Tenth step, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current printing layer is smaller than the minimum value Rate _ Min of the addition ratio of the catalyst and the binder required by the process, if so, entering the tenth step; if not, the twelfth step is carried out.
And step eleven, adjusting printing parameters to increase the addition of the catalyst, continuing the lower-layer printing after adjustment, and entering the step eleven.
And step ten, adding 1 to the printing layer serial number, entering the next layer for printing, and returning to the step 1 to execute printing.
In one embodiment, a 3D printer performs printing by using the 3D printing method of any one of the above embodiments.
In one embodiment, a 3D printing system includes: a memory for storing a judgment machine program; a processor for implementing the steps of the 3D printing method according to any of the above embodiments when executing the computer program.
In one embodiment, a computer-readable storage medium has a computer program stored thereon, and when executed by a processor, the computer program implements the steps of the 3D printing method according to any one of the embodiments
In one embodiment, a 3D printer performs printing by using the 3D printing method of any one of the above embodiments.
In one embodiment, a 3D printing system includes: a memory for storing a judgment machine program; a processor for implementing the steps of the 3D printing method according to any of the above embodiments when executing the computer program.
In one embodiment, a computer-readable storage medium has a computer program stored thereon, and when executed by a processor, the computer program implements the steps of the 3D printing method according to any one of the above embodiments.
According to the 3D printing method, the printer, the system and the storage medium, whether the consumption of the binder in unit volume sprayed by the current layer exceeds the preset spraying range value or not is judged, so that the binder spraying amount of the current layer and the additive amount of the catalyst in the printing process are effectively controlled, the liquid material supply distribution is uniform in the printing process and the process requirement is met, the sand mold quality is improved, waste products are reduced, and the process treatment efficiency is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A3D printing method is characterized by comprising the following steps:
loading the information of the current printing layer, spreading powder and spraying a binder;
judging whether the consumption of the binder in unit volume sprayed by the current layer exceeds a preset spraying range value or not;
when the spraying range is exceeded, adjusting the spraying quantity parameter of the adhesive;
when the consumption ratio of the catalyst and the binder in the unit volume of the current layer does not exceed the preset ratio value range, judging whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the preset ratio value range;
adjusting the addition quantity parameter of the catalyst according to the comparison result of the consumption ratio of the current layer and the range of a preset ratio value;
and printing the next image layer according to the steps.
2. The 3D printing method according to claim 1, wherein it is determined whether the consumption amount of the adhesive per unit volume ejected in the current image layer is larger than the maximum value of a preset ejection range, and if so, the ejection amount of the adhesive is decreased.
3. The 3D printing method according to claim 1, wherein whether the consumption of the unit volume of the adhesive sprayed by the current image layer is larger than the maximum value of the preset spraying range or not is judged, and if not, whether the consumption of the unit volume of the adhesive sprayed by the current image layer is smaller than the minimum value of the preset spraying range or not is judged.
4. The 3D printing method according to claim 3, wherein it is determined whether the consumption amount of the adhesive per unit volume sprayed in the current image layer is smaller than the minimum value of a preset spraying range, and if so, the spraying amount of the adhesive is increased.
5. The 3D printing method according to claim 1, wherein whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of a preset ratio value range is judged, and if yes, the addition amount of the catalyst is reduced.
6. The 3D printing method according to claim 1, wherein whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer exceeds the maximum value of a preset ratio value range is judged, and if not, whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of the preset ratio value range is judged.
7. The 3D printing method according to claim 6, wherein whether the consumption ratio of the catalyst and the binder in the unit volume of the current layer is smaller than the minimum value of a preset ratio value range is judged, and if yes, the addition amount of the catalyst is increased.
8. 3D printing method according to claim 1, characterized in that the current layer volume adhesive consumption is current layer adhesive consumption/(current layer cross-sectional area layer thickness).
9. The 3D printing method according to claim 1, wherein the catalyst consumption per unit volume is catalyst consumption per mixed powder volume.
10. The 3D printing method according to claim 9, wherein the ratio of catalyst and binder consumption per volume is catalyst consumption per binder consumption per volume.
11. A 3D printer characterized by printing with the 3D printing method according to any one of claims 1 to 10.
12. A3D printing system, comprising:
a memory for storing a judgment machine program;
a processor for implementing the steps of the 3D printing method as claimed in any one of claims 1 to 10 when executing the computer program.
13. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the 3D printing method according to any one of claims 1 to 10.
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