CN113085169A - 3D printing forming method of spine corrector - Google Patents
3D printing forming method of spine corrector Download PDFInfo
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- CN113085169A CN113085169A CN202110356975.8A CN202110356975A CN113085169A CN 113085169 A CN113085169 A CN 113085169A CN 202110356975 A CN202110356975 A CN 202110356975A CN 113085169 A CN113085169 A CN 113085169A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010146 3D printing Methods 0.000 title claims abstract description 29
- 238000007639 printing Methods 0.000 claims abstract description 134
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 28
- 238000001746 injection moulding Methods 0.000 abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 abstract description 10
- 239000010440 gypsum Substances 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000012937 correction Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005137 deposition process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 206010039722 scoliosis Diseases 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009662 stress testing 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
- B29C64/10—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
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- 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
- B29C64/295—Heating elements
-
- 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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
Abstract
The invention discloses a 3D printing forming method of a spinal brace, which comprises the following steps: acquiring a first printing model for 3D printing; obtaining a second printing model based on the first printing model and the printing parameters of the printing material; setting a printing program based on the second printing model; heating the printing material; printing the second printing model based on the printing program to obtain a printing product; and correcting the printed product to obtain the spinal column corrector. By adopting the method, the spine corrector meeting the mechanical property requirements of patients on products can be printed out quickly, the technical problems that the spine corrector in the prior art is manufactured by gypsum injection molding one by one, the processing efficiency of the spine corrector is low, the processing period is long are solved, and the beneficial effects of high production efficiency and low production cost are realized.
Description
Technical Field
The invention relates to the field of appliance production, in particular to a 3D printing forming method of a spine appliance.
Background
Scoliosis is a disease that is characterized by a certain segment of the spine being permanently deviated from the midline of the body, causing the spine to bulge laterally in an arc or "S" shape. Children and teenagers with scoliosis need timely treatment to correct the posture of the spine, and the spine corrector can be used for assisting in correcting the scoliosis.
At present, the spine correction devices widely used are manufactured by gypsum injection molding, the spine correction devices manufactured by the gypsum injection molding need to be manufactured according to the body types, the illness states and the real-time scanning results of each patient, and the spine correction devices belong to personalized customized products. Each spinal column corrector needs to take 1-2 weeks, the processing period is long, and the overlong production period increasingly limits the large-scale production and development of the spinal column corrector.
Therefore, the prior art has at least the following technical problems:
the spine corrector in the prior art is manufactured by adopting gypsum injection molds one by one, so that the spine corrector is low in processing efficiency and long in processing period.
Disclosure of Invention
The embodiment of the application provides a 3D printing forming method of spine correction ware, and the spine correction ware that has solved among the prior art adopts the gypsum injection mould to make one by one for the technical problem of low, the processing cycle length of spine correction ware machining efficiency.
In order to solve the above problem, an embodiment of the present application provides a 3D printing forming method of a spinal brace, the method including the following steps:
acquiring a first printing model for 3D printing;
obtaining a second printing model based on the first printing model and the printing parameters of the printing material;
setting a printing program based on the second printing model;
heating the printing material;
printing the second printing model based on the printing program to obtain a printing product;
and correcting the printed product to obtain the spinal column corrector.
Further, the acquiring the first printing model for 3D printing specifically includes:
based on the spine scan results, a spine corrector model for correcting the spine is obtained, thereby obtaining a first printing model for 3D printing.
Further, before obtaining the second printing model based on the first printing model and the printing parameters of the printing material, the method further includes: print parameters of a print material are acquired.
Further, the acquiring of the printing parameters of the printing material specifically includes:
and trial printing a spline of the printing material by using the printer, measuring the mechanical property of the spline by using mechanical testing equipment, and selecting the printing spline with the proper mechanical property so as to obtain the printing parameters of the spline printed with the proper mechanical property.
Further, the printing parameters comprise extrusion temperature, slope building angle and bridge drawing parameters.
Further, the obtaining a second printing model based on the printing parameters and the first printing model specifically includes:
and adding an auxiliary printing model on the first printing model according to the slope building angle and the bridge pulling parameter, so that the first printing model becomes a second printing model meeting the slope building angle and the bridge pulling parameter.
Further, the setting of the printing program based on the second printing model specifically includes:
and slicing the second printing model, and generating a corresponding printing program by the printer according to the slicing processing result.
Further, the heating the printing material specifically comprises:
the printer is provided with a vacuum heating bottom plate for heating printing materials, the vacuum pressure and the heating temperature of the vacuum heating bottom plate are adjusted based on the extrusion temperature of the printing materials, and the printing materials are adsorbed on the vacuum heating bottom plate for heating.
Further, the printing material is polypropylene, the vacuum pressure of the vacuum heating bottom plate is adjusted to be 0.5-0.7 atmosphere, and the heating temperature is adjusted to be 90-110 degrees.
Further, the correcting the printed product to obtain the spinal column appliance specifically comprises:
and cutting off the part generated by the auxiliary printing model on the printing product so as to obtain the spinal column corrector.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
adopt this application embodiment a 3D of backbone unscrambler prints forming method can print out the backbone unscrambler that satisfies the patient and to the mechanical properties requirement of product fast, compare in the processing technology among the prior art, print production through 3D and improved production efficiency, production cycle and manufacturing cost have been reduced, and the partial parameter of the backbone unscrambler of printing the preparation is superior to the backbone unscrambler of traditional injection molding technology preparation, it adopts the gypsum injection molding to make one by one to effectively to have solved the backbone unscrambler among the prior art and forms, make backbone unscrambler machining efficiency low, the technical problem of processing cycle length, high production efficiency has been realized, beneficial effect that manufacturing cost is low.
Drawings
Fig. 1 is a schematic flow chart of a 3D printing and forming method of a spinal brace according to an embodiment of the present disclosure;
FIG. 2 is a table of process data from a test print of a sample strip of the polypropylene in an embodiment of the present application.
Detailed Description
The embodiment of the application provides a 3D printing forming method of spine correction ware, and the spine correction ware that has solved among the prior art adopts the gypsum injection mould to make one by one for the technical problem of low, the processing cycle length of spine correction ware machining efficiency.
In order to solve the technical problems, the technical scheme provided by the application has the following general idea: print production backbone unscrambler through 3D, compare in prior art's processing technology, improved production efficiency, reduced production cycle and manufacturing cost, and the backbone unscrambler that prints the preparation can satisfy the patient and to the mechanical properties requirement of product, partial parameter is superior to traditional injection molding process even, the backbone unscrambler that has effectively solved among the prior art adopts the gypsum injection molding to make one by one and forms, make backbone unscrambler machining efficiency low, the technical problem of processing cycle length, the beneficial effect that production efficiency is high, low in production cost has been realized.
The technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
Fig. 1 is a schematic flow chart of a 3D printing and forming method of a spinal appliance according to an embodiment of the present application, where as shown in fig. 1, the method includes the following steps:
step 110: acquiring a first printing model for 3D printing;
further, the step 110 specifically includes: based on the spine scan results, a spine corrector model for correcting the spine is obtained, thereby obtaining a first printed model of the spine corrector for 3D printing.
Specifically, according to the spine scanning result and the relevant condition of the patient, the relevant personnel draw a corrector model which is matched with the spine of the patient and has a correcting effect, and based on the corrector model, the 3D printer can obtain a first printing model of the spine corrector for 3D printing.
The step 110 further comprises: print parameters of a print material are acquired.
Further, the obtaining of the printing parameters of the printing material specifically includes: and trial printing a spline of the printing material by using a 3D printer, measuring the mechanical property of the spline by using mechanical testing equipment, and selecting the printing spline with the proper mechanical property so as to obtain the printing parameters of the spline printed with the proper mechanical property.
Further, the printing parameters comprise extrusion temperature, slope building angle and bridge drawing parameters.
Specifically, in this embodiment, the selected printing material is polypropylene. In the process of trying to print the polypropylene sample strips, the process data shown in fig. 2 are obtained. As shown in fig. 2, the printing line width of 4mm is obtained, under the condition of printing layer height of 0.5mm, the maximum slope building capacity (slope building angle) of polypropylene is 50.2 degrees, the reference single-layer printing time is 12-35 seconds, sample strips are printed according to the process data, the sample strips are delivered to a stress testing laboratory, mechanical testing equipment is used, the mechanical property of the sample strips is measured, and if the requirements are met, the printing parameters are sealed and reserved.
Step 120: obtaining a second printing model based on the first printing model, the printing parameters of the printing material and the actual wall thickness;
further, the step 120 includes: and adding an auxiliary printing model on the first printing model according to the slope building angle and the bridge pulling parameter, so that the first printing model becomes a second printing model meeting the slope building angle and the bridge pulling parameter.
Specifically, for example, the original first printing model may have a relatively thin circular arc, so that the first printing model cannot satisfy the slope building angle and the bridge pulling parameter, and the slope building angle and the bridge pulling parameter can be satisfied after the auxiliary printing model is added (the circular arc is thickened).
Step 130: setting a printing program based on the second printing model;
further, the step 130 specifically includes: and slicing the second printing model, and automatically generating a corresponding printing program, namely an NC (numerical control) program by the 3D printer according to the slicing processing result and the parameter setting.
Step 140: heating the printing material;
further, the step 140 specifically includes:
the printer is provided with a vacuum heating bottom plate for heating the printing material, the vacuum pressure and the heating temperature of the vacuum heating bottom plate are adjusted based on the extrusion temperature of the printing material (the heating temperature is to ensure that the temperature of the printing material when the printing material is extruded through the printer nozzle is the extrusion temperature), and the printing material is adsorbed on the vacuum heating bottom plate for heating.
Specifically, the printing material is polypropylene, the vacuum pressure of the vacuum heating base plate is adjusted to be 0.5 to 0.7 atmosphere, the heating temperature is adjusted to be 90 to 110 °, and in this embodiment, the vacuum pressure of the vacuum heating base plate is set to be 0.7 atmosphere, and the heating temperature is 90 °.
Step 150: printing the second printing model based on the printing program to obtain a printing product;
further, the step 150 specifically includes: and the 3D printer imports the printing program and prints the second printing model, so that the printed product is printed.
Step 160: and correcting the printed product to obtain the spinal column corrector.
Further, step 160 includes cutting out a portion of the printed product generated from the secondary printed model to obtain the spinal brace.
In the embodiment, a fused deposition process is adopted for 3D printing, and the fused deposition process is the most commonly applied additive manufacturing technology in a plurality of 3D printing technologies at present. The fused deposition process utilizes a miniature extrusion screw to feed printing materials (granules) from a hopper through a real-time feeding device, the formed printing materials are conveyed towards a printing nozzle by the spiral extrusion action of the screw, and the printing materials are extruded by the screw in the forward conveying process, so that the materials are stacked and formed, and finally, a printing product is formed.
The embodiment uses the granule material of pp (polypropylene material) after the modification, utilize fused deposition process (FDM) to carry out 3D and print, compare in the processing technology among the prior art, production efficiency has been improved, production cycle and manufacturing cost have been reduced, the backbone unscrambler that adopts this kind of mode to print and make can satisfy the patient and to the mechanical properties requirement of product, partial parameter is superior to traditional injection molding process even, the backbone unscrambler who has effectively solved among the prior art adopts the gypsum injection molding to make one by one and forms, make backbone unscrambler machining efficiency low, the technical problem of processing cycle length, the production efficiency is high, low in production cost's beneficial effect has been realized.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages: adopt this application embodiment a 3D of backbone unscrambler prints forming method can print out the backbone unscrambler that satisfies the patient and to the mechanical properties requirement of product fast, compare in the processing technology among the prior art, print production through 3D and improved production efficiency, production cycle and manufacturing cost have been reduced, and the partial parameter of the backbone unscrambler of printing the preparation is superior to the backbone unscrambler of traditional injection molding technology preparation, it adopts the gypsum injection molding to make one by one to effectively to have solved the backbone unscrambler among the prior art and forms, make backbone unscrambler machining efficiency low, the technical problem of processing cycle length, high production efficiency has been realized, beneficial effect that manufacturing cost is low.
It should be understood that the terms of orientation of up, down, left, right, front, back, top, bottom, etc., referred to or may be referred to in this specification, are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed accordingly depending on the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
While the foregoing is directed to the preferred embodiment of the present application, and not to the limiting thereof in any way and any way, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Those skilled in the art can make various changes, modifications and equivalent arrangements to those skilled in the art without departing from the spirit and scope of the present application; moreover, any equivalent alterations, modifications and variations of the above-described embodiments according to the spirit and techniques of this application are intended to be within the scope of the claims of this application.
Claims (10)
1. A3D printing forming method of a spinal brace is characterized by comprising the following steps:
acquiring a first printing model for 3D printing;
obtaining a second printing model based on the first printing model and the printing parameters of the printing material;
setting a printing program based on the second printing model;
heating the printing material;
printing the second printing model based on the printing program to obtain a printing product;
and correcting the printed product to obtain the spinal column corrector.
2. The 3D printing and forming method of the spinal brace according to claim 1, wherein the obtaining the first printing model for 3D printing is specifically:
based on the spine scan results, a spine corrector model for correcting the spine is obtained, thereby obtaining a first printing model for 3D printing.
3. The method of claim 1, wherein obtaining the second printing model based on the first printing model and the printing parameters of the printing material further comprises: print parameters of a print material are acquired.
4. The 3D printing forming method of the spinal brace of claim 3, wherein the obtaining of the printing parameters of the printing material is specifically:
and trial printing a spline of the printing material by using the printer, measuring the mechanical property of the spline by using mechanical testing equipment, and selecting the printing spline with the proper mechanical property so as to obtain the printing parameters of the spline printed with the proper mechanical property.
5. The 3D printing and forming method of the spinal brace of claim 1, wherein the printing parameters comprise extrusion temperature, slope building angle and bridge drawing parameters.
6. The 3D printing forming method of the spinal brace according to claim 5, wherein the obtaining of the second printing model based on the printing parameters and the first printing model specifically comprises:
and adding an auxiliary printing model on the first printing model according to the slope building angle and the bridge pulling parameter, so that the first printing model becomes a second printing model meeting the slope building angle and the bridge pulling parameter.
7. The 3D printing and forming method of the spinal brace according to claim 1, wherein the setting of the printing program based on the second printing model specifically comprises:
and slicing the second printing model, and generating a corresponding printing program by the printer according to the slicing processing result.
8. The 3D printing and forming method of the spinal brace of claim 6, wherein the heating the printing material is specifically:
the printer is provided with a vacuum heating bottom plate for heating printing materials, the vacuum pressure and the heating temperature of the vacuum heating bottom plate are adjusted based on the extrusion temperature of the printing materials, and the printing materials are adsorbed on the vacuum heating bottom plate for heating.
9. The 3D printing method of claim 8, wherein the printing material is polypropylene, the vacuum pressure of the vacuum heating base plate is adjusted to 0.5-0.7 atm, and the heating temperature is adjusted to 90-110 °.
10. The 3D printing molding method of a spinal brace according to claim 6, wherein the correcting the printed product to obtain the spinal brace specifically comprises:
and cutting off the part generated by the auxiliary printing model on the printing product so as to obtain the spinal column corrector.
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CN115195106A (en) * | 2022-06-30 | 2022-10-18 | 上海酷鹰机器人科技有限公司 | Printing process for vertical stacking molding |
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