CN106313272A - 3D printing method for adding reinforcement-ratio based directional fibers into binding materials - Google Patents
3D printing method for adding reinforcement-ratio based directional fibers into binding materials Download PDFInfo
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- CN106313272A CN106313272A CN201610969870.9A CN201610969870A CN106313272A CN 106313272 A CN106313272 A CN 106313272A CN 201610969870 A CN201610969870 A CN 201610969870A CN 106313272 A CN106313272 A CN 106313272A
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- concrete
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/523—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing metal fibres
-
- 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
- B33Y70/00—Materials specially adapted 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
- B33Y80/00—Products made by additive manufacturing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a 3D printing method for adding reinforcement-ratio based directional fibers into binding materials. The technical idea of the invention is to convert the amount of the corresponding cross-section steel bars into the corresponding amount of the drawn fibers, and according to the direction and position of the reinforcing bar arrangement, and to arrange the reinforcing bars in the fixed direction, fixed quantity and position. The 3D printing method comprises, step 1, using the 3D printer technology with two printing heads, one of which is to print normal concrete layer by layer; step 2, when in the reinforcing bar position to be printed, using the other printing head to print steel fibers by being perpendicular to the concrete according to the needed fiber amount; step 3, inserting the steel fibers into the printed concrete and reserving a part of length outside the layers; step 4, when to print the next layer of concrete, covering the exposed fibers with the reprinted concrete, and having the fibers printed later overlapped in the length direction so as to ensure the transmission of bond anchor force; and others.
Description
Technical field
The present invention relates to a kind of technical improvement method with the Binder Materials such as Gypsum Fibrosum or concrete as print substrate, improve 3D
Print quality.
Background technology
Existing 3D prints and is substantially based on same material or the material of same composition mixing generation, and does not examine
Consider the combination printing of multiple material.This increases material manufacture molding with resin even metal powder etc., after its molding for existing
Intensity high did not also have disadvantage.But the highest with intensity after other molding, there are other bases of special force request after molding
Material, such as Gypsum Fibrosum, cement etc., the structure after its molding is because using or easily ftractureing in loading process, it is impossible to ensure usability very well
Energy.
As a example by concrete, the printing of current 3D concrete is exactly single concrete material, the problem existed: one is only
Fine particulate material can be used as printing shaping raw material, thus relatively thin layer dress can only be used to pile up the one-tenth realizing component
Type, it is difficult to add reinforcing bar in concrete；Two is simultaneously because use existing concrete material all to there is molding time problem, leads
Cause surface and there is wavy surfaces all the time；Owing to interlayer exists different molding time, there is cohesive force defect in interlayer, causes printing
Xoncrete structure stress unfavorable.
If combining metal dust melts welding technology certainly, in concrete print procedure, the construction of truth framework of steel reinforcement is also
Feasible, but its technical difficulty and Financial cost can not accept completely.
Summary of the invention
It is based on the problems referred to above, the directional fiber technology that the present invention proposes, can be the most real while concrete prints
The orientation of existing fiber prints, and required amount of reinforcement is equivalent to quantitative fiber consumption and is arranged in desired area, both avoided general
The utilization rate that the fiber of logical fiber concrete causes in a jumble because of direction is low, and construction when simultaneously overcoming fiber concrete to print is difficult
Degree；What is more important fiber is arranged in force area and tension direction, takes full advantage of the tension characteristic of fiber；And by fibre
The constraint to concrete of the layout of dimension, can reduce the deformation between the stratiform of concrete, can also realize fiber concrete simultaneously and resist
Split feature.
If 3D to be realized prints concrete has the loading characteristic of armored concrete, it is necessary to configured by feature according to cross section
Corresponding steel bar stress.The technological thought of the present invention is corresponding cross section amount of reinforcement to be converted into corresponding stretched fiber use
Amount, and according to steel bar arrangement direction and position, orient, quantitatively arrange with location.The technology of the present invention is not limited to steel fibre, its
He converts all in accordance with stress by fibrid, it is achieved the directional fiber concrete of the specific ratio of reinforcement prints.Use this principle, need to solve
The certainly technical problem of the following aspects.
When one: 3D printer should realize concrete printing, fiber follows isochronous printing.
Two: the fiber consumption of printing realizes fixing quantity according to sectional position and direction.
Three: in the concrete of printing, the fiber of oriented arrangement is disturbed minimum by the concrete of follow-up printing, reduces its direction
Change with position.
To this end, the technical scheme that the present invention is given is:
Binder Materials increases directional fiber based on the ratio of reinforcement 3D print implementation, it is characterised in that include as
Lower step:
Step one, the double printhead 3D printer technology of employing, it is achieved one of them printhead lamellar to normal concrete
Layer prints；
Step 2, when print to need arrange reinforcement location, fiber consumption as required, another printhead be perpendicular to
Concrete printing surface prints steel fibre；
Step 3, steel fibre insert in the concrete printed, and member-retaining portion length is put outside layer；
Step 4, when print next layer concrete time, the fiber part of above-mentioned dew newly printed concrete cover, and with
There is overlap at length direction in the fiber of follow-up printing, to ensure the transmission of bolting force；
Step 5, according to printing the thickness of concrete layer and the length of steel fibre, the printing of steel fibre can be beaten at concrete
Spaced printing after printing to enough numbers of plies；
Step 6, in the wall thickness direction of print structure, can according to stress and structure be required for print concrete arrange
Different printing fibre densities.
For increasing the fiber of interlayer stress or vertical applied force, increase printable layer and interlayer fiber can with vertical type or
Tilting is arranged.
For strengthening the stress fiber of bending resistance or tension, increase at the inside of current printable layer or the fiber on surface, and beat
Print layer lays the horizontal direction that in-plane is consistent.
Described reinforcing fiber can be in works thickness direction and short transverse, different print areas or interval, according to
Stress needs to arrange according to quantity fiber.
In print procedure, need to extrude Binder Materials respectively by multiple printheads (or extruder) or mixing printhead
With lay fiber, lay fiber printhead can be unidirectional fixing can also be that direction is adjustable.
The control parameter of fiber consumption and direction and position needs to write in advance when structural model cutting processes, and with phase
Corresponding printhead corresponding (this technology realizes, and can be realized by existing prior art).
The most each technical scheme, during using Binder Materials as the 3D printing shaping of base material, being subject to according to structure
Power feature and needs, position, orient and quantitatively arrange reinforcing fiber, is the increasing material manufacture of directional fiber material based on the ratio of reinforcement
Technology.
The inventive method, its range is be applicable to all increasing material manufacturing technologies with Binder Materials as base material.
Vertical well known, existing reinforced concrete structure is with reinforcing bar as inner skeleton, and concrete is that outer wrap becomes one
Body forms common beaer.The arrangement of reinforcement consumption of reinforced concrete structure all can be converted into the amount of reinforcement on the cross section i.e. ratio of reinforcement.
And arrange different according to stress with detailing requiments, reinforcing bar is pressed ad-hoc location on cross section and is arranged.
3D prints the increasing material technology that concrete uses, by layer plane the adding up at the 3rd i.e. thickness direction of yardstick printed,
Thus realize 3D printing shaping.The method that this technology realizes at present substantially uses the concrete of like combinations composition, i.e.
Making employing have fibre-reinforced concrete, fiber is also the concrete becoming identical component as fixing component mixing in advance.In order to
Adapting to it and print sizing, the fiber concrete of this mixing is usually the fiber concrete of common morphological, and the fiber i.e. added is adopted
Be non-directional because its commensurate structure useless stress need, if not increasing framework of steel reinforcement, this kind of concrete can only
Can be regarded as the plain concrete after fiber reinforcement, or only there is the fiber concrete of common effect of prestressed.This also causes this type of concrete
The load of complexity cannot be born as real reinforced concrete structure, more can not bear the special load effects such as earthquake.Thus,
The use of the concrete of 3D printing at present is confined in low rise buildings or non-stress structure use.
Accompanying drawing explanation
Fig. 1 is embodiment one schematic diagram, it is shown that be vertically arranged fiber and reinforcing bar Density Distribution
Fig. 2 is embodiment two schematic diagram, it is shown that diagonally disposed fiber and reinforcing bar Density Distribution
Fig. 3 is embodiment three schematic diagram, it is shown that oblique and level is to arranging fiber and Density Distribution
Numeral labelling:
The concrete layer of 1-printhead extrusion
2-penetrates the vertical or diagonally disposed fiber of upper and lower printable layer
Horizontally disposed fiber in 3-printable layer
4-prints the most horizontally disposed fiber
The concrete (vertical both sides layout fiber) of 5-printhead extrusion
The concrete (being vertically evenly arranged fiber) (Vertical Reinforcement rate is maximum) of 6-printhead extrusion
The concrete (the most not arranging fiber) (Vertical Reinforcement rate is zero) of 7-printhead extrusion
The concrete (thickness direction does not arrange horizontal fibre) (the thickness direction ratio of reinforcement is zero) of 8-printhead extrusion
The concrete (horizontal fibre is arranged in thickness direction local) of 9-printhead extrusion
The concrete (thickness direction is evenly arranged horizontal fibre) (the thickness direction ratio of reinforcement is maximum) of 10-printhead extrusion
Detailed description of the invention
During the present invention is directed to increase the extrusion molding in material manufacture (3D printing) technology, according to the structure stress need manufactured
Want, print procedure increases the enhancement techniques of fiber.Its know-why is in existing 3D printing technique, according to printout
Force request, and be subject at different parts (as interval in different-thickness region, differing heights), different loading characteristic according to works
Force direction (such as tension direction, principal tensile stress direction), the fiber bar of increase requirement is internal or molding interlayer in extruded material,
Realize the location of reinforcing fiber, orientation and quantitatively lay, can overcome and be subject to present in existing single or homogeneous mixing file printing
The unreasonable problem of power, improves existing Binder Materials (being similar to Gypsum Fibrosum, cement, concrete or existing homogeneous mixed-fiber reinforced concrete)
Defect in printing for base material.
Do to be further described to technical solution of the present invention below in conjunction with drawings and Examples.
Embodiment one
Binder Materials increases directional fiber based on the ratio of reinforcement 3D print implementation, it is characterised in that include as
Lower step:
Step one, the double printhead 3D printer technology (this technology is already belonging to prior art) of employing, it is achieved one of them is beaten
The platy layer of normal concrete is printed by print head；
Step 2, when print to need arrange reinforcement location, fiber consumption as required, another printhead be perpendicular to
Concrete printing surface prints steel fibre；
Step 3, steel fibre insert in the concrete printed, and member-retaining portion length is put outside layer；
Step 4, when print next layer concrete time, the fiber part of above-mentioned dew newly printed concrete cover, and with
There is overlap at length direction in the fiber of follow-up printing, to ensure the transmission of bolting force；
Step 5, according to printing the thickness of concrete layer and the length of steel fibre, the printing of steel fibre can be beaten at concrete
Spaced printing after printing to enough numbers of plies；
Step 6, in the wall thickness direction of print structure, can according to stress and structure be required for print concrete arrange
Different printing fibre densities.
Embodiment based on the present embodiment, by arranging vertical fiber, to overcome transversely deforming, strengthens surface and resists
Fragility.
Embodiment two
Step one, use multiple printhead, it is achieved one of them printhead prints (this skill to the platy layer of normal concrete
Art can also be realized by existing prior art), other printhead prints fibers；
Step 2, when print to need arrange reinforcement location, according to conversion fiber consumption, direction and position, by difference
Printhead inserts fiber by specific direction in the concrete printed；
Step 3, fiber insert in the concrete printed, and member-retaining portion length is put outside layer；
Step 4, when print next layer concrete time, printhead direction of travel should be with diagonally disposed fiber collection inclination side
To on the contrary, it is to avoid change machine direction.The fiber part of above-mentioned dew is newly printed concrete and is covered, and with the fibre of follow-up printing
Tie up and there is overlap at length direction, to ensure the transmission of bolting force；
Step 5, according to printing the thickness of concrete layer and the length of steel fibre, the printing of steel fibre can be beaten at concrete
Spaced printing after printing to enough numbers of plies.
Step 6, in the wall thickness direction of print structure, can according to stress and structure be required for print concrete arrange
Different printing fibre densities.
The present embodiment innovation point: arrange oblique fiber, has embodiment one advantage simultaneously, to overcome the anti-of structure
The ability of cutting is main.
Embodiment three
Step 1, use multiple printhead, it is achieved the platy layer of normal concrete is printed by one of them printhead, other
Printhead prints fiber；
If concrete extrusion amount when step 2 prints is few, horizontal fibre prints and can arrange at interlayer；Best mode
It is to fiber in the internal directly printing level of extruded stock of concrete.This needs when concrete extrusion, synchronizes extrusion printhead
The horizontal continuity fiber of direction of travel, even continuous print iron wire.
Step 3, the fiber position as required of required layout, according to fiber consumption, direction and the position of conversion,
In the concrete printed, fiber is inserted by specific direction by identical printhead.
Step 4, fiber insert in the concrete printed, and member-retaining portion length is put outside layer.
Step 5, when print next layer concrete time, printhead direction of travel should be with diagonally disposed fiber collection incline direction
On the contrary, it is to avoid change machine direction.The fiber part of above-mentioned dew is newly printed concrete and is covered, and with the fiber of follow-up printing
Overlap is there is, to ensure the transmission of bolting force at length direction.
Step 6, according to printing the thickness of concrete layer and the length of steel fibre, the printing of steel fibre can print at concrete
Spaced printing after enough numbers of plies.
Step 7, in the wall thickness direction of print structure, can according to stress and structure be required for print concrete arrange not
Same printing fibre density.
The present embodiment innovation point: arrange multidirectional fiber, has the advantage of embodiment two simultaneously, add interlayer and
Level in Ceng realizes certain bending resistance to fiber, thus realizes multidirectional stressed oriented control.
Above example is all as a example by concrete, only presently preferred embodiments of the present invention, not in order to limit this
Invention.All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included in this
Within bright protection domain.
Claims (4)
1. the 3D increasing directional fiber based on the ratio of reinforcement in Binder Materials prints implementation, it is characterised in that include as follows
Step:
Step one, the double printhead 3D printer technology of employing, it is achieved the platy layer of normal concrete is beaten by one of them printhead
Print；
Step 2, when print to need arrange reinforcement location, fiber consumption as required, another printhead be perpendicular to coagulation
Soil printing surface prints steel fibre；
Step 3, steel fibre insert in the concrete printed, and member-retaining portion length is put outside layer；
Step 4, when printing next layer concrete, the fiber part of above-mentioned dew is newly printed concrete and is covered, and with follow-up
There is overlap at length direction in the fiber printed, to ensure the transmission of bolting force；
Step 5, according to printing the thickness of concrete layer and the length of steel fibre, the printing of steel fibre can print at concrete
Spaced printing after enough numbers of plies；
Step 6, in the wall thickness direction of print structure, can according to stress and structure be required for print concrete difference is set
Printing fibre density.
2. the method for claim 1, it is characterised in that described reinforcing fiber can be at works thickness direction and height
Degree direction, different print areas or interval, need to arrange according to quantity fiber according to stress.
3. method as described in claim 1 or 2, it is characterised in that increase interlayer stress or the fiber of vertical applied force, increase
Fiber at printable layer with interlayer can be arranged with vertical type or tilting.
4. method as described in claim 1 or 2, it is characterised in that for strengthening the stress fiber of bending resistance or tension, increase
At the inside of current printable layer or the fiber on surface, lay, with printable layer, the horizontal direction that in-plane is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969870.9A CN106313272B (en) | 2016-10-28 | 2016-10-28 | Increase the 3D printing implementation of the directional fiber based on the ratio of reinforcement in cementitious material |
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|---|---|---|---|
| CN201610969870.9A CN106313272B (en) | 2016-10-28 | 2016-10-28 | Increase the 3D printing implementation of the directional fiber based on the ratio of reinforcement in cementitious material |
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| CN106313272A true CN106313272A (en) | 2017-01-11 |
| CN106313272B CN106313272B (en) | 2018-07-03 |
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Cited By (22)
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| CN106891524A (en) * | 2017-04-21 | 2017-06-27 | 吉林大学 | Fluid matrix middle short fiber NW-TFT 3D printing method and device |
| CN107053427A (en) * | 2017-01-24 | 2017-08-18 | 北京交通大学 | A kind of 3D printing method of the monorail transit concrete component based on assembled technology |
| CN107190913A (en) * | 2017-05-03 | 2017-09-22 | 中国建筑股份有限公司 | A kind of 3D printing unreinforced horizontal carrier member |
| CN107575028A (en) * | 2017-09-05 | 2018-01-12 | 中建商品混凝土有限公司 | The total implementation devices and methods therefor of 3D printing armored concrete structure |
| CN108708455A (en) * | 2018-08-10 | 2018-10-26 | 河北工业大学 | A kind of integrated constructing device and method of 3D printing FRP tendons concrete structure |
| CN109129818A (en) * | 2018-09-06 | 2019-01-04 | 浙江大学 | A kind of method of construction and composite beam of the composite beam of 3D printing braiding integrated molding |
| CN109129827A (en) * | 2018-09-06 | 2019-01-04 | 浙江大学 | A kind of method of construction and combined column of the combined column of 3D printing braiding integrated molding |
| CN109227875A (en) * | 2018-09-06 | 2019-01-18 | 浙江大学 | A kind of method of construction of 3D printing braiding integrated molding building |
| CN109304788A (en) * | 2018-09-06 | 2019-02-05 | 浙江大学 | A kind of method of construction and composite plate of the composite plate of 3D printing braiding integrated molding |
| CN109680954A (en) * | 2019-01-29 | 2019-04-26 | 中国建筑第八工程局有限公司 | Interlayer reinforces 3D printing concrete structure and its construction method |
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| CN111941584A (en) * | 2020-07-28 | 2020-11-17 | 同济大学 | 3D printing device and method suitable for fiber cement-based concrete material |
| CN112759314A (en) * | 2021-04-07 | 2021-05-07 | 西南交通大学 | Basalt fiber composite reinforced concrete intelligent 3D printing device |
| CN113024137A (en) * | 2021-03-12 | 2021-06-25 | 西安建筑科技大学 | Device and method for enhancing bonding strength between 3D (three-dimensional) construction layers |
| CN113613855A (en) * | 2019-03-25 | 2021-11-05 | 德累斯顿理工大学 | Method and device for producing a reinforced concrete component and concrete component |
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| CN107053427A (en) * | 2017-01-24 | 2017-08-18 | 北京交通大学 | A kind of 3D printing method of the monorail transit concrete component based on assembled technology |
| CN106891524A (en) * | 2017-04-21 | 2017-06-27 | 吉林大学 | Fluid matrix middle short fiber NW-TFT 3D printing method and device |
| CN107190913A (en) * | 2017-05-03 | 2017-09-22 | 中国建筑股份有限公司 | A kind of 3D printing unreinforced horizontal carrier member |
| CN107575028B (en) * | 2017-09-05 | 2021-04-06 | 中建商品混凝土有限公司 | Integrated implementation device and method for 3D printing reinforced concrete structure |
| CN107575028A (en) * | 2017-09-05 | 2018-01-12 | 中建商品混凝土有限公司 | The total implementation devices and methods therefor of 3D printing armored concrete structure |
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