CN206840707U - A kind of 3D printing device of level porous material - Google Patents
A kind of 3D printing device of level porous material Download PDFInfo
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- CN206840707U CN206840707U CN201720493426.4U CN201720493426U CN206840707U CN 206840707 U CN206840707 U CN 206840707U CN 201720493426 U CN201720493426 U CN 201720493426U CN 206840707 U CN206840707 U CN 206840707U
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- porous material
- hopper
- pore forming
- forming particles
- particle
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Abstract
This patent discloses a kind of 3D printing device of level porous material.Patent is based on Brazil Nut effect, i.e., the granulate mixture of sizes is placed in container, applies additional concussion, and the larger particle of volume can float, and less particle can sink, and forms the gradient distribution of short transverse.Based on this effect, this patent adds oscillation device in powder bed 3D printing technique.Before stone, pore forming particles are made to be layered in order according to volume size by concussion；One layer of pore forming particles are often spread, then at one layer of liquid photosensitive resin material of laying thereon；Solidify with Digital Mask Technology selective light；Stacked in multi-layers, curing molding；Pore forming particles are removed by the aftertreatment technology such as heating or dissolving, form layering porous material.The porous material obtained by such a method, aperture size change in order along thickness direction, gradient mechanics harmony performance can be produced, for fields such as artificial creature's organization bracket, sound-absorbing material and damping, buffering materials.
Description
Technical field
The utility model belongs to rapid shaping and numerical DC speed field, and in particular to a kind of 3D printing of level porous material
Method and device.
Background technology
Porous structure material is prevalent in nature, such as trees, rock, butterfly as a kind of canonical biometric structural material
Wing, bone and honeycomb etc..Porous construction alleviates the weight of structure, while plays irreplaceable carrying and multi-functional again
Characteristic.Loose structure such as butterfly wing can be effectively increased the light capture rate of material, and the loose structure of bone can improve bone
Intensity and shock resistance, the loose structure of honeycomb makes honeycomb possess natural acoustical absorptivity.Therefore, loose structure is in aviation
Space flight, artificial scaffolds, sound-absorbing material, vibration-absorptive material, separating-purifying, selective absorption, catalyst loading, photoelectric device and sensing
The multiple fields such as device development have important research and application value.
However, currently manufactured loose structure, the size in hole is mostly random or homogeneous distribution, it is difficult to is met under specified conditions
Our requirements to correlated performance.Such as the structure of bone, it is in level pore structure from inside to outside, outermost compact bone substance aperture compared with
Small voidage is low, has very high mechanical property；Internal cancellous bone aperture larger porosity is higher, and mechanical property is relatively
It is low.When skeleton is due to the factor defect such as disease and wound, require that repair materials possess and skeleton from inside to outside
Similar level loose structure.
Brazil Nut effect is a kind of ancient kinetic mechanism.By applying outside concussion, bulky floating, small volume
Sinking, make particle according to volume size be layered.Brazil Nut effect is a kind of simple efficient layering means, according to this principle,
We add particle rocking equipment on the basis of powder bed process, particle is layered in order according to volume size.
Remarkable advantage of the present utility model is：1. the printable hole of level loose structure 2. being distributed in order along short transverse
The size of gap and distribution can only be shaken by adjusting pore forming particles particle diameter and the layered approach of profile adjustment 3. by physics, method letter
It is single, universal strong.
The content of the invention
The utility model proposes a kind of 3D printing device for printing level porous material.The device is based on powder bed work
Skill, 2 oscillators are set in feed cylinder side, the gap being fed between cylinder and mainframe is sealed by u-shape seal ring.Using scraping
Before knife stone, with certain frequency and amplitude concussion feed cylinder special time, large-volume particulate material floats, small size particle
Material sinks, the distribution of forming layer level；The hopper for carrying liquid photosensitive matrix is additionally provided with, has often spread one layer of particle, workbench height
Keep constant, hopper drives liquid matrix, through workbench, liquid matrix is permeated in particle；Stacked in multi-layers, curing molding；
Pore forming particles are removed by the aftertreatment technology such as heating, dissolving, form level porous material.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, critical piece of the present utility model includes mainframe 1, hopper 2, shaped platform
3rd, control system 4, feeding platform 5, feed cylinder 6, oscillator 7, u-shaped packing ring 8, scraper 9, digital mask photocuring system 10.This
Device shares two oscillators 7, respectively positioned at the both sides of feed cylinder 6；U-shaped packing ring 8 is used to be fed between cylinder 6 and mainframe 1
Sealing；Moved along the rail by stepper motor band movable slider, realize hopper, scraper X to motion；Digital mask photocuring system 10 is solid
Due to the top of mainframe 1, directly over shaped platform 3.
The front and rear wall bottom section of the hopper 2 of the utility model is shaped as V-type, is easy to powdering to orient.Its both sides and basal plane
Angle is α and β, α=30-60 °, β=30-60 °.
The pore forming particles material shape of the utility model is spherical, and volume is not of uniform size, and particle size range is at 50 μm -5000
μm；Particle diameter distribution is linear with particle size, i.e., particle diameter is smaller, and numbers of particles is more；Particle diameter is bigger, and numbers of particles is got over
It is few.And be easily distillation, soluble and/or easy fusing material, such as iodine particle, sugar, paraffin can be by the rear place such as heating, dissolving
Science and engineering skill removes.
The liquid matrix of the utility model is photosensitive resin, need to have good mobility it is uniformly penetrated into granular materials
In, range of viscosities is 50-3000CPS (20 DEG C).
The individual layer thickness of the utility model should be greater than 1.2 times of maximum pore forming particles diameter.
Specific implementation process step is as follows：
Step 1：Physical model is established with 3D modeling software (such as SolidWorks), export stl file to Slice Software,
By the data analysis of the system, the mobile data of generation scraper 9, hopper 2 along X-axis, feeding platform 5, shaped platform 3 are along Z axis
The pictorial information and time for exposure t of mobile data, digital mask photocuring system 10.
Step 2：The more uniform pore forming particles of particle diameter distribution gradient are selected, are added in feeding platform 5, and with certain
Amplitude and frequency apply outside concussion, particle is layered in order in short transverse according to volume size；Liquid matrix is injected into
In hopper；Machine zero is carried out to feed cylinder 6, scraper 9, hopper 2, shaped platform 3, as shown in Figure 5.
Step 3：The data obtained according to step 2, the control of control system 4 are fed feeding platform 5 in cylinder 6 and rise 1.2 times of layers
Thick thickness, shaped platform 3 decline the thickness of 1 times of thickness, the powdering a certain distance from left to right of scraper 9.As shown in Figure 6.
Step 4：The homing of scraper 9, as shown in Figure 7.
Step 5：Keep shaped platform 3 it is highly constant, the data obtained according to step 2, control system 4 control hopper 2 to
Certain distance is moved left, liquid photosensitive resin is driven in moving process, during through shaped platform, liquid photosensitive resin penetrates into pore-creating
Grain, as shown in Figure 8.
Step 6：The homing of hopper 2, as shown in Figure 9.
Step 7：The data obtained according to step 2, digital mask photocuring system 10 are opened, elective irradiation 15-20S,
As shown in Figure 10.
Step 7：Repeat step 3-7, stacked in multi-layers shaping.
Step 8:Three-dimensional model is taken out from shaped platform 3, is heated or impregnating handles 2h, remove pore-creating
Grain；Unnecessary photosensitive resin is cleaned using isopropyl acetone solution；Product is put into UV lamp room, curing process 10min.
It is of the present utility model to have an advantage that：1. the printable level loose structure being distributed along short transverse, same layer particle
More homogeneous, increase 2. measures pore forming particles particle diameter distribution to interlayer particle volume successively from the bottom to top, changes a certain particle size range
Particle, can adjust hole size 3. layered mode and only shaken by physics, method is simple, universal strong.
Brief description of the drawings
Fig. 1 is a kind of front view of the 3D printing device of level porous material of this patent.Comprising mainframe 1, hopper 2, into
Type platform 3, control system 4, feeding platform 5, feed cylinder 6, oscillator 7, u-shaped packing ring 8, scraper 9 and digital mask photocuring system
System 10.Wherein, it is pore forming particles to be fed cylinder 6 inner circular region, and filling region is liquid photosensitive resin in hopper 2, the direction of arrow
For mechanism kinematic direction.
Fig. 2 is that Fig. 1 corresponds to top view.
Fig. 3 is I partial enlarged drawing in Fig. 1.
Fig. 4 is II partial enlarged drawing in Fig. 1, and wherein α is scraper anterior angle, and β is scraper relief angle, and the direction of arrow is powdering side
To.
Fig. 5,6,7,8,9,10 are a kind of 3D printing method and step figures of level porous material of this patent.Detailed step is shown in reality
With new content.Wherein, it is pore forming particles to be fed cylinder inner circular region, and filling region is liquid photosensitive resin in hopper, arrow
The direction outgoing mechanism direction of motion.
Figure 11 is a kind of porous material of level of the printing shaping of the 3D printing method and device of level porous material of this patent
Material.20 layers are included altogether, and grey filling region is photosensitive resin, and white space region is the hole after particle removes.
Embodiment
Using the iodine particle that sublimation temperature is 77 DEG C it is pore forming particles in the present embodiment, viscosity is 2000CPS's (20 DEG C)
Photosensitive resin is as host material, and a diameter of 50 μm -400 μm of print hole, printing product is highly 10mm.
Step 1：Physical model is established with 3D modeling software (such as SolidWorks), export stl file to Slice Software,
By the data analysis of the system, the mobile data of generation scraper 9, hopper 2 along X-axis, feeding platform 5, shaped platform 3 are along Z axis
The pictorial information and time for exposure t of mobile data, digital mask photocuring system 10.
Step 2：The more uniform iodine particle of particle diameter distribution gradient is added in feeding platform 5, with certain amplitude and
Frequency applies outside concussion 30 minutes, particle is layered in order in short transverse according to volume size, bottom particle diameter is put down
It is that top is 400 μm, successively excessively for 50 μm；Liquid photosensitive resin is injected into hopper；To feed cylinder 6, scraper 9,
Hopper 2, shaped platform 3 carry out machine zero.As shown in Figure 5.
Step 3：The data obtained according to step 2, control system 4 controls feeding platform 5 to rise 0.6mm, under shaped platform 3
0.5mm, the powdering certain distance from left to right of scraper 9 drop.As shown in Figure 6.
Step 4：The homing of scraper 9, as shown in Figure 7.
Step 5：Keep shaped platform 3 it is highly constant, the data obtained according to step 2, control system 4 control hopper 2 to
Certain distance is moved left, liquid photosensitive resin is driven in moving process, through shaped platform 3, liquid photosensitive resin penetrates into pore-creating
Grain, as shown in Figure 8.
Step 6：The homing of hopper 2, as shown in Figure 9.
Step 7：The data obtained according to step 2, digital mask photocuring system 10 are opened, elective irradiation 20S, are such as schemed
Shown in 10.
Step 7：Repeat step 3-7, stacked in multi-layers shaping, the product of 20 layers of printing, as shown in figure 11.
Step 8:Three-dimensional model is taken out from shaped platform 3,2h is heated in 80 DEG C of water-baths, removes easily distillation particle；
Unnecessary photosensitive resin is cleaned using isopropyl acetone solution；Product is put into UV lamp room, curing process 10min.
Claims (2)
- A kind of 1. 3D printing device that level porous material is printed by shaking, it is characterised in that：Include mainframe (1), hopper (2), shaped platform (3), control system (4), feeding platform (5), feed cylinder (6), oscillator (7), u-shaped packing ring (8), scraper (9), digital mask photocuring system (10)；The present apparatus includes two oscillators (7), respectively positioned at the both sides of feed cylinder (6)；u Type packing ring (8) is used for the sealing being fed between cylinder (6) and mainframe (1)；Moved along the rail, realized by stepper motor band movable slider Hopper, scraper X are to motion；Digital mask photocuring system (10) is fixed on the top of mainframe (1), positioned at shaped platform (3) Surface.
- A kind of 2. 3D printing device that level porous material is printed by shaking according to claim 1, it is characterised in that The front and rear wall bottom section of the hopper (2) is shaped as V-type, is easy to powdering to orient, and its both sides and basal plane angle are α and β, and α= 30-60 °, β=30-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493426.4U CN206840707U (en) | 2017-05-05 | 2017-05-05 | A kind of 3D printing device of level porous material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720493426.4U CN206840707U (en) | 2017-05-05 | 2017-05-05 | A kind of 3D printing device of level porous material |
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| CN206840707U true CN206840707U (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307613A (en) * | 2018-10-18 | 2019-02-05 | 中国石油天然气股份有限公司 | A kind of method and device preparing artificial core |
-
2017
- 2017-05-05 CN CN201720493426.4U patent/CN206840707U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307613A (en) * | 2018-10-18 | 2019-02-05 | 中国石油天然气股份有限公司 | A kind of method and device preparing artificial core |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20201222 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180105 Effective date of abandoning: 20201222 |