CN209615834U - Extrusion device for concrete 3D printing - Google Patents
Extrusion device for concrete 3D printing Download PDFInfo
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- CN209615834U CN209615834U CN201921274366.2U CN201921274366U CN209615834U CN 209615834 U CN209615834 U CN 209615834U CN 201921274366 U CN201921274366 U CN 201921274366U CN 209615834 U CN209615834 U CN 209615834U
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- storage vat
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Abstract
The utility model provides a kind of extrusion device for concrete 3D printing, it includes column storage vat, and column storage vat lower end is fixedly connected with funnel-form nozzle；Storage vat and nozzle inner hollow are simultaneously penetratingly equipped with spiral squeezing mechanism；Spiral squeezing mechanism includes the shaft for passing through storage vat and nozzle setting and the helical blade around the setting of shaft spiral；Helical blade top is the reduced spiral blade for matching the variation of nozzle internal diameter, and lower part is isometrical helical blade；Top cover is equipped at the top of storage vat, top cover is provided with central through hole and at least one peripheral through holes；Above top cover, the motor of control shaft is equipped at central through hole, shaft top connects motor after passing through central through hole, and motor obtains external power supply by power supply line.The extrusion device material extrusion of the utility model is thorough, is not easy to plug, and easy cleaning, can significantly reduce the operating cost of cementitious material 3D printing process.
Description
Technical field
The utility model relates to a kind of increasing material manufacturing equipment, and in particular to a kind of extrusion dress for concrete 3D printing
It sets.
Background technique
Increasing material manufacturing (Additive Manufacturing, AM) is commonly called as 3D printing, has merged CAD, material
Material processing with forming technique, based on digital model file, by software and digital control system by dedicated metal material, non-gold
Belong to material and biomaterial for medical purpose, is successively accumulated according to modes such as extruding, sintering, melting, photocuring, injections, produce reality
The manufacturing technology of body article.It is a kind of " oneself relative to cooked mode difference traditional, to raw material removal-cutting, assembling
On down " by the manufacturing method of material addition, from scratch.This makes the past by the constraint of conventionally manufactured mode, and nothing
The complex structural member manufacture that method is realized becomes possible.In the latest 20 years, AM technology achieves quick development, " rapid prototyping system
Make (Rapid Prototyping) ", " 3 D-printing (3D Printing) ", " entity freely manufactures (Solid Free-form
) " etc Fabrication different call the characteristics of never ipsilateral expresses this technology respectively.
Although maximum, the widest in area, most economical construction material-concrete development of Contemporary Architecture dosage only less than
200 years history but has become the huge architecture engineering material of contemporary society's usage amount, does for the development of human society with advance
The contribution that do not replace is gone out.However as the continuous quickening of engineering construction, high energy consumption of the concrete in terms of production application, height
The drawbacks of pollution, also gradually reveals, and seriously hinders its development.To adapt to green manufacturing growth requirement, concrete needs not
Fresh blood is injected disconnectedly.Important symbol of the 3D printing as the third time industrial revolution, is widely used in each research field,
Traditional society is produced and generates enormous impact, becomes and changes following creative technology.
In the prior art, the equipment for cementitious material 3D printing has become research and development focus, has largely about gelling
The research of material 3D printing transmission mechanism is reported, and makes the transmission mechanism of cementitious material 3D printer in stability and accuracy side
Face has been reached higher level.But the research and development for being directed to the extrusion mechanism of cementitious material 3D printing equipment are still inadequate.It is real
In trampling, the performance of extrusion mechanism can also generate vital influence for print procedure and print result.It is being gelled at present
The extrusion mechanism applied in material 3D printing equipment usually has the disadvantage in that 1. extrusion mechanism extrded material dynamics are inadequate, holds
Easily blocking tank body；2. the material hydration rate after extrusion mechanism squeezes out is slow；3. the bad cleaning of charging basket after printing, generally requires dismounting
Batch can individually cleaning.The presence of these problems makes the large-scale promotion of cementitious material 3D printing be restricted to a certain extent.
Utility model content
In view of above-mentioned background, the purpose of this utility model is that: a kind of extrusion device for concrete 3D printing is provided,
The extrusion device material extrusion is thorough, is not easy to plug, and easy cleaning, can significantly reduce the operation of cementitious material 3D printing process at
This.
The above-mentioned purpose of the utility model is achieved through the following technical solutions:
A kind of extrusion device for concrete 3D printing is provided, it includes column storage vat, the column storage vat
Lower end is fixedly connected with funnel-form nozzle；The storage vat and nozzle inner hollow are simultaneously penetratingly equipped with spiral squeezing mechanism；
The spiral squeezing mechanism includes passing through the shaft of the storage vat and nozzle setting and being arranged around the shaft spiral
Helical blade；The helical blade top is the reduced spiral blade of matching nozzle internal diameter variation, and lower part is etc.
Diameter helical blade；Top cover is equipped at the top of the storage vat, the top cover is provided with central through hole and at least one peripheral through holes；
Above the top cover, the motor for controlling the shaft is equipped at the central through hole, the shaft top passes through institute
The motor is connected after stating central through hole, the motor obtains external power supply by power supply line.
In the prior art, extrusion device can also be equipped with funnelform nozzle, but the pyramidal portion of funnel is easy to buildup,
Reason is that the helical blade in its funnel is isometrical helical blade.And the utility model by the helical blade of extrusion according to
The change in shape of storage vat and nozzle inner space is changed to the helical blade of variable diameter, it is discovered by experiment that the utility model
Spiral squeezing mechanism is easy to extracting the material in storage vat into the 3D printing efficiency for substantially increasing cementitious material only, reduces
Operating cost.
In extrusion device described in the utility model, the specific global shape of column storage vat and the funnel
The funnel centrum shape of shape nozzle is not particularly limited；In preferred scheme, the column storage vat is cylindric；It is described
The funnel centrum shape of funnel-form nozzle be cone.
In order to more easily convey cementitious material into the storage vat, in extrusion device described in the utility model,
It is preferred that being equipped with semicircle funnel on any one described peripheral through holes；Port passes through institute below the semicircle funnel
The peripheral through holes stated protrude into inside the column storage vat.On the one hand the semicircle funnel can be used for guiding printing material
Material enters storage vat, on the other hand can provide conveniently, can be guided with certain pressure for the surplus material in cleaning storage vat
Water pipe, which protrudes into, completes cleaning in storage vat, can be avoided water for cleaning splashes in this way, be also easy to the spiral shell in storage vat
The surplus material glued on vane piece and bucket wall cleans up.
In order to make the material squeezed out, quickly aquation, extrusion device described in the utility model are preferably further provided with temperature
Adjustable electric heater unit；The electric heater unit includes temperature controller and the resistance that is electrically connected with the temperature controller
Silk, the temperature controller are mounted on outside the column storage vat, and the resistance wire is arranged in the extrusion device
It is internal.Inside the extrusion device, the resistance wire can be circumferentially arranged on the column storage vat inner wall, or
It is circumferentially arranged in the nozzle lower port, or on the screw rod it is circumferentially arranged.The temperature controller is used
In setting print temperature, before printing squeezes out then control Resistant heating starts to print extruded material to preset temperature.This reality
With novel by the way that the electric heater unit is arranged, printed material can be made to print at preset temperature, the material after printing can be with
Rapid condensation.
In order to make extrusion device described in the utility model flexibly easily be applied to various 3D printing equipment, this is practical new
The outer wall that extrusion device described in type preferably further surrounds the storage vat is equipped with hoop component；The hoop component is by one
Mounting plate, which is pivotally connected a pair, can be opened and closed an armful ring composition；The storage vat is placed in described can be opened and closed and embraces in ring；Described a pair can be opened
It closes an armful ring movable end and is equipped with the catch assembly matched in couples, embrace ring locking for that can be opened and closed by described in, make the storage vat
Fixation is formed with the hoop component；The mounting plate is equipped with several screw holes, for completing between various 3D printing equipment
Be fixedly connected.The utility model keeps the extrusion device disassembly more convenient by the setting of the hoop component.
Extrusion device described in the utility model for cementitious material 3D printing equipment can be widely applied to various with glue
Gel material is the 3D printing in the laboratory and construction site of raw material.Before use, being opened in the cementitious material input storage vat
After opening the motor, motor drives the screw extrusion device rotation, and the helical blade is by the glue in the storage vat
Gel material is pushed downwards, and cementitious material can uniformly and stably be exported along nozzle lower end.Wherein, the helical blade upper section
Reduced spiral blade will can be pushed away under the material agitation in storage vat to the maximum extent, therefore it is hardly remaining solidifying in storage vat
Glue material, nozzle part will not block.In the preferred embodiment of the utility model, the semicircle funnel that is further arranged
The ease of use of the extrusion device can also be significantly improved with hoop component, electric heater unit can be such that cementitious material is squeezed
Timely rapid aquation after out.In short, the extrusion device of the utility model is structurally reasonable, using conveniently, can significantly improve at present
Problem is squeezed out present in cementitious material 3D printing.
Detailed description of the invention
Fig. 1 is extrusion mechanism overall structure diagram described in embodiment 1.
Fig. 2 is the schematic diagram that its internal structure is shown after splitting extrusion mechanism shell described in embodiment 1.
Fig. 3 is the structural schematic diagram of extrusion mechanism semicircle funnel as described in example 2.
Fig. 4 is the structural schematic diagram of extrusion mechanism hoop component as described in example 2.
Fig. 5 is extrusion mechanism overall structure diagram as described in example 2.
Fig. 6 is schematic diagram of the extrusion mechanism described in embodiment 3 in nozzle lower end setting resistance wire.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
Secondly, the utility model combination schematic diagram is described in detail, when the utility model embodiment is described in detail, for convenient for
Illustrate, indicates that the sectional view of apparatus structure can disobey general proportion and make partial enlargement, and the schematic diagram is example,
This should not limit the range of the utility model protection.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication
Between size.
Embodiment 1
A kind of extrusion mechanism can be used for cementitious material 3D printer, as shown in Figure 1, 2, it includes cylindric storage vat 1,
1 lower end of cylindric storage vat is fixedly connected with round funnel-form nozzle 2；2 inner hollow of the storage vat 1 and nozzle
And penetratingly it is equipped with spiral squeezing mechanism；The spiral squeezing mechanism passes through storage vat 1 and shaft 3 is arranged in nozzle 2, surrounds
Reduced spiral blade 4 and isometrical auger helical blade 5 is arranged in the shaft 3 from top to bottom；The reduced spiral blade 4
Blade body be located in the funnel of nozzle 2, fraction is located at 1 lower section of storage vat, helical blade radius from bottom to top according to
The funnel part internal diameter of nozzle 2 becomes larger；Top cover 6 is equipped at the top of the storage vat 1, the top cover 6 is provided with center
Through-hole 7,7 two sides of central through hole are symmetrically provided with 2 peripheral through holes 8；Above the top cover 6, at the central through hole 7
Equipped with the stepper motor 9 for controlling the shaft 3, after 3 top of shaft passes through the central through hole 7 inside storage vat 1,
The stepper motor 9 is connected by shaft coupling 10 above top cover 6, the stepper motor 9 can obtain outer by power supply line
Portion's power supply.Structure semicircle funnel 11 as shown in Figure 3 is installed on any one described peripheral through holes 8；The semicircle
11 lower section port of shape funnel protrudes into 1 inside of storage vat by the peripheral through holes 8 (referring to Fig. 5).The semicircle
11 one side of shape funnel can be used for that printed material is guided to enter storage vat, can be on the other hand the surplus material in cleaning storage vat
It is convenient to provide, and the water pipe with certain pressure can be guided to protrude into and complete cleaning in storage vat, can be avoided water for cleaning in this way
Splashes are also easy to clean up in the surplus material glued on the helical blade and bucket wall in storage vat.
In addition, electric heating is circumferentially arranged on 1 inner wall of storage vat in order to make the material squeezed out quickly aquation
Layer, as shown in Figure 1, 2, the electric heating layer is made of resistance wire 12 and temperature sensor (not shown), the resistance wire
12 pass through the peripheral through holes 8 on top cover 6 by cable 19 is electrically connected with the temperature controller 20 being fixedly mounted on 1 outer wall of storage vat
It connects.The temperature controller 20 and temperature sensor control resistance before printing squeezes out for setting and controlling print temperature
Silk 12 is heated to preset temperature, then starts to print extruded material.By the way that the electric heating layer is arranged, printed material can be made default
At a temperature of print, the material after printing can be with rapid condensation.
Embodiment 2
A kind of extrusion mechanism can be used for cementitious material 3D printer comprising structure is substantially squeezed as described in Example 1
The hoop component 13 as shown in Figure 4 of mechanism and hoop on 1 outer wall of storage vat out；The extrusion mechanism temperature control
Device 20 is fixedly mounted on the side of stepper motor 9, and peripheral through holes 8 and storage on top cover 6 are passed through by 19 (not shown) of cable
Resistance wire and temperature sensor electrical connection inside charging basket；The hoop component 13 include a mounting plate 14,14 liang of mounting plate
End connects a pair of of folded arm 16 by hinge 15, forms to be opened/closed armful of ring；The movable end of a pair of of folded arm 16 is equipped with matching in couples
The catch assembly 17 of conjunction, for locking to be opened/closed armful of ring.As shown in figure 5, the storage vat 1 be placed in it is described to be opened/closed
It embraces in ring, after ring is embraced in the locking of catch assembly 17, storage vat 1 and the hoop component form fixation.As shown in figure 4, described
Mounting plate 14 be equipped with several screw holes 18, for being formed a fixed connection by screw and various 3D printing equipment.The present embodiment
The setting of the hoop component keep extrusion device disassembly more convenient.
Embodiment 3
A kind of extrusion mechanism can be used for cementitious material 3D printer, identical, the area of main structure and embodiment 1 or 2
It is not: as shown in fig. 6, being equipped with resistance wire 12 and temperature sensor (not shown) composition on the inner wall of its 2 lower end of nozzle
Electric heating layer, resistance wire 12 is by passing through peripheral through holes 8 on top cover 6 and fixed along the cable 19 that extrusion mechanism inner wall is arranged
The temperature controller electrical connection being mounted on outside extrusion mechanism.
Claims (7)
1. a kind of extrusion device for concrete 3D printing, it includes column storage vat, and the column storage vat lower end is solid
Surely funnel-form nozzle is connected；The storage vat and nozzle inner hollow are simultaneously penetratingly equipped with spiral squeezing mechanism；Described
Spiral squeezing mechanism includes the shaft for passing through the storage vat and nozzle setting and the spiral around shaft spiral setting
Blade；It is characterized by: the helical blade top is the reduced spiral blade of the matching nozzle internal diameter variation, lower part
For isometrical helical blade；Be equipped with top cover at the top of the storage vat, the top cover be provided with central through hole and at least one around
Through-hole；Above the top cover, the motor for controlling the shaft is equipped at the central through hole, the shaft top is worn
The motor is connected after crossing the central through hole, the motor obtains external power supply by power supply line.
2. extrusion device as described in claim 1, it is characterised in that: the column storage vat is cylindric；The leakage
The funnel centrum shape of bucket-shaped nozzle is cone.
3. the extrusion device as described in claims 1 or 2 any one, it is characterised in that: any one described peripheral through holes
On semicircle funnel is installed；Port is protruded into the column by the peripheral through holes and is stored up below the semicircle funnel
Inside charging basket.
4. the extrusion device as described in claims 1 or 2 any one, it is characterised in that: in the extrusion device further
Equipped with the adjustable electric heater unit of temperature；The electric heater unit includes temperature controller and is electrically connected with the temperature controller
The resistance wire connect, the temperature controller are mounted on outside the column storage vat, and the resistance wire is arranged described
Inside extrusion device.
5. extrusion device as claimed in claim 4, it is characterised in that: the resistance wire is on the column storage vat inner wall
It is circumferentially arranged.
6. extrusion device as claimed in claim 4, it is characterised in that: resistance wire edge in the nozzle lower port
Circumferential setting.
7. extrusion device as described in claim 1, it is characterised in that: be equipped with further around the outer wall of the column storage vat
Hoop component；The hoop component by a mounting plate be pivotally connected a pair can be opened and closed embrace a ring constitute；The column storage vat is placed in
Described be opened and closed is embraced in ring；Described a pair can be opened and closed an armful ring movable end and be equipped with the catch assembly matched in couples, and being used for will
Described be opened and closed embraces ring locking, and the column storage vat and the hoop component is made to form fixation；If the mounting plate is equipped with
Dry screw hole, for completing being fixedly connected between various 3D printing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274366.2U CN209615834U (en) | 2019-08-07 | 2019-08-07 | Extrusion device for concrete 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274366.2U CN209615834U (en) | 2019-08-07 | 2019-08-07 | Extrusion device for concrete 3D printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209615834U true CN209615834U (en) | 2019-11-12 |
Family
ID=68443456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921274366.2U Active CN209615834U (en) | 2019-08-07 | 2019-08-07 | Extrusion device for concrete 3D printing |
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| Country | Link |
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| CN (1) | CN209615834U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111391063A (en) * | 2020-06-02 | 2020-07-10 | 华创智造(天津)科技有限公司 | Print shower nozzle and use its building 3D printer |
| CN111421642A (en) * | 2020-05-11 | 2020-07-17 | 河北工业大学 | Building 3D prints supplementary extrusion system of ultrasonic vibration |
| CN111910924A (en) * | 2020-07-28 | 2020-11-10 | 同济大学 | Concrete 3D printing device with floating forming function |
| KR102333574B1 (en) * | 2020-05-26 | 2021-12-01 | 건설용3차원프린터 협동조합 | 3d printing device for building |
| CN114161544A (en) * | 2021-10-25 | 2022-03-11 | 南京绿色增材智造研究院有限公司 | 3D prints concrete extrusion device for building |
-
2019
- 2019-08-07 CN CN201921274366.2U patent/CN209615834U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421642A (en) * | 2020-05-11 | 2020-07-17 | 河北工业大学 | Building 3D prints supplementary extrusion system of ultrasonic vibration |
| CN111421642B (en) * | 2020-05-11 | 2021-04-09 | 河北工业大学 | Building 3D prints supplementary extrusion system of ultrasonic vibration |
| KR102333574B1 (en) * | 2020-05-26 | 2021-12-01 | 건설용3차원프린터 협동조합 | 3d printing device for building |
| CN111391063A (en) * | 2020-06-02 | 2020-07-10 | 华创智造(天津)科技有限公司 | Print shower nozzle and use its building 3D printer |
| CN111910924A (en) * | 2020-07-28 | 2020-11-10 | 同济大学 | Concrete 3D printing device with floating forming function |
| CN114161544A (en) * | 2021-10-25 | 2022-03-11 | 南京绿色增材智造研究院有限公司 | 3D prints concrete extrusion device for building |
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