CN211053976U - Pile aggregate head 3D and print concrete former - Google Patents
Pile aggregate head 3D and print concrete former Download PDFInfo
- Publication number
- CN211053976U CN211053976U CN201920390451.9U CN201920390451U CN211053976U CN 211053976 U CN211053976 U CN 211053976U CN 201920390451 U CN201920390451 U CN 201920390451U CN 211053976 U CN211053976 U CN 211053976U
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- printing
- hopper
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- nozzle
- pulp
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- 239000004567 concrete Substances 0.000 title claims abstract description 43
- 238000007639 printing Methods 0.000 claims abstract description 153
- 239000004568 cement Substances 0.000 claims abstract description 19
- 238000007790 scraping Methods 0.000 claims abstract description 18
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 11
- 238000010146 3D printing Methods 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 9
- 239000000835 fiber Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 239000004570 mortar (masonry) Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000011448 thixotropic grout Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002699 waste 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
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
A pile aggregate head 3D prints concrete former, the apparatus print head includes printing hopper and printing shower nozzle set up in parallel, the feed inlet of the printing hopper is communicated with aggregate feed system, the feed inlet of the printing shower nozzle is communicated with feed system of thixotropic grout of fast setting; the printing hopper and the printing nozzle are arranged in front and back, and move forward along the same moving path; and a scraping plate is arranged in the middle to scrape the aggregate. During printing, the aggregates are laid firstly, then the quick-setting thixotropic cement paste is spread at a constant speed according to a printing path, the cement paste flows into the aggregate gaps to be quickly set and hardened into a concrete whole, and the concrete whole is formed by stacking layer by layer. The utility model discloses a have that forming process is simple, and production efficiency is high, and low in production cost has solved present mortar 3D and has printed the defect that technology does not have large granule aggregate, the cement quantity is many, the shrink is big and can't add the steel fibre, can be applied to the printing of curved surface wall body, artistic modeling and ornament, is a special 3D and prints concrete forming technology.
Description
Technical Field
The utility model relates to a 3D prints technical field, concretely relates to pile aggregate head flowing 3D and print concrete former.
Background
At present, the 3D printing technology is rapidly popularized in the field of buildings, and concrete is used as a building material with the largest using amount and the widest range in buildings and is a main material of the 3D printing technology for buildings.
The building 3D printing technology conforms to the development of the industrial revolution, and compared with the traditional construction process, the building 3D printing technology has the following advantages:
(1) the construction time on site is reduced through the constant construction speed, and the construction efficiency is improved;
(2) the template is not needed, the waste of the template can be reduced, the construction cost is reduced, and the sustainable construction of the building is improved;
(3) the customizability of the building is strong without using a template, and any detail characteristics, complex curved surfaces, pipelines and the like can be printed, so that the more complex design and aesthetic purposes are realized;
(4) creating a working post based on high-end technology; according to a computer design drawing, the whole process can be controlled by a computer program without manual intervention, which means that the casualty accident risk in the building industry is greatly reduced, a large amount of labor and labor are saved, and the safety measure cost for building construction is reduced;
(5) can reduce the dust and noise pollution of the building, protect the environment and realize green environmental protection.
However, the printing concrete used in the current concrete 3D printing technology is a mortar material, does not have a coarse aggregate of 2-25mm, and does not add steel fibers to solve the brittleness problem of plain concrete; in addition, the mortar material has high cement dosage, large volume shrinkage in the hydration process and easy cracking, thereby causing the quality problem of 3D printing buildings.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned shortcoming, the utility model provides a pile aggregate head flowing 3D and print concrete former, through the mode of quick setting thixotropy grout even filling pile aggregate, ensured 3D and printed concrete finished product quality, satisfy the standard requirement.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a pile aggregate head flowing 3D prints concrete former, includes feeding system, moving mechanism, beats printer head and control system, its characterized in that: the printing head comprises a printing hopper and a printing spray head which are vertically arranged in parallel, a feeding hole of the printing hopper is communicated with a feeding system of aggregate, and a feeding hole of the printing spray head is communicated with a feeding system of quick-setting thixotropic cement paste; the printing hopper is arranged in front of the printing advancing direction, the printing nozzle is arranged behind the printing advancing direction, and the printing hopper and the printing nozzle advance along the same moving route; a scraping plate is arranged between the printing hopper and the printing nozzle, and the aggregate on the printing surface of the printing hopper is scraped; the width of the printing surface of the printing hopper is larger than that of the printing surface of the printing nozzle, and the center lines of the printing surfaces are overlapped.
Wherein, as the utility model discloses an optimal technical scheme, print the hopper and print through rotary device swing joint between the shower nozzle, the neck of printing the hopper is located to the rotary device cover, its lateral wall with print through connecting rod fixed connection between the shower nozzle, realize printing the hopper and print the shower nozzle and print a section relative position at straight and keep unchangeable, adjust relative position through rotary device at both in crooked position, realize advancing along same movement route.
Further, a conveying spiral blade is arranged in the printing hopper; and a nozzle flow control valve is arranged on the printing nozzle.
Further, the scraping plate is fixed on the printing spray head through a connecting rod; the scraping plate is a hard plastic plate or a metal plate and is vertically arranged; the connecting rod is a V-shaped rod or a combination of the V-shaped rod and a straight rod, the middle tip of the V-shaped rod is fixed on a pulp conveying pipe of the printing spray head or in the middle of the straight rod, two end parts of the V-shaped rod are respectively fixed on two sides of the upper edge of the scraping plate, one end of the straight rod is fixed with the outer side wall of the rotating device, and the other end of the straight rod is fixed with the outer side wall of the printing.
Furthermore, the printing nozzle is integrally broom-shaped and comprises a pulp conveying pipe at the top and a pulp pressing part with the trapezoidal and flat bottom, and the bottom of the pulp pressing part is provided with a pulp outlet; and a circle of auxiliary homogenate strips are uniformly arranged around the pulp outlet.
Further, the distance between the printing hopper and the printing nozzle in a standing state is 50-200 mm; the rotating device is formed by combining a gear and a bearing, and the rotating device is rotated by manual or belt transmission to keep the moving routes of the printing spray head and the printing hopper consistent
Compared with the prior art, the utility model discloses a technical advantage lies in:
1. the utility model relates to a pile aggregate head of flow 3D and print concrete former simple structure, the modern design improves on the basis of current 3D printing apparatus, divide into printing hopper and printing shower nozzle with the printer head, the feed inlet and the aggregate feeding system of printing the hopper communicate, the feed inlet and the feeding system of quick setting thixotropy grout of printing the shower nozzle communicate, cement paste body printer head is evenly sprayed grout on flattening aggregate face according to certain width, have the adjustable characteristics of flow, set up around printing hopper and the printing shower nozzle, both go forward along same movement route; the middle of the printing head is provided with the scraping plate to scrape the aggregate, so that the problems of poor flexibility and poor pertinence of the existing 3D printing device that the printing head is of a comprehensive integrated structure are solved;
2. utilize the utility model discloses aggregate head flow 3D that equipment goes on prints concrete forming method has that forming process is simple, and production efficiency is high, and low in production cost's advantage can solve present mortar 3D and print that the technology faced does not have large granule aggregate, the cement quantity is many, the shrink is big, can't add defects such as steel fibre, can use and print curved surface wall body, art molding, municipal administration portion article, decorate the printing manufacturing such as smallclothes.
Drawings
The above and/or other aspects and advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and not by way of limitation, wherein:
FIG. 1 is a schematic structural diagram of a printing head of a pile aggregate pulp 3D printing concrete forming device in the first embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic diagram of the overall structure of a printing head of the pile aggregate pulp-flowing 3D printing concrete forming device in the second embodiment;
fig. 4 is a schematic diagram of layer-by-layer printing of the aggregate slurry flow 3D printing concrete forming method according to the present invention;
fig. 5 is a schematic diagram after n layers are printed in the method for forming concrete by stock flow 3D printing according to the present invention;
fig. 6 is a schematic diagram of a final printed product after removing aggregates on two sides after printing is completed.
Reference numerals: 1-printing hopper, 2-conveying spiral blade, 3-aggregate, 4-printing nozzle, 4.1-slurry conveying pipe, 4.2-grouting part, 4.3-slurry outlet, 5-quick-setting thixotropic cement slurry, 6-connecting rod, 7-scraping plate, 8-concrete core part, 9-aggregate on two sides and 10-rotating device.
Detailed Description
Hereinafter, an embodiment of a pile aggregate pulp 3D printing concrete forming apparatus of the present invention will be described with reference to the accompanying drawings.
The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. It should be noted that for the sake of clarity in showing the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. As shown in fig. 1 and fig. 2, according to a first embodiment of the present invention, a stacked aggregate pulp flow 3D printing concrete forming apparatus includes a feeding system, a moving mechanism, a printing head and a control system, wherein the printing head includes a printing hopper 1 and a printing nozzle 4 which are vertically arranged in parallel, and a conveying spiral blade 2 is arranged in the printing hopper 1; a nozzle flow control valve is arranged on the printing nozzle 4, the nozzle flow control valve is not shown in the figure and is directly controlled by a rear-end slurry conveyor, a feeding hole of the printing hopper 1 is communicated with a feeding system of aggregate 3, and a feeding hole of the printing nozzle 4 is communicated with a feeding system of quick-setting thixotropic cement slurry 5; the printing hopper 1 is arranged in front of the printing advancing direction, the printing nozzle 4 is arranged behind the printing advancing direction, and the printing hopper and the printing nozzle both advance along the same moving route; a scraping plate 7 is arranged between the printing hopper 1 and the printing nozzle 4, aggregates on the printing surface of the printing hopper 1 are scraped, and preferably, the scraping plate 7 is fixed on the printing nozzle 4 through a connecting rod 6; the scraping plate 7 is a hard plastic plate or a metal plate and is vertically arranged; the connecting rod 6 is a V-shaped rod, the middle tip end of the connecting rod is fixed on a pulp conveying pipe 4.1 of the printing spray head 4, and two end parts of the connecting rod are respectively fixed on two sides of the upper edge of the scraping plate 7. The width of the printing surface of the printing hopper 1 is larger than that of the printing nozzle 4, and the central lines of the printing surfaces are overlapped. The printing nozzle 4 is preferably broom-shaped as a whole and comprises a pulp conveying pipe 4.1 at the top and a pulp pressing part 4.2 with the bottom being in a trapezoidal and flat shape, and the bottom of the pulp pressing part 4.2 is provided with a pulp outlet 4.3; a circle of auxiliary homogenate strips are uniformly arranged around the pulp outlet 4.3; the width of the grout outlet 4.3 is according to the printing width that designs and the grout outlet of changing different width, and the grout outlet width is generally not more than the wall body or route line width that design, and the distance is 50 ~ 200mm when printing hopper 1 and printing shower nozzle 4 state of stewing.
As fig. 3 is the utility model relates to an embodiment two, with embodiment one the difference lies in, through rotary device 10 swing joint between printing hopper 1 and the printing shower nozzle 4, rotary device 10 cover is located the neck of printing hopper 1, through connecting rod 6 fixed connection between its lateral wall and the printing shower nozzle 4, realize printing hopper 1 and printing shower nozzle 4 and print section relative position at straight and keep unchangeable, and both adjust relative position through rotary device 10 at crooked position, realize advancing along same moving route. The rotating device 10 is formed by combining a gear and a bearing, and rotates through manual or belt transmission, so that the moving lines of the printing nozzle and the printing hopper are kept consistent. The connecting rod 6 is a combination of a V-shaped rod and a straight rod, the middle tip of the V-shaped rod is fixed in the middle of the straight rod, two ends of the V-shaped rod are respectively fixed on two sides of the upper edge of the scraping plate 7, one end of the straight rod is fixed on the outer side wall of the rotating device 10, and the other end of the straight rod is fixed on the outer side wall of the printing spray head 4.
As shown in fig. 4-6, the aggregate-slurry 3D printing concrete forming method using the aggregate-slurry 3D printing concrete forming apparatus includes the following steps:
preparing aggregate slurry flow 3D printing concrete forming equipment, aggregates and quick-setting thixotropic cement slurry;
setting a printing route according to needs, and inputting the printing route into a control system of the aggregate slurry flow 3D printing concrete forming equipment;
thirdly, feeding the quick-setting thixotropic cement paste 5 into a feeding system communicated with the printing spray head 4, and feeding the aggregate 3 into a feeding system communicated with the printing hopper 1;
step four, starting the aggregate slurry flowing 3D printing concrete forming equipment to perform first-layer printing, and specifically comprising the following steps:
s1, allowing the stone aggregate to enter a printing hopper 1, conveying the stone aggregate by a conveying spiral blade 2, extruding the aggregate 3 from a printing nozzle part, and distributing the aggregate according to a set printing route;
s2, leveling the aggregate distributed by the printing hopper 1 by the scraping plate 6 following the printing hopper 1;
s3, spraying the prepared quick-setting thixotropic cement paste 5 on the leveled aggregate by the printing nozzle 4, allowing the quick-setting thixotropic cement paste 5 to flow into an aggregate gap under the action of gravity and solidify, and allowing the solidified aggregate and the cement paste to form a concrete core part 8; the printing nozzle 4 is used for uniformly spraying quick-setting thixotropic cement paste on the leveling aggregate surface according to a certain width, and has the characteristic of adjustable flow;
step five, after the first layer of printing is finished according to the designed route, the second layer of concrete printing is started, specifically according to the steps one to four, until the printing layer is finished;
and sixthly, after the printing work of the wall or the model set by the printer is finished, removing the aggregates 9 on the two sides of the hardened concrete core 8 to obtain a final printed concrete finished product.
The aggregate 3 comprises crushed stone, pebble, ceramsite lightweight aggregate, industrial tailing crushed aggregate and aggregate made of construction waste, is not limited to the aggregate, has the particle size of 5-25mm, can be mixed with fibers such as steel fibers and polymer fibers and then distributed by a printing hopper 4, and finally steel fiber toughened printed concrete can be formed. The quick-setting thixotropic cement slurry 5 is slurry prepared by stirring cement, mineral admixture, additive and water and has quick-setting performance.
Further, after the model is printed layer by layer according to the set number of layers of the 3D printer, after the sprayed cement paste and the aggregates are hardened together and have certain strength, redundant aggregates are removed and the printed model finished product is finished.
A final printing effect of the aggregate slurry 3D printing concrete forming method is shown in figure 6, after the nth layer is printed and the printing work of a wall body or a design model set by a printer is completed, stone aggregates on two sides of the hardened printed concrete are removed, a hardened concrete core part is left, and a final printed concrete finished product is obtained, wherein the outer vertical surface of the finished product has a certain natural decoration effect due to the fact that the exposed stone surface and the non-smoothness exist on the outer vertical surface of the finished product.
The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.
Claims (6)
1. The utility model provides a pile aggregate head flowing 3D prints concrete former, includes feeding system, moving mechanism, beats printer head and control system, its characterized in that: the printing head comprises a printing hopper (1) and a printing nozzle (4) which are vertically arranged in parallel, a feeding hole of the printing hopper (1) is communicated with a feeding system of aggregate (3), and a feeding hole of the printing nozzle (4) is communicated with a feeding system of quick-setting thixotropic cement paste (5); the printing hopper (1) is arranged in front of the printing advancing direction, the printing spray head (4) is arranged behind the printing advancing direction, and the printing hopper and the printing spray head advance along the same moving route; a scraping plate (7) is arranged between the printing hopper (1) and the printing nozzle (4) and is used for scraping aggregate on the printing surface of the printing hopper (1); the width of the printing surface of the printing hopper (1) is larger than that of the printing nozzle (4), and the center lines of the printing surfaces are overlapped.
2. The pile aggregate pulp flow 3D printing concrete forming equipment as claimed in claim 1, wherein: the printing hopper (1) is movably connected with the printing nozzle (4) through the rotating device (10), the rotating device (10) is sleeved on the neck of the printing hopper (1), the outer side wall of the rotating device is fixedly connected with the printing nozzle (4) through the connecting rod (6), the printing hopper (1) and the printing nozzle (4) are kept unchanged at the straight printing section relative position, the relative positions of the printing hopper and the printing nozzle are adjusted through the rotating device (10) at the bending position, and the printing hopper and the printing nozzle can move forward along the same moving route.
3. The pile aggregate pulp flow 3D printing concrete forming equipment as claimed in claim 1 or 2, wherein: a conveying spiral blade (2) is arranged in the printing hopper (1); and a spray head flow control valve is arranged on the printing spray head (4).
4. The pile aggregate pulp flow 3D printing concrete forming equipment as claimed in claim 3, wherein: the printing spray head (4) is integrally broom-shaped and comprises a pulp conveying pipe (4.1) at the top and a pulp pressing part (4.2) with the trapezoidal and flat bottom, and a pulp outlet (4.3) is formed at the bottom of the pulp pressing part (4.2); a circle of auxiliary homogenate strips is uniformly arranged around the pulp outlet (4.3).
5. The pile aggregate pulp flow 3D printing concrete forming equipment as claimed in claim 3, wherein: the scraping plate (7) is fixed on the printing nozzle (4) through a connecting rod (6); the scraping plate (7) is a hard plastic plate or a metal plate and is vertically arranged; the connecting rod (6) is a V-shaped rod or a combination of the V-shaped rod and a straight rod, the middle tip of the V-shaped rod is fixed on a pulp conveying pipe (4.1) of the printing spray head (4) or in the middle of the straight rod, two ends of the V-shaped rod are respectively fixed on two sides of the upper edge of the scraping plate (7), one end of the straight rod is fixed with the outer side wall of the rotating device (10), and the other end of the straight rod is fixed with the outer side wall of the printing spray head (4).
6. The pile aggregate pulp flow 3D printing concrete forming equipment as claimed in claim 2, wherein: the distance between the printing hopper (1) and the printing nozzle (4) in a standing state is 50-200 mm; the rotating device (10) is formed by combining a gear and a bearing, and the rotating device rotates through manual or belt transmission, so that the moving routes of the printing spray head and the printing hopper are kept consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390451.9U CN211053976U (en) | 2019-03-26 | 2019-03-26 | Pile aggregate head 3D and print concrete former |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920390451.9U CN211053976U (en) | 2019-03-26 | 2019-03-26 | Pile aggregate head 3D and print concrete former |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211053976U true CN211053976U (en) | 2020-07-21 |
Family
ID=71591145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920390451.9U Expired - Fee Related CN211053976U (en) | 2019-03-26 | 2019-03-26 | Pile aggregate head 3D and print concrete former |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211053976U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021562A (en) * | 2021-04-16 | 2021-06-25 | 北京工业大学 | Piezoelectric aggregate automation buries device underground based on cement base 3D prints |
| CN114856135A (en) * | 2022-05-07 | 2022-08-05 | 西安建筑科技大学 | Concrete 3D printing spray head for realizing pore filling and wall surface trowelling |
| CN114856135B (en) * | 2022-05-07 | 2024-05-31 | 西安建筑科技大学 | Realize that hole fills and concrete 3D who wall trowells prints shower nozzle |
-
2019
- 2019-03-26 CN CN201920390451.9U patent/CN211053976U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021562A (en) * | 2021-04-16 | 2021-06-25 | 北京工业大学 | Piezoelectric aggregate automation buries device underground based on cement base 3D prints |
| CN114856135A (en) * | 2022-05-07 | 2022-08-05 | 西安建筑科技大学 | Concrete 3D printing spray head for realizing pore filling and wall surface trowelling |
| CN114856135B (en) * | 2022-05-07 | 2024-05-31 | 西安建筑科技大学 | Realize that hole fills and concrete 3D who wall trowells prints shower nozzle |
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Granted publication date: 20200721 |