CN116816092A - Printing construction method for building 3D printing automatic feeding based on double mixing pumps - Google Patents
Printing construction method for building 3D printing automatic feeding based on double mixing pumps Download PDFInfo
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- CN116816092A CN116816092A CN202310582965.5A CN202310582965A CN116816092A CN 116816092 A CN116816092 A CN 116816092A CN 202310582965 A CN202310582965 A CN 202310582965A CN 116816092 A CN116816092 A CN 116816092A
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- 238000002156 mixing Methods 0.000 title claims abstract description 73
- 238000007639 printing Methods 0.000 title claims abstract description 67
- 238000010146 3D printing Methods 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 70
- 239000000843 powder Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 10
- 239000004570 mortar (masonry) Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Civil Engineering (AREA)
- Dispersion Chemistry (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The invention discloses a printing construction method of building 3D printing automatic feeding based on a double mixing pump, which comprises the following steps: preparing a printing material by a double-mixing pump, wherein the double-mixing pump comprises a dry powder pump, a water pump and a mixer, and the dry powder and the water are mixed into a mixture by the mixer to be output; the automatic feeding of printing materials is performed by utilizing a pneumatic conveying line and an automatic control system, the printing speed and the construction progress are controlled by the automatic control system, the pneumatic conveying line is connected between an outlet of the mixer and the 3D printing equipment by adopting a pneumatic conveying system, and the automatic control system is controlled to connect the 3D printing equipment and the double mixing pump. The invention utilizes the double mixing pump to mix materials, so that the materials are uniform, and the phenomena of pipeline blockage and material waste are avoided. Meanwhile, automatic feeding is realized by utilizing a pneumatic conveying line and an automatic control system, and efficient supply of building 3D printing materials is realized. The equipment can be conveniently controlled and regulated through the remote control system, and the flexibility and the efficiency of construction are improved.
Description
Technical Field
The invention relates to the technical field of building 3D printing, in particular to a printing construction method for building 3D printing automatic feeding based on a double-mixing pump.
Background
Building 3D printing technology is a manufacturing technology that rapidly converts digital models into solid building components. Compared with the traditional building construction mode, the building 3D printing technology has the advantages of high construction speed, high component precision, suitability for complex structures, capability of greatly reducing manpower and the like. In architectural 3D printing, material feed is an important one of them. Currently, commonly used building 3D printing materials mainly comprise mortar, cement, gypsum, concrete and the like. During printing, these materials need to be fed by means of pumps or presses. However, the feeding mode often has the problems of uneven feeding, material waste and the like in actual use.
The building 3D printing process can realize rapid 3D printing and forming under the condition of no template/film, so that cement-based materials used for building 3D printing have time-varying characteristics, hardening phenomenon can occur in a short time, and high requirements are provided for pumping equipment and cleaning equipment for printing materials. The printing material cannot stay in the pumping device for too long, i.e. needs to be pumped to the printing head device before the hydration thermal reaction of the printing material causes hardening, and the printing material is printed into a required component according to a specified printing route, and meanwhile, the printing material is required to be quickly cleaned after the printing is finished so as to avoid pipe blockage.
Meanwhile, after wet mixing, materials are not pumped out for a long time often, so that pipelines are easy to be blocked, and construction difficulty is increased. The 3D printing technology is widely applied to building construction, and the advantages of high efficiency, rapidness, high precision and the like can be realized through robot operation. However, in practical applications, the 3D printing device has been a bottleneck problem in seeking a stable raw material supply. The traditional method is short-distance wet conveying, the time required from the water adding to the pumping completion is long, and the blocking phenomenon caused by wet mixed materials can occur in the construction process.
The 3D printing feeding system conventionally used comprises a stirrer, a mortar pump, a feeding pipe and the like, the hardening time of required printing materials is generally controlled to be about 20-40 minutes, and proper proportion is selected according to factors such as the size, the line width and the external environment of the printed construction, so that the 3D printing forming of the component is realized.
The common construction method is that the required material components are weighed firstly, then the required powder is fully stirred according to the proportioning requirement, a certain amount of water is added according to the proportioning requirement after the required powder is uniform, then the mixture is fully stirred, the dry material and the water are fully and uniformly stirred, and then the mixture is sent into a mortar pump and is pumped to a printing head by the mortar pump. If the printing member is thin, the printing efficiency is relatively slow, and hydration thermal reaction of the material can occur during the period to harden the material, so that wet materials in a storage bin of the mortar pump cannot stay for too long, otherwise risks that the pipe is blocked and equipment is blocked.
Limited by the limitations of stirring and pumping equipment, building 3D printing systems and processes present significant problems in the feed link. At the same time, the feed pattern also makes the material properties (material rheological properties) different from line to line of the printing member. So that a certain color difference occurs between the printed lines.
Disclosure of Invention
The invention aims to provide printing construction of automatic feeding for 3D printing of a building based on a double-mixing pump, which can effectively avoid the problems of uneven feeding, blockage of a pipeline and the like and improve the construction efficiency and quality.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a printing construction method of building 3D printing automatic feed based on double mixing pumps comprises the following steps:
preparing a printing material by a double-mixing pump, wherein the double-mixing pump comprises a dry powder pump for conveying dry powder, a water pump for conveying water and a mixer connected with the two pumps, and mixing the dry powder and the water into a mixture through the mixer to be output;
the automatic feeding of printing materials is performed by utilizing a pneumatic conveying line and an automatic control system, the printing speed and the construction progress are controlled by the automatic control system, the pneumatic conveying line is connected between an outlet of the mixer and the 3D printing equipment by adopting a pneumatic conveying system, and the automatic control system is controlled and connected with the 3D printing equipment and the double mixing pump.
As a further aspect of the present invention, the step of preparing a printing material by a twin mixing pump comprises:
determining the types and the proportions of dry powder to be mixed, and respectively placing different types of dry powder into a dry powder box;
the double mixing pump starts to work, the dry powder pump pumps the corresponding dry powder out of the dry powder box, and the water pump pumps the water out of the water box;
the dry powder and water enter a mixer from the outlets of the two pumps, and are uniformly mixed by stirring equipment in the mixer;
the mixer is provided with a flowmeter and a metering pump, and the flow of the dry powder and the flow of the water are monitored in real time, so that the mixing according to the preset proportion is ensured.
As a further scheme of the invention, a feeder with a material capacity detection function is arranged at the inlet of the 3D printing equipment, and when the material capacity is detected to be lower than the lowest level, a signal is sent to control the double-mixing pump to increase or decrease the pumping speed.
As a further aspect of the present invention, the automatic control system controls the 3D printing apparatus and the dual mixing pump through a remote control system.
The invention adopts the technical proposal, which has the following beneficial effects:
the double mixing pump is utilized to mix materials, so that the materials are uniform, and the phenomena of pipeline blockage and material waste are avoided. Meanwhile, automatic feeding is realized by utilizing a pneumatic conveying line and an automatic control system, and efficient supply of building 3D printing materials is realized. The equipment can be conveniently controlled and regulated through the remote control system, and the flexibility and the efficiency of construction are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a printing construction method of building 3D printing automatic feeding based on a double mixing pump according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The embodiment of the invention provides a printing construction method for automatic feeding of building 3D printing based on a double-mixing pump, which comprises the following implementation steps:
1. preparing a printing material: selecting proper materials and proportions, and preparing a printing material by a mixing technology through a double mixing pump;
a double mixing pump is a device capable of quantitatively mixing dry powder and water and outputting a mixed liquid. It consists of two independent pumps (dry powder pump and water pump) and a mixer, the dry powder pump and water pump are used to deliver dry powder and water respectively. The two pumps mix the dry powder and water into a uniform mixture through a mixer and then output the mixture. In operation, the mixing ratio and output can be precisely controlled by controlling the flow rates of the dry powder and the water.
The double-mixing pump is generally provided with accessories such as a flowmeter, a metering pump, a mixer, a PLC control system and the like, so that the equal output of the multi-component polymer mortar dry powder can be realized, and the components of the output materials are consistent. The specific implementation process is as follows:
(1) Determining the types and the proportions of dry powder to be mixed, and respectively placing different types of dry powder into a dry powder box;
(2) The double mixing pump starts to work, and the dry powder pump and the water pump respectively pump the corresponding dry powder and water out of the tank;
(3) The dry powder and water enter a mixer from the outlets of the two pumps, and are uniformly mixed by stirring equipment in the mixer;
(4) The mixer is provided with a flowmeter and a metering pump, so that the flow of the dry powder and the flow of the water can be monitored in real time, and the mixing according to a preset proportion is ensured;
the feeding method is characterized in that the front end is used for mixing multi-component dry materials, then the dry materials are injected into a storage bin, the storage bin is connected with double-mixing pumping equipment through a butterfly valve or other switch valves, the feeding method is in a normally open state, the upper part of the storage bin is sealed by a bin door, and the bin door is closed after the storage bin is full, so that the isolation between the dry materials and the external environment is realized, and the dry materials are prevented from being wetted.
Compared with a disc type batch mixer and other continuous slurry mixing pumps, the horizontal and vertical double stirring technology of the double mixing pump has an incomparable stirring function, and the rotary automatic water adding technology enables water and dry powder to be more compatible, and the horizontal and vertical double oversized stirring cavities give more sufficient stirring to wet slurry; in addition, the level gauge in the vertical stirring cavity is used for controlling the wet slurry position, so that the problem of wet slurry 'back flow' existing in other slurry mixing pumps is avoided. The required stirring effect can be better obtained by selecting a plurality of types of longitudinal stirring shafts, and even the extremely light mortar products.
Therefore, the double mixing pump is utilized to realize horizontal-vertical twice stirring, and the unique water-cement combination mode ensures that dry-mixed mortar can be stirred and mixed uniformly in a short time, and pumping is carried out while mixing, thereby being more beneficial to pumping and printing construction and reducing the possibility of pipe blockage.
The invention innovatively adopts double-mixing pump pumping equipment, changes the mixing and pumping modes of the existing building 3D printing materials, realizes equal mixing, equal pumping, real-time wet mixing, real-time pumping and the like, and basically keeps the time of material hydration thermal reaction among printing lines of the components consistent, so that the overall material performance of the components is stable.
2. Designing a printing member: designing a proper printing component according to a CAD model of a building and actual requirements, wherein the proper printing component comprises requirements of structural size, strength, toughness and the like;
3. designing a printing path: according to the design requirement of the printing component, a proper printing path is designed to ensure the precision and quality of the printing component;
4. mixing materials by a double mixing pump: and mixing materials by using a double mixing pump so as to ensure uniformity and stability of the materials. The double mixing pump is to pump the mixture repeatedly and to shear at high speed for homogeneous mixing.
5. Automatic feeding: automatic feeding of building 3D printing materials is achieved through a pneumatic conveying line and an automatic control system (PLC), and printing speed and construction accuracy are controlled through the control system. In the material feeding process, the double mixing pump can ensure uniformity of materials, and avoid pipeline blockage and waste of materials.
The pneumatic conveying line adopts a pneumatic conveying system and is connected between an outlet of the mixer and an inlet of the 3D printing equipment (namely a 3D printer), and the automatic control system is connected with the 3D printing equipment and the double-mixing pump in a control manner. Preferably, a feeder with a material capacity detection function is arranged at the inlet of the 3D printing equipment, and when the material capacity is detected to be lower than the lowest level, a signal is sent to control the double-mixing pump to increase or decrease the pumping speed.
The pneumatic conveying system can automatically convey the bulk mortar in the movable silo to other equipment or bins positioned on the working surface in the form of dry powder, and the conveying height can reach 100-150 meters; and no segregation problem occurs.
6. Remote control: device operation and monitoring may be performed at a remote location using remote control technology. The automatic feeding control and adjustment of the double-mixing pump can be realized through the remote control system, and the automatic control system is connected with the 3D printing equipment and the double-mixing pump through the remote control system.
The manner of interconnecting two or more computers in different network ranges by different means such as computer network, internet access, remote dialing, etc. is called remote control; remote control systems are broadly referred to as software systems that incorporate remote control technology and may be used for remote computer configuration, software installation, modification, etc.
With reference to fig. 1, a flowchart of a specific embodiment of a printing construction method for building 3D printing automatic feeding based on a double-mixing pump according to the present invention is provided, and specific implementation steps are as follows:
1. preparation: including preparing building 3D printing equipment, dual mixing pumps, automatic control systems, etc. and performing equipment and plumbing inspection and maintenance work.
2. Preparing a printing material: the printing material is prepared by mixing technology by selecting proper materials, wherein the printing material can comprise cement, fiber, mortar, additive and the like.
3. Designing a printing member: and designing a proper printing component according to the CAD model of the building and the actual demand, wherein the proper printing component comprises the requirements of structural size, strength, toughness and the like.
4. Designing a printing path: according to the design requirement of the printing component, a proper printing path is designed to ensure the precision and quality of the printing component.
5. Starting the double mixing pump: the dual mixing pump agitation and pumping apparatus is activated by the control system and the apparatus and tubing are inspected and cleaned prior to use.
6. Remote control double-mixing pump automatic feeding: through remote control system, monitor and adjust the operation of double mixing pump, guarantee homogeneity and the stability of material.
7. Printing is started: before printing, parameters such as a printing component, a printing path, a printing speed and the like are ensured to meet design requirements. And starting the building 3D printing equipment to start printing.
8. Monitoring and adjusting: and the printing process is monitored and regulated in real time through the control system, so that the construction quality and efficiency are ensured.
The invention has the advantages that the double mixing pump is utilized to mix materials, so that the materials are uniform, and the phenomena of pipeline blockage and material waste are avoided. Meanwhile, automatic feeding is realized by utilizing a pneumatic conveying line and an automatic control system, and efficient supply of building 3D printing materials is realized. The equipment can be conveniently controlled and regulated through the remote control system, and the flexibility and the efficiency of construction are improved.
Although embodiments of the invention have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the invention as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the invention, provided that such modifications are within the scope of the appended claims.
Claims (4)
1. The utility model provides a printing construction method of building 3D printing automatic feed based on two thoughtlessly pump which characterized in that includes:
preparing a printing material by a double-mixing pump, wherein the double-mixing pump comprises a dry powder pump for conveying dry powder, a water pump for conveying water and a mixer connected with the two pumps, and mixing the dry powder and the water into a mixture through the mixer to be output;
the automatic feeding of printing materials is performed by utilizing a pneumatic conveying line and an automatic control system, the printing speed and the construction progress are controlled by the automatic control system, the pneumatic conveying line is connected between an outlet of the mixer and the 3D printing equipment by adopting a pneumatic conveying system, and the automatic control system is controlled and connected with the 3D printing equipment and the double mixing pump.
2. The printing construction method of building 3D printing automatic feed based on a double mixing pump according to claim 1, wherein the step of preparing the printing material by the double mixing pump comprises:
determining the types and the proportions of dry powder to be mixed, and respectively placing different types of dry powder into a dry powder box;
the double mixing pump starts to work, the dry powder pump pumps the corresponding dry powder out of the dry powder box, and the water pump pumps the water out of the water box;
the dry powder and water enter a mixer from the outlets of the two pumps, and are uniformly mixed by stirring equipment in the mixer;
the mixer is provided with a flowmeter and a metering pump, and the flow of the dry powder and the flow of the water are monitored in real time, so that the mixing according to the preset proportion is ensured.
3. The printing construction method of building 3D printing automatic feeding based on double mixing pumps according to claim 1, wherein a feeder with a material capacity detection function is arranged at an inlet of the 3D printing equipment, and when the material capacity is detected to be lower than the lowest position, a signal is sent to control the double mixing pumps to increase or decrease the pumping speed.
4. The printing construction method of building 3D printing automatic feeding based on double mixing pump according to claim 1, wherein the automatic control system controls the 3D printing device and the double mixing pump through a remote control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310582965.5A CN116816092A (en) | 2023-05-23 | 2023-05-23 | Printing construction method for building 3D printing automatic feeding based on double mixing pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310582965.5A CN116816092A (en) | 2023-05-23 | 2023-05-23 | Printing construction method for building 3D printing automatic feeding based on double mixing pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816092A true CN116816092A (en) | 2023-09-29 |
Family
ID=88111810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310582965.5A Pending CN116816092A (en) | 2023-05-23 | 2023-05-23 | Printing construction method for building 3D printing automatic feeding based on double mixing pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116816092A (en) |
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2023
- 2023-05-23 CN CN202310582965.5A patent/CN116816092A/en active Pending
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