CN115042295A - 3D printing concrete state adjusting extrusion system and control method thereof - Google Patents
3D printing concrete state adjusting extrusion system and control method thereof Download PDFInfo
- Publication number
- CN115042295A CN115042295A CN202210697155.XA CN202210697155A CN115042295A CN 115042295 A CN115042295 A CN 115042295A CN 202210697155 A CN202210697155 A CN 202210697155A CN 115042295 A CN115042295 A CN 115042295A
- Authority
- CN
- China
- Prior art keywords
- low
- temperature
- storage hopper
- feeding pipe
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- 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
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
-
- 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
- B28C5/46—Arrangements for applying super- or sub-atmospheric pressure during mixing; Arrangements for cooling or heating during mixing, e.g. by introducing vapour
- B28C5/468—Cooling, e.g. using ice
-
- 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
- B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
-
- 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
- B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
- B28C7/162—Discharge means, e.g. with intermediate storage of fresh concrete by means of conveyors, other than those comprising skips or containers, e.g. endless belts, screws, air under pressure
- B28C7/167—Discharge means, e.g. with intermediate storage of fresh concrete by means of conveyors, other than those comprising skips or containers, e.g. endless belts, screws, air under pressure by means of a screw conveyor
-
- 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
Abstract
The invention discloses a 3D printing concrete state adjusting extrusion system and a control method thereof. The 3D printing concrete state adjusting extrusion system comprises a cooling extrusion device and a heating conveying device, wherein the cooling extrusion device comprises a low-temperature storage hopper, a stirring shaft and an extrusion shaft, the upper part of the stirring shaft is connected with a driving mechanism, the lower part of the stirring shaft is connected with the extrusion shaft, the tail part of the extrusion shaft is arranged at an outlet of the low-temperature storage hopper in a penetrating manner, and the low-temperature storage hopper is provided with a cooling mechanism for cooling the concrete inside the low-temperature storage hopper; the heating and conveying device comprises a feeding pipe communicated with the outlet of the low-temperature storage hopper and a nozzle located at the tail end of the feeding pipe, and a heating mechanism for heating concrete in the feeding pipe is installed on the feeding pipe. This extrusion system is adjusted to 3D printing concrete state, steerable stirred tank maintain low temperature environment to the flow property of maintaining the concrete is stable, has reduced the mobility of discharge gate concrete through heating conveying pipe in addition, has guaranteed that 3D prints the appearance of concrete stable.
Description
Technical Field
The invention relates to the technical field of concrete 3D printing, in particular to a 3D printing concrete state adjusting extrusion system and a control method thereof.
Background
As a new building additive manufacturing technology, 3D printed concrete has strict requirements on the rheological property of fresh concrete. Before printing, the concrete should maintain high fluidity and low hardening rate to reduce pumping pressure and reduce the risk of clogging. However, after extrusion of the concrete, the yield stress of the deposited material should be high enough to support its own weight and the increasing pressure of the upper layer. Moreover, due to continuous hydration of cement, rheological property of cement-based materials can change along with time, so that challenges are brought to design of mix proportion of printable concrete, and usually, when 3D printing is performed on concrete, the mix proportion needs to be continuously adjusted and tested, so that the working efficiency is reduced.
The ambient temperature can affect the working state of the concrete by affecting the speed of chemical reactions in the concrete and the adsorption effect of the additives in the concrete. Under the low temperature environment, the chemical reaction speed is low, the adsorption effect of the admixture on cement particles is stable, and the concrete can keep the working state for a long time. When the environmental temperature rises, the chemical reaction speed is accelerated, the adsorption capacity of the admixture to cement particles is weakened, the admixture is easy to hydrolyze, and the fluidity of the concrete is reduced.
Disclosure of Invention
The invention mainly aims to provide a 3D printing concrete state adjusting extrusion system and a control method thereof, aiming at controlling the low-temperature environment in a stirring container to maintain the stable flowing property of concrete and simultaneously reducing the flowing property of the concrete at a discharge port by heating a feeding pipe.
In order to achieve the above purpose, the invention provides a 3D printing concrete state adjusting extrusion system, which comprises a cooling extrusion device and a heating delivery device, wherein,
the cooling extrusion device comprises a low-temperature storage hopper, a stirring shaft and an extrusion shaft, wherein the stirring shaft and the extrusion shaft are positioned in the low-temperature storage hopper;
the heating and conveying device comprises a feeding pipe communicated with the outlet of the low-temperature storage hopper and a nozzle positioned at the tail end of the feeding pipe, and a heating mechanism for heating concrete in the feeding pipe is installed on the feeding pipe.
Preferably, the blades on the extrusion shaft are threaded extrusion blades, the driving mechanism is a motor, and the stirring shaft is fixedly connected with an output shaft of the motor through a shaft sleeve.
Preferably, the inside cavity intermediate layer of having seted up of low temperature storage hopper, cooling mechanism is including installing the semiconductor refrigeration piece in low temperature storage hopper cavity intermediate layer, and the refrigeration face of semiconductor refrigeration piece sets up towards the inside wall of low temperature storage hopper.
Preferably, a water inlet and a water outlet which are communicated with the hollow interlayer of the low-temperature storage hopper are formed in the low-temperature storage hopper.
Preferably, the feeding pipe is provided with an interlayer for introducing a heating liquid, and a water filling port and an outlet which are communicated with the interlayer, the heating mechanism comprises a water storage tank for storing cooling liquid and a water pump accommodated in the water storage tank, an inlet of the water storage tank is communicated with the outlet of the feeding pipe through a pipeline, the water pump in the water storage tank is communicated with a water inlet of the low-temperature storage hopper through a pipeline, and a water outlet of the low-temperature storage hopper is communicated with the water filling port of the feeding pipe through a pipeline.
Preferably, the feeding pipe is provided with at least two outlets, the interlayers of the feeding pipe are provided with multiple sections, a valve is arranged on a partition plate between every two adjacent interlayers to control the communication between the adjacent interlayers, and the inlet of the water storage tank is selectively communicated with one outlet of the feeding pipe to adjust the heating position of the feeding pipe.
Preferably, the device further comprises a control device electrically connected with the temperature reduction mechanism and the heating mechanism.
Preferably, the control device comprises a control main board, and a relay and a water pump controller which are electrically connected with the control main board, wherein the water pump controller is electrically connected with the water pump, and the relay is electrically connected with the semiconductor refrigeration piece.
Preferably, the control device further comprises a first temperature sensor and a second temperature sensor which are electrically connected with the control main board, the first temperature sensor is installed on the inner wall of the low-temperature storage hopper, and the second temperature sensor is installed on the inner wall of the tail end of the feeding pipe.
The invention further provides a control method for adjusting the extrusion system based on the 3D printing concrete state, which comprises the following steps:
starting a control device, setting the temperature of an inner cavity of a low-temperature storage hopper within a first preset range, and setting the temperature of a nozzle of a heating and conveying device within a second preset range;
the water pump and the semiconductor refrigerating sheet are controlled to run by the control main board, the temperature in the low-temperature storage hopper begins to decrease, and the heating mechanism drives the temperature of an interlayer in the feeding pipe to rise;
when the temperature of the inner cavity of the low-temperature storage hopper reaches a first preset range, pouring concrete into the low-temperature storage hopper, starting a driving mechanism to work to drive a stirring shaft to stir, and rotating an extrusion shaft so as to extrude the concrete to a printing platform through a nozzle;
the control mainboard collects data of the temperature sensor in real time, and adjusts the operating power of the water pump and the semiconductor refrigerating sheet according to the set temperature to keep the temperature of the system stable.
The 3D printing concrete state adjusting and extruding system provided by the invention has the following beneficial effects:
(1) through set up cooling mechanism on low temperature storage hopper 5, the adsorption capacity of water-reducing agent on cementitious material particle surface increases in the concrete under low temperature environment (5 ~ 10 ℃), and the mobility of concrete improves, and mixture gas pocket quantity reduces, and the closely knit degree and the intensity of concrete promote. The evaporation rate of water in the concrete and the chemical reaction speed are reduced in a low-temperature environment, the loss of the fluidity of the concrete is reduced, and the extrusion shaft 4 is ensured to extrude the concrete continuously and stably;
(2) the heating mechanism for heating the concrete in the feeding pipe 9 is arranged on the feeding pipe 9, and the power of the heating mechanism is controlled, so that the flowability of the concrete at the nozzle 24 can be adjusted, the plasticity of the concrete on the printing platform is ensured, and the apparent quality of the printed concrete is improved;
(3) according to the 3D printing concrete state adjusting extrusion system, the semiconductor refrigeration sheet 6 is simultaneously used as a cold source and a heat source through the circulating water device, and the system automatically adjusts the operation efficiency in real time according to the set temperature, so that the function of adjusting the working state of concrete is achieved, the printing requirements of concrete in different states are better adapted, and the working efficiency of 3D printing of concrete is increased;
(4) this extrusion system is adjusted to 3D printing concrete state has simple structure, reliable operation and the advantage of easy realization.
Drawings
FIG. 1 is a schematic diagram of a 3D printed concrete conditioning extrusion system according to the present invention;
FIG. 2 is a schematic structural diagram of a cooling extrusion device in the 3D printing concrete state adjusting extrusion system of the invention;
FIG. 3 is a schematic structural diagram of a heating and conveying device in a 3D printing concrete state adjusting extrusion system according to the invention;
FIG. 4 is a schematic flow chart of the operation of the 3D printing concrete state adjustment extrusion system of the present invention;
FIG. 5 is a schematic flow chart of a control method of a 3D printing concrete state adjusting extrusion system according to the invention.
In the figure: 1-a motor; 2-shaft sleeve; 3-stirring shaft; 4-extruding the shaft; 5-low temperature storage hopper; 6-semiconductor refrigerating sheet; 7-a water inlet; 8-a water outlet; 9-a feeding pipe; 10-a fourth outlet; 11-a third outlet; 12-a second outlet; 13-a first outlet; 14-a water injection port; 15-a first valve; 16-a second valve; 17-a third valve; 18-a first water pipe; 19-a second water pipe; 20-a third water pipe; 21-a water storage tank; 22-inlet of the storage tank 21; 23-a water pump; 24-a nozzle; 25-a first temperature sensor; 26-a second temperature sensor; 27-a control main board; 28-a relay; 29-Water Pump controller 29.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides a 3D printing concrete state adjusting and extruding system.
Referring to fig. 1 to 3, in the preferred embodiment, a 3D printing concrete condition adjusting extrusion system comprises a cooling extrusion device and a heating feeding device, wherein,
the cooling extrusion device comprises a low-temperature storage hopper 5, a stirring shaft 3 and an extrusion shaft 4 which are positioned in the low-temperature storage hopper 5, wherein the upper part of the stirring shaft 3 is connected with a driving mechanism, the lower part of the stirring shaft 3 is connected with the extrusion shaft 4, the tail part of the extrusion shaft 4 is arranged at an outlet of the low-temperature storage hopper 5 in a penetrating manner, and a cooling mechanism for cooling the concrete in the low-temperature storage hopper 5 is arranged on the low-temperature storage hopper 5;
the heating and conveying device comprises a feeding pipe 9 communicated with the outlet of the low-temperature storage hopper 5 and a nozzle 24 positioned at the tail end of the feeding pipe 9, and a heating mechanism for heating concrete in the feeding pipe 9 is installed on the feeding pipe 9.
Specifically, in this embodiment, the blades on the extruding shaft 4 are screw extruding blades, the driving mechanism is the motor 1, and the stirring shaft 3 is fixedly connected with the output shaft of the motor 1 through the shaft sleeve 2.
Referring to fig. 1 and fig. 2, the present embodiment provides a specific implementation manner of the cooling mechanism: the inside cavity intermediate layer of having seted up of low temperature storage hopper 5, cooling mechanism is including installing semiconductor refrigeration piece 6 in low temperature storage hopper 5 cavity intermediate layer, and the refrigeration face of semiconductor refrigeration piece 6 sets up towards the hopper inside wall of low temperature storage hopper 5. After the semiconductor refrigerating sheet 6 is electrified, the temperature difference between the refrigerating surface and the radiating surface can reach 60 ℃, and the semiconductor refrigerating sheet 6 is small in size and easy to assemble. A plurality of semiconductor refrigeration pieces 6 are arranged on the inner side of the low-temperature storage hopper 5.
The low-temperature storage hopper 5 is provided with a water inlet 7 and a water outlet 8 which are communicated with the hollow interlayer. The water inlet 7 is positioned below the water outlet 8, and the water inlet 7 and the water outlet 8 are respectively positioned on the outer side walls of the left side and the right side of the low-temperature storage hopper 5.
With reference to fig. 1 and 3, the present embodiment provides a specific implementation manner of the heating mechanism: the last water filling port 14 and the export that is used for letting in the intermediate layer of heating liquid and communicates with the intermediate layer that is provided with of conveying pipe 9, heating mechanism is including the storage water tank 21 that is used for storing the coolant liquid and hold the water pump 23 in storage water tank 21, the entry 22 of storage water tank 21 passes through the pipeline and communicates with the export of conveying pipe 9, water pump 23 in storage water tank 21 passes through the pipeline and communicates with the water inlet 7 of low temperature storage hopper 5, the delivery port 8 of low temperature storage hopper 5 passes through pipeline and conveying pipe 9's water filling port 14 intercommunication. The feeding pipe 9 is a hose, and an interlayer is arranged outside the hose. The nozzle 24 is connected with the feeding pipe 9 (9), and the nozzles 24 with different inner diameters can be replaced according to different requirements.
Referring to fig. 1 and 3, at least two outlets are provided on the feeding pipe 9, the interlayers of the feeding pipe 9 are provided with multiple sections, a valve is installed on a partition plate between each section of interlayer to control the communication between adjacent interlayers, and an inlet 22 of the water storage tank 21 is selectively communicated with one outlet of the feeding pipe 9 to adjust the heating position of the feeding pipe 9. In this embodiment, it is illustrated that the interlayer of the feeding pipe 9 is provided with four sections, at this time, three valves (a first valve 15, a second valve 16, and a third valve 17) are respectively arranged between the four sections of interlayer, a first outlet 13, a second outlet 12, a third outlet 11, and a fourth outlet 10 are respectively arranged in each section of interlayer, and a water filling port 14 is arranged at a position close to the nozzle 24. The purpose of adjusting the heating position and time can be achieved by switching the outlet connected with the third water pipe (selectively connecting with one of the first outlet 13, the second outlet 12, the third outlet 11 and the fourth outlet 10).
Referring to fig. 1, further, the 3D printing concrete state adjusting extrusion system further includes a control device electrically connected to the cooling mechanism and the heating mechanism, so as to achieve automatic adjustment of temperature.
Specifically, in the present embodiment, the control device includes a control main board 27, and a relay 28 and a water pump controller 29 electrically connected thereto, the water pump controller 29 is electrically connected to the water pump 23, and the relay 28 is electrically connected to the semiconductor cooling plate 6. The input end of the relay 28 is connected with 220v alternating current, the signal end is connected with the control mainboard 27, and the output end is connected with the semiconductor refrigerating sheet 6. The input end of the water pump controller 29 is connected with 220v alternating current, the signal end is connected with the control main board 27, and the output end is connected with the water pump 23.
The control device further comprises a first temperature sensor 25 and a second temperature sensor 26 which are electrically connected with the control main board 27, wherein the first temperature sensor 25 is installed on the inner wall of the low-temperature storage hopper 5, and the second temperature sensor 26 is installed on the inner wall of the tail end of the feeding pipe 9. The first temperature sensor 25 and the second temperature sensor 26 are both patch type temperature sensors.
The control main board 27 is used for receiving signals of the first temperature sensor 25 and the second temperature sensor 26. The control mainboard 27 controls the relay 28 through the output signal to control the power of the semiconductor chilling plate 6, and further controls the temperature of the concrete in the low-temperature storage hopper 5. The control mainboard 27 controls the speed of the water pump 23 through output signals, controls the temperature of the cooling liquid, and further controls the temperature of the concrete in the nozzle 24.
Referring to fig. 4 (in fig. 4, the first temperature sensor 25 and the second temperature sensor 26 are both the first temperature sensor and the second temperature sensor), the concrete state adjusting extrusion system for 3D printing has the following specific working process.
1, starting a control device, setting the temperature of an inner cavity of a low-temperature storage hopper 5 within a first preset range (such as 5-10 ℃), and heating a nozzle 24 of a material conveying device within a second preset temperature range (such as 50-60 ℃);
2, the water pump 23 and the semiconductor refrigerating sheet 6 are controlled to operate by the control mainboard 27, the temperature in the low-temperature storage hopper 5 begins to decrease, and the heating mechanism drives the temperature of an interlayer in the feeding pipe 9 to rise;
3, when the temperature of the inner cavity of the low-temperature storage hopper 5 reaches a first preset range, pouring concrete into the low-temperature storage hopper 5, starting the driving mechanism to work to drive the stirring shaft 3 to stir, and rotating the extrusion shaft 4 to extrude the concrete to the printing platform;
and 4, the control main board 27 collects data of the temperature sensor in real time, and adjusts the running power of the water pump 23 and the semiconductor refrigerating sheet 6 according to the set temperature to keep the temperature of the system stable.
The 3D printing concrete state adjusting extrusion system provided by the invention has the following beneficial effects:
(1) through set up cooling mechanism on low temperature storage hopper 5, the adsorption capacity of water-reducing agent on cementitious material particle surface increases in the concrete under low temperature environment (5 ~ 10 ℃), and the mobility of concrete improves, and mixture gas pocket quantity reduces, and the closely knit degree and the intensity of concrete promote. The evaporation rate of water in the concrete and the chemical reaction speed are reduced in a low-temperature environment, the loss of the fluidity of the concrete is reduced, and the extrusion shaft 4 is ensured to extrude the concrete continuously and stably;
(2) the heating mechanism for heating the concrete in the feeding pipe 9 is arranged on the feeding pipe 9, and the power of the heating mechanism is controlled, so that the flowability of the concrete at the nozzle 24 can be adjusted, the plasticity of the concrete on the printing platform is ensured, and the apparent quality of the printed concrete is improved;
(3) according to the 3D printing concrete state adjusting extrusion system, the semiconductor refrigeration sheet 6 is simultaneously used as a cold source and a heat source through the circulating water device, and the system automatically adjusts the operation efficiency in real time according to the set temperature, so that the function of adjusting the working state of concrete is achieved, the printing requirements of concrete in different states are better adapted, and the working efficiency of 3D printing of concrete is increased;
(4) this extrusion system is adjusted to 3D printing concrete state has simple structure, reliable operation and the advantage of easy realization.
The invention further provides a control method of the 3D printing concrete state adjusting extrusion system.
In this preferred embodiment, a control method for adjusting an extrusion system based on the state of the 3D printed concrete includes the following steps:
step S10, starting a control device, setting the temperature of the inner cavity of the low-temperature storage hopper 5 within a first preset range, and setting the temperature of the nozzle 24 of the heating and conveying device within a second preset range;
step S20, the water pump 23 and the semiconductor refrigerating sheet 6 are controlled to operate by the control main board 27, the temperature in the low-temperature storage hopper 5 begins to decrease, and the heating mechanism drives the temperature of the interlayer in the feeding pipe 9 to increase;
step S30, when the temperature of the inner cavity of the low-temperature storage hopper 5 reaches a first preset range, pouring concrete into the low-temperature storage hopper 5, starting the driving mechanism to work to drive the stirring shaft 3 to stir, and enabling the extrusion shaft 4 to rotate so as to extrude the concrete to the printing platform through the nozzle;
step S40, the control main board 27 collects data of the temperature sensors (including the first temperature sensor 25 and the second temperature sensor 26) in real time, and adjusts the operating power of the water pump 23 and the semiconductor cooling plate 6 according to the set temperature to keep the temperature of the system stable.
According to the control method provided by the invention, the data of the temperature sensor are collected in real time, the operating power of the water pump 23 and the semiconductor refrigerating sheet 6 is adjusted according to the set temperature, the temperature of the system is kept stable, and the control temperature is stable and reliable.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.
Claims (10)
1. A3D printing concrete state adjusting extrusion system is characterized by comprising a cooling extrusion device and a heating conveying device, wherein,
the cooling extrusion device comprises a low-temperature storage hopper, a stirring shaft and an extrusion shaft, wherein the stirring shaft and the extrusion shaft are positioned in the low-temperature storage hopper;
the heating and conveying device comprises a feeding pipe communicated with the outlet of the low-temperature storage hopper and a nozzle positioned at the tail end of the feeding pipe, and a heating mechanism for heating concrete in the feeding pipe is installed on the feeding pipe.
2. The 3D printed concrete condition adjusting extrusion system of claim 1, wherein the blades on the extrusion shaft are threaded extrusion blades, the driving mechanism is a motor, and the stirring shaft is fixedly connected with an output shaft of the motor through a shaft sleeve.
3. The 3D printing concrete state adjusting extrusion system as claimed in claim 1 or 2, wherein a hollow interlayer is arranged inside the low-temperature storage hopper, the cooling mechanism comprises a semiconductor refrigeration piece arranged in the hollow interlayer of the low-temperature storage hopper, and a refrigeration surface of the semiconductor refrigeration piece is arranged towards the inner side wall of the low-temperature storage hopper.
4. The 3D printed concrete state adjusting extrusion system of claim 3, wherein the low-temperature storage hopper is provided with a water inlet and a water outlet which are communicated with the hollow interlayer.
5. The 3D printing concrete state adjusting extrusion system according to claim 4, wherein the feeding pipe is provided with an interlayer for introducing a heating liquid, a water injection port and an outlet which are communicated with the interlayer, the heating mechanism comprises a water storage tank for storing a cooling liquid and a water pump accommodated in the water storage tank, an inlet of the water storage tank is communicated with the outlet of the feeding pipe through a pipeline, the water pump in the water storage tank is communicated with a water inlet of the low-temperature storage hopper through a pipeline, and a water outlet of the low-temperature storage hopper is communicated with the water injection port of the feeding pipe through a pipeline.
6. The 3D printed concrete condition adjusting extrusion system of claim 5, wherein the feeding pipe is provided with at least two outlets, the interlayers of the feeding pipe are provided with a plurality of sections, a valve is installed on a partition plate between each section of interlayer to control the communication between the adjacent interlayers, and an inlet of the water storage tank is selectively communicated with one outlet of the feeding pipe to adjust the heating position of the feeding pipe.
7. The 3D printed concrete condition adjusting extrusion system of claim 5, further comprising a control device electrically connected to the cooling mechanism and the heating mechanism.
8. The 3D printing concrete condition adjusting extrusion system of claim 7, wherein the control device comprises a control mainboard, and a relay and a water pump controller which are electrically connected with the control mainboard, wherein the water pump controller is electrically connected with the water pump, and the relay is electrically connected with the semiconductor refrigeration piece.
9. The 3D printed concrete condition adjusting extrusion system of claim 8, wherein the control device further comprises a first temperature sensor and a second temperature sensor electrically connected with the control mainboard, the first temperature sensor is mounted on the inner wall of the low temperature storage hopper, and the second temperature sensor is mounted on the inner wall of the tail end of the feeding pipe.
10. A control method for a 3D printing concrete state adjustment extrusion system based on any one of claims 7 to 9, characterized by comprising the following steps:
starting a control device, setting the temperature of an inner cavity of a low-temperature storage hopper within a first preset range, and setting the temperature of a nozzle of a heating and conveying device within a second preset range;
the water pump and the semiconductor refrigerating sheet are controlled to run by the control main board, the temperature in the low-temperature storage hopper begins to decrease, and the heating mechanism drives the temperature of an interlayer in the feeding pipe to rise;
when the temperature of the inner cavity of the low-temperature storage hopper reaches a first preset range, pouring concrete into the low-temperature storage hopper, starting a driving mechanism to work to drive a stirring shaft to stir, and rotating an extrusion shaft so as to extrude the concrete to a printing platform through a nozzle;
the control mainboard collects data of the temperature sensor in real time, and adjusts the operating power of the water pump and the semiconductor refrigerating sheet according to the set temperature to keep the temperature of the system stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210697155.XA CN115042295A (en) | 2022-06-20 | 2022-06-20 | 3D printing concrete state adjusting extrusion system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210697155.XA CN115042295A (en) | 2022-06-20 | 2022-06-20 | 3D printing concrete state adjusting extrusion system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115042295A true CN115042295A (en) | 2022-09-13 |
Family
ID=83164381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210697155.XA Pending CN115042295A (en) | 2022-06-20 | 2022-06-20 | 3D printing concrete state adjusting extrusion system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115042295A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205631380U (en) * | 2015-10-29 | 2016-10-12 | 朱友爱 | 3D printer the whole structure |
| CN205685755U (en) * | 2016-06-17 | 2016-11-16 | 王子达 | The 3D printer hott bed of thermoelectric heat pump |
| WO2017108003A1 (en) * | 2015-12-25 | 2017-06-29 | 杜崇铭 | Smart 3d rapid moulding material plasticising double filament production system |
| CN206953601U (en) * | 2017-07-20 | 2018-02-02 | 陕西阿拉丁机器人科技有限公司 | The 3D printer hardware controller of support industry manufacture mould production |
| CN208068884U (en) * | 2018-04-20 | 2018-11-09 | 合肥快科智能科技有限公司 | A kind of 3D printer with semiconductor cooling structure |
| CN208376021U (en) * | 2018-04-23 | 2019-01-15 | 广州迈普再生医学科技股份有限公司 | A kind of ultralow temperature print platform of biology 3D printer |
| RU2018107985A (en) * | 2018-03-05 | 2019-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет технологий и управления имени К.Г. Разумовского (ПКУ)" | 3D printer high speed printhead with 3D color printing |
| CN111976129A (en) * | 2020-08-27 | 2020-11-24 | 佘峰 | Quick radiating 3D beats printer head |
| CN212129984U (en) * | 2020-02-11 | 2020-12-11 | 华润电力投资有限公司北方分公司 | Concrete structure cooling system |
| CN215038953U (en) * | 2021-06-04 | 2021-12-07 | 南通翰坤建筑材料有限公司 | Powder heat sink of precast concrete mixing plant |
| CN215568522U (en) * | 2021-06-29 | 2022-01-18 | 四川爱德中创建设工程有限公司 | Conveying pipeline for concrete construction in winter |
| KR102388709B1 (en) * | 2021-12-02 | 2022-04-20 | 한국건설기술연구원 | Three Dimensional Printing Apparatus and Nozzle Module with Induction Heating of 3D Cement Composition |
| WO2022096061A1 (en) * | 2020-11-06 | 2022-05-12 | Ernst-Abbe-Hochschule Jena | Glass extrusion assembly and glass extrusion method for the direct manufacturing of compact, three-dimensional and geometrically defined semifinished products and components made of glass |
-
2022
- 2022-06-20 CN CN202210697155.XA patent/CN115042295A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205631380U (en) * | 2015-10-29 | 2016-10-12 | 朱友爱 | 3D printer the whole structure |
| WO2017108003A1 (en) * | 2015-12-25 | 2017-06-29 | 杜崇铭 | Smart 3d rapid moulding material plasticising double filament production system |
| CN205685755U (en) * | 2016-06-17 | 2016-11-16 | 王子达 | The 3D printer hott bed of thermoelectric heat pump |
| CN206953601U (en) * | 2017-07-20 | 2018-02-02 | 陕西阿拉丁机器人科技有限公司 | The 3D printer hardware controller of support industry manufacture mould production |
| RU2018107985A (en) * | 2018-03-05 | 2019-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет технологий и управления имени К.Г. Разумовского (ПКУ)" | 3D printer high speed printhead with 3D color printing |
| CN208068884U (en) * | 2018-04-20 | 2018-11-09 | 合肥快科智能科技有限公司 | A kind of 3D printer with semiconductor cooling structure |
| CN208376021U (en) * | 2018-04-23 | 2019-01-15 | 广州迈普再生医学科技股份有限公司 | A kind of ultralow temperature print platform of biology 3D printer |
| CN212129984U (en) * | 2020-02-11 | 2020-12-11 | 华润电力投资有限公司北方分公司 | Concrete structure cooling system |
| CN111976129A (en) * | 2020-08-27 | 2020-11-24 | 佘峰 | Quick radiating 3D beats printer head |
| WO2022096061A1 (en) * | 2020-11-06 | 2022-05-12 | Ernst-Abbe-Hochschule Jena | Glass extrusion assembly and glass extrusion method for the direct manufacturing of compact, three-dimensional and geometrically defined semifinished products and components made of glass |
| CN215038953U (en) * | 2021-06-04 | 2021-12-07 | 南通翰坤建筑材料有限公司 | Powder heat sink of precast concrete mixing plant |
| CN215568522U (en) * | 2021-06-29 | 2022-01-18 | 四川爱德中创建设工程有限公司 | Conveying pipeline for concrete construction in winter |
| KR102388709B1 (en) * | 2021-12-02 | 2022-04-20 | 한국건설기술연구원 | Three Dimensional Printing Apparatus and Nozzle Module with Induction Heating of 3D Cement Composition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111300640A (en) | Integrated pulping equipment | |
| CN216585007U (en) | Ecological fodder fermenting installation of benefit fungus | |
| CN115042295A (en) | 3D printing concrete state adjusting extrusion system and control method thereof | |
| CN213953578U (en) | Integrated water supply and liquid distribution equipment | |
| EP4005762A1 (en) | An automated mixing apparatus for the production of cement mortars and foam concrete | |
| CN212123705U (en) | Integrated pulping equipment | |
| CN211227965U (en) | Asphalt concrete foaming warm mixing device | |
| CN113858431A (en) | Double-shaft double-cylinder pulping device | |
| CN210766253U (en) | Emulsified asphalt preparation facilities of accurate temperature control | |
| CN211514112U (en) | Automatic acid adding device for refractory material | |
| CN210079513U (en) | Water reducing agent reation kettle | |
| CN210385836U (en) | Full-automatic car urea production system | |
| CN108114679B (en) | Magnetization reaction system for aliphatic sulfonate water reducer | |
| CN113083124A (en) | Reaction unit is used in production of slow setting superplasticizer | |
| CN207373421U (en) | A kind of cement foamed board assembly line of segmented batch mixing | |
| CN215051799U (en) | Warm mix asphalt foaming device | |
| CN219006537U (en) | Concrete mixing device of controllable temperature | |
| CN218901492U (en) | Efficient stirring formula refining equipment | |
| CN220219113U (en) | High-efficient cement foaming agent filling device | |
| CN209207859U (en) | A kind of direct-buried thermal insulation pipe polyurethane foam insulation layer foaming machine | |
| CN210964699U (en) | Automatic change fodder agitating unit | |
| CN221249339U (en) | Recycled concrete agitating unit | |
| CN219150089U (en) | Controllable temperature water reducing agent synthesizer | |
| CN220610011U (en) | Batching jar that can even compounding | |
| CN212855732U (en) | Water-reducing agent reation kettle of stirring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |