3D printed structure of the inner reinforced wall

Abstract

The printing structure of the 3D printed inner-recessed reinforced cloth wall of the present invention comprises: a barrel, a first driving motor is installed on the upper part of the barrel, an extrusion-type spiral blade is installed in the barrel, the driving end of the driving motor is transmission-connected to the input end of the extrusion-type spiral blade, a concrete printing head symmetrically arranged in the horizontal direction with a discharge port located at the bottom of the barrel; a reinforced cloth introduction mechanism, the reinforced cloth introduction mechanism is arranged on the front side of the barrel, the reinforced cloth introduction mechanism comprises a reinforced cloth unwinding mechanism for unwinding the reinforced cloth, and a reinforced cloth conveying mechanism for conveying the reinforced cloth to the rear side of the symmetrically arranged concrete printing head. The present invention provides a printing structure of the 3D printed inner-recessed reinforced cloth wall, in which a reinforced cloth formed by transverse filamentary ribs pressed and bonded on a mesh is added to the 3D printed concrete, and at the same time, the transverse filamentary ribs facilitate the continuous overlap of the upper and lower layers, so that the reinforced cloth forms a whole piece in the concrete to resist the impact of the wall.

Description

Technical Field

[0001] The invention relates to the field of 3D printing architecture, and in particular to a printing structure of a 3D printed recessed reinforcement cloth wall. Background Art

[0002] 3D printing construction technology is an advanced rapid prototyping technology and an emerging technology in digital construction technology. Through the powerful graphics processing capabilities of computers, the designed building model is transformed into several printing layers, and the building materials are printed layer by layer through printing equipment to form a solid three-dimensional building. It has the advantages of high construction efficiency, cost savings, and green environmental protection.

[0003] Since building materials are laid layer by layer during the printing process, the bonding force between layers is relatively weak, which limits the strength of the printed buildings. Currently, the walls of 3D printed houses are mostly plain concrete. Although they have certain compressive strength, they are brittle and will suffer brittle failure when subjected to impact loads.

[0004] The Chinese patent "CN201810908507-An integrated construction device and method for 3D printed FRP reinforced concrete structure" adds transverse filaments to the plain concrete, which makes the wall have a certain toughness, but horizontal fractures will still occur. Summary of the invention

[0005] The present invention provides a printing structure of a 3D printed recessed reinforcement cloth wall, wherein a reinforcement cloth formed by transverse fine filaments pressed and bonded on a mesh cloth is added to the 3D printed concrete, and the transverse fine filaments facilitate the continuous overlap of the upper and lower layers, so that the reinforcement cloth forms a whole in the concrete to resist the impact of the wall.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention discloses

[0008] The printing structure of the 3D printed inner reinforced cloth wall includes:

[0009] A barrel, wherein a first driving motor is installed on the upper part of the barrel, an extrusion-type spiral blade is installed in the barrel, a driving end of the driving motor is transmission-connected to an input end of the extrusion-type spiral blade, and a concrete printing head is symmetrically arranged in a horizontal direction with a discharge port at the bottom of the barrel;

[0010] The reinforcement cloth introduction mechanism is arranged at the front side of the barrel, and the reinforcement cloth introduction mechanism includes a reinforcement cloth unwinding mechanism for unwinding the reinforcement cloth, and a reinforcement cloth conveying mechanism for conveying the reinforcement cloth to the rear side of the symmetrically arranged concrete printing head.

[0011] Furthermore, the reinforcement cloth unwinding mechanism includes a fixed plate, which is fixed to the front side of the barrel, and a reinforcement cloth installation roller and a reinforcement cloth changing roller group are provided on one side of the fixed plate. A second drive motor is installed on the other side of the fixed plate, and the output end of the second drive motor is transmission-connected to the input end of the reinforcement cloth installation roller. The reinforcement cloth changing roller group is used to flip the reinforcement cloth released by the reinforcement cloth installation roller into a vertical position, and then the reinforcement cloth is transmitted from between the concrete printing heads to the rear side of the barrel by the reinforcement cloth transmission mechanism.

[0012] Furthermore, an arc-shaped spring sheet is fixedly connected to the fixed plate, and a free end of the arc-shaped spring sheet is pressed onto the reinforcement cloth roll installed on the reinforcement cloth installation roller.

[0013] Furthermore, the reinforcement cloth changing roller group includes a first transition roller arranged in sequence from top to bottom, the rotation direction of which is consistent with the reinforcement cloth installation roller, a first steering roller that forms a horizontal angle of 45° with the fixed plate, a second steering roller arranged parallel to the fixed plate, and a third steering roller that forms a vertical angle of 45° with the fixed plate. A second transition roller and a third transition roller are also arranged in a vertical direction below the fixed plate.

[0014] Furthermore, the reinforcement cloth conveying mechanism includes a rodless cylinder, a finger cylinder is fixedly connected to the slider of the rodless cylinder, one end of the rodless cylinder is fixedly connected to the fixed plate, and the other end passes through the top of the concrete printing head to the rear side of the barrel, and the finger cylinder is used to clamp the reinforcement cloth and drive the reinforcement cloth from the front side of the barrel to the rear side of the barrel.

[0015] Furthermore, a reinforcement cloth cutting mechanism is provided below the reinforcement cloth conveying mechanism, the reinforcement cloth cutting mechanism is located at the front side of the concrete printing head and behind the initial position of the finger cylinder, and is fixedly connected to the concrete printing head, the reinforcement cloth cutting mechanism comprises a first clamping cylinder and a second clamping cylinder respectively arranged on both sides of the reinforcement cloth, a blade is provided at the end of the guide rod of the first clamping cylinder, and a cutting groove matching the blade is provided at the end of the guide rod of the second clamping cylinder.

[0016] Furthermore, a flat plate is provided above the concrete print head outlet, a channel for the reinforcement cloth to pass through is provided in the middle of the flat plate, and a plug plate for closing the concrete print head outlet is provided at the rear side of the concrete print head, and the tail end of the plug plate is fixedly connected to the end of the telescopic rod of the closing cylinder.

[0017] Furthermore, a baffle is provided at the rear side of the concrete printing head, and the length of the baffle is greater than the length from the concrete printing head to the end of the closed cylinder.

[0018] Furthermore, a guide plate arranged in an eight-shaped shape is fixedly connected to the flat plate located at the front side of the channel.

[0019] The beneficial effects achieved by the present invention are:

[0020] By arranging concrete printing heads symmetrically arranged in the horizontal direction of the discharge port, the reinforcement cloth passing through the center line of the two printing heads is buried in the wall, thereby improving the tear resistance of the wall in the horizontal direction.

[0021] The rib cloth unwinding mechanism is connected to the barrel through a fixed plate, and the rib cloth installation roller is driven by a second drive motor to unwind the rib cloth roll, ensuring that the rib cloth unwinding speed is consistent with the printing speed, thereby improving the stability during printing.

[0022] The problem of the reinforcement cloth roll being spread out during use can be avoided by arranging an arc-shaped spring sheet to compress the reinforcement cloth roll.

[0023] The reinforcement cloth is turned from a direction perpendicular to the fixed plate to a direction parallel to the fixed plate by the reinforcement cloth changing roller group, and is simultaneously transmitted in a horizontal direction, so that the reinforcement cloth is placed between the concrete printing heads, thereby improving the strength of the wall during 3D printing.

[0024] The reinforcement cloth is conveyed from the front side of the barrel to the rear side of the barrel through the reinforcement cloth conveying mechanism, so that the reinforcement cloth is pre-placed before printing, so that when printing and placing concrete, there is always reinforcement cloth in the wall.

[0025] By setting the cooperation between the blade and the cutting groove, it is convenient to cut the reinforcement cloth at the window, door and other positions without manual operation.

[0026] By setting a flat plate on the discharge port of the concrete printing head, it is possible to avoid bulging of the discharge port when the concrete is extruded during printing on both sides. At the same time, a plug plate is set to close the discharge port to prevent concrete from leaking out.

[0027] By setting the baffle, it is possible to prevent the concrete from affecting the operation of the closed cylinder and prevent the outer edge of the wall from being excessively convex.

[0028] By providing the guide plate, the reinforcement cloth can pass through the channel more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 Schematic diagram of the structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0032] Figure 3 It is a schematic diagram of a partially enlarged structure of the present invention.

[0033] Figure 4 It is a structural schematic diagram of another angle of the present invention.

[0034] Figure 5 It is a schematic diagram of the structure of the reinforcement cloth cutting mechanism of the present invention.

[0035] Figure 6 This is a schematic diagram of the reinforcement cloth flipping process. Implementation

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] like Figure 1-6 As shown, the printing structure of the 3D printed inner reinforcement cloth wall includes:

[0038] A barrel 10, wherein a first driving motor 102 is installed on the upper part of the barrel 10, an extrusion type spiral blade is installed in the barrel 10, a driving end of the first driving motor 102 is transmission-connected to an input end of the extrusion type spiral blade, and a concrete printing head 101 symmetrically arranged in a horizontal direction with a discharge port is provided at the bottom of the barrel 10;

[0039] The reinforcement cloth introduction mechanism 20 is arranged at the front side of the barrel 10, and the reinforcement cloth introduction mechanism 20 includes a reinforcement cloth unwinding mechanism 201 for unwinding the reinforcement cloth, and a reinforcement cloth conveying mechanism 202 for conveying the reinforcement cloth to the rear side of the symmetrically arranged concrete printing head 101.

[0040] Specifically, the present invention arranges a reinforcement cloth formed by horizontal fine filaments pressed and bonded on the mesh cloth, arranges a concrete printing head 101 symmetrically arranged in the horizontal direction at the bottom of the barrel 10, and arranges the reinforcement cloth in the concrete to improve the impact resistance in the horizontal direction. At the same time, the impact resistance between 3D printing layers is improved by arranging overlapping parts between reinforcement cloth layers.

[0041] Furthermore, the reinforcement cloth unwinding mechanism 201 includes a fixed plate 2011, the fixed plate 2011 is fixed to the front side of the barrel 10, a reinforcement cloth installation roller 2012 and a reinforcement cloth changing roller group 2013 are provided on one side of the fixed plate 2011, and a second drive motor 2014 is installed on the other side of the fixed plate 2011, the output end of the second drive motor 2014 is transmission-connected to the input end of the reinforcement cloth installation roller 2012, and the reinforcement cloth changing roller group 2013 is used to flip the reinforcement cloth released by the reinforcement cloth installation roller 2012 into a vertical state, and then the reinforcement cloth is transmitted from the concrete printing head 101 to the rear side of the barrel 10 by the reinforcement cloth transmission mechanism 202, so that the reinforcement cloth is unwound by the reinforcement cloth installation roller 2012, and then the direction of the reinforcement cloth is changed to meet the use requirements by the reinforcement cloth changing roller group 2013, and finally, it is transmitted from the concrete printing head 101 to the rear side of the barrel 10 by the reinforcement cloth transmission mechanism 202, so that it meets the requirements during use.

[0042] Furthermore, in order to prevent the reinforcement cloth from spreading out when the reinforcement roll is unwound, an arc-shaped spring sheet 2015 is fixedly connected to the fixing plate 2011 , and the free end of the arc-shaped spring sheet 2015 is pressed onto the reinforcement cloth roll installed on the reinforcement cloth installation roller 2012 .

[0043] Furthermore, the reinforcement cloth changing roller group 2013 includes a first transition roller 20131 which is arranged in sequence from top to bottom and has the same rotation direction as the reinforcement cloth installation roller 2012, a first steering roller 20132 which is horizontally angled at 45° with the fixed plate 2011, a second steering roller 20133 which is arranged parallel to the fixed plate 2011, and a third steering roller 20134 which is vertically angled at 45° with the fixed plate 2011. A second transition roller 20135 and a third transition roller 20136 are also arranged vertically below the fixed plate 2011. In order to ensure that the reinforcement cloth can maintain a stable vertical state, one of the third transition rollers 20136 can be moved toward the other roller by a telescopic cylinder to realize the clamping and transmission of the reinforcement cloth.

[0044] Furthermore, in order to ensure the working stability of the reinforcement cloth conveying mechanism 202, the reinforcement cloth conveying mechanism 202 includes a rodless cylinder 2021, and a finger cylinder 2022 is fixedly connected to the slider of the rodless cylinder 2021. One end of the rodless cylinder 2021 is fixedly connected to the fixed plate 2011, and the other end passes through the top of the concrete printing head 101 to the rear side of the barrel 10. The finger cylinder 2022 is used to clamp the reinforcement cloth and drive the reinforcement cloth from the front side of the barrel 10 to the rear side of the barrel 10.

[0045] Furthermore, in order to facilitate automatic cutting of the reinforcement cloth when encountering doors, windows and other positions during 3D printing, a reinforcement cloth cutting mechanism 203 is further provided below the reinforcement cloth conveying mechanism 202. The reinforcement cloth cutting mechanism 203 is located at the front side of the concrete printing head 101 and behind the initial position of the finger cylinder 2022, and is fixedly connected to the concrete printing head 101. The reinforcement cloth cutting mechanism 203 includes a first clamping cylinder 2031 and a second clamping cylinder 2032 which are respectively arranged on both sides of the reinforcement cloth. A blade 20311 is provided at the end of the guide rod of the first clamping cylinder 2031, and a cutting groove 20321 matching the blade 20311 is provided at the end of the guide rod of the second clamping cylinder 2032.

[0046] Furthermore, in order to prevent bulges from appearing on the top of the concrete, a flat plate 1011 is provided above the discharge port of the concrete printing head 101, a channel 1012 for the reinforcement cloth to pass through is provided in the middle of the flat plate 1011, and a plug plate 1013 for closing the outlet of the concrete printing head 101 is provided at the rear side of the concrete printing head 101, and the tail end of the plug plate 1013 is fixedly connected to the end of the telescopic rod of the closing cylinder 1014.

[0047] Furthermore, in order to prevent the closed cylinder 1014 from contacting the concrete, a baffle 1015 is provided at the rear side of the concrete printing head 101 , and the length of the baffle 1015 is greater than the length from the concrete printing head 101 to the end of the closed cylinder 1014 .

[0048] Furthermore, in order to make it easier for the reinforcement cloth to pass through the channel 1012 on the flat plate 1011 , a guide plate 10121 arranged in an eight-shaped shape is fixedly connected to the flat plate 1011 located in front of the channel 1012 .

[0049] When used specifically,

[0050] 1. Install the reinforcement cloth roll on the reinforcement cloth installation roller 2012, pull out the reinforcement cloth from one end through the reinforcement cloth changing roller group 2013 to reach the reinforcement cloth conveying mechanism 202, clamp the reinforcement cloth end through the finger cylinder 2022, and then fix the printing structure of the 3D printed inner reinforcement cloth wall on the moving head of the upper printing frame, connect the barrel 10 to the injection pipe,

[0051] 2. When printing, align the concrete slurry outlet with the starting printing position, turn on the rodless cylinder 2021 to drive the finger cylinder 202 to make the reinforcement cloth enter the guide plate 10121, and transmit it to the rear side of the barrel through the channel 1012.

[0052] 3. Turn on the concrete slurry conveying equipment to convey concrete to the barrel 10, turn on the plug plate 1013, and then turn on the first drive motor 102 to allow the spiral blades to pressurize the concrete conveying to squeeze the reinforcement cloth at the front end. After the front end concrete squeezes the reinforcement cloth, the finger cylinder 2022 releases the reinforcement cloth and returns it to its original position. At the same time, the 3D printing drive mechanism drives the printing structure of the entire 3D printed inner reinforcement cloth wall to move, and at the same time, the reinforcement cloth unwinding mechanism 201 works, thereby realizing the 3D printing of the inner reinforcement cloth.

[0053] Fourth, when printing to the edge of the door or window opening, the rib cloth unwinding mechanism 201 stops working, the outlet plug plate 1013 closes the outlet, the slurry injection is stopped, the finger cylinder 2022 clamps the rib cloth, and the rib cloth cutting mechanism 203 works to cut off the rib cloth. When the print head continues to move to the other side of the door or window opening, repeat the second and third steps to continue working.

[0054] The control part can be controlled by manual operation or by a PLC controller. The specific working principle is the existing technology and will not be described in detail here.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The printing structure of the 3D printed inner reinforcement cloth wall is characterized in that: include, A barrel (10), wherein a first drive motor (102) is installed on the upper part of the barrel (10), an extrusion-type spiral blade is installed in the barrel (10), a drive end of the first drive motor (102) is drivingly connected to an input end of the extrusion-type spiral blade, and a concrete printing head (101) is symmetrically arranged in a horizontal direction with a discharge port at the bottom of the barrel (10); A reinforcement cloth introduction mechanism (20), the reinforcement cloth introduction mechanism (20) being arranged at the front side of the barrel (10), the reinforcement cloth introduction mechanism (20) comprising a reinforcement cloth unwinding mechanism (201) for unwinding the reinforcement cloth, and a reinforcement cloth conveying mechanism (202) for conveying the reinforcement cloth to the rear side of the symmetrically arranged concrete printing head (101); The reinforcement cloth unwinding mechanism (201) comprises a fixed plate (2011), the fixed plate (2011) being fixed to the front side of the barrel (10), a reinforcement cloth installation roller (2012) and a reinforcement cloth direction-changing roller group (2013) being provided on one side of the fixed plate (2011), a second drive motor (2014) being installed on the other side of the fixed plate (2011), the output end of the second drive motor (2014) being drivingly connected to the input end of the reinforcement cloth installation roller (2012), the reinforcement cloth direction-changing roller group (2013) being used to flip the reinforcement cloth released by the reinforcement cloth installation roller (2012) into a vertical position, and then being transmitted by the reinforcement cloth transmission mechanism (202) from between the concrete printing heads (101) to the rear side of the barrel (10).

2. The printing structure of the 3D printed inner reinforcement cloth wall according to claim 1, characterized in that: The fixed plate (211) is also fixedly connected to an arc-shaped spring sheet (2015), and the free end of the arc-shaped spring sheet (2015) is crimped onto a reinforcement cloth roll installed on the reinforcement cloth installation roller (2012).

3. The printing structure of the 3D printed inner reinforced cloth wall according to claim 1, characterized in that: The reinforcing cloth direction-changing roller group (2013) comprises, arranged in sequence from top to bottom, a first transition roller (20131) whose rotation direction is consistent with that of the reinforcing cloth installation roller (2012), a first steering roller (20132) whose horizontal angle with the fixed plate (2011 is 45 degrees, a second steering roller (20133) arranged parallel to the fixed plate (2011), and a third steering roller (20134) whose vertical angle with the fixed plate (2011 is 45 degrees; a second transition roller (20135) and a third transition roller (20136) are also arranged in a vertical direction below the fixed plate (2011).

4. The printing structure of the 3D printed inner reinforced cloth wall according to claim 2 or 3, characterized in that: The reinforcement cloth conveying mechanism (202) comprises a rodless cylinder (2021), a slider of the rodless cylinder (2021) being fixedly connected to a finger cylinder (2022), one end of the rodless cylinder (2021) being fixedly connected to the fixed plate (211), and the other end of the rodless cylinder (2021) passing through the top of the concrete printing head (101) to the rear side of the barrel (10), and the finger cylinder (2022) being used to clamp the reinforcement cloth and drive the reinforcement cloth from the front side of the barrel (10) to the rear side of the barrel (10).

5. The printing structure of the 3D printed inner reinforced cloth wall according to claim 4, characterized in that: A reinforcement cloth cutting mechanism (203) is also provided below the reinforcement cloth conveying mechanism (202). The reinforcement cloth cutting mechanism (203) is located at the front side of the concrete printing head (101) and behind the initial position of the finger cylinder (2022), and is fixedly connected to the concrete printing head (101). The reinforcement cloth cutting mechanism (203) comprises a first clamping cylinder (2031) and a second clamping cylinder (2032) respectively arranged on both sides of the reinforcement cloth. A blade (20311) is provided at the end of a guide rod of the first clamping cylinder (2031), and a cutting groove (20321) matching the blade (20311) is provided at the end of a guide rod of the second clamping cylinder (2032).

6. The printing structure of the 3D printed inner reinforced cloth wall according to claim 1, characterized in that: A flat plate (1011) is provided above the discharge port of the concrete printing head (101), a passage (1012) for the reinforcement cloth to pass through is provided in the middle of the flat plate (1011), and a plug plate (1013) for closing the outlet of the concrete printing head (101) is provided at the rear side of the concrete printing head (101), the rear end of the plug plate (1013) being fixedly connected to the end of the telescopic rod of the closing cylinder (1014).

7. The printing structure of the 3D printed inner-recessed reinforcement cloth wall according to claim 6, characterized in that: A baffle (1015) is provided at the rear side of the concrete printing head (101), and the length of the baffle (1015) is greater than the length from the concrete printing head (101) to the end of the closed cylinder (1014).

8. The printing structure of the 3D printed inner reinforced cloth wall according to claim 7, characterized in that: A guide plate (10121) arranged in an eight-shaped shape is fixedly connected to the flat plate (1011) located on the front side of the channel (1012).

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