Concrete 3D printing equipment

Abstract

The utility model discloses concrete 3D printing equipment which comprises a guide rail, a mechanical arm and a driving part for driving the mechanical arm to move along the guide rail, and a printing head set and an edge scraping part are arranged at the movable end of the mechanical arm. And the edge scraping part comprises two groups of scraping plates which are symmetrically arranged and is provided with an adjusting part, and the opening degree of the scraping plates is controlled through the adjusting part, so that the edge of the printed concrete is cleaned. The equipment further comprises a first linear module used for driving the edge scraping component to ascend and descend so as to adjust the edge cleaning mode in the printing process. The printing head set is composed of a fixed head and a movable head, the movable head is provided with a rotating part and a second linear module and used for adjusting the distance between the movable head and the fixed head, and therefore different printing requirements are met. The equipment can automatically adjust the position of the scraping part, accurately clean concrete edge residues, improve the printing quality and reduce manual intervention, and is particularly suitable for building projects with high surface quality requirements.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a concrete 3D printing device. Background Technology

[0002] With the rapid development of 3D printing technology, concrete 3D printing technology, as an emerging construction technology, is being gradually applied to the construction industry, especially in areas such as rapid construction, personalized structures, and green building, where it has significant advantages. Compared with traditional construction methods, concrete 3D printing can not only significantly reduce material waste, but also save labor and time costs and improve construction efficiency by optimizing structural design.

[0003] However, despite the many potential advantages of concrete 3D printing technology, existing concrete 3D printing equipment still faces numerous technical challenges in practical applications. Concrete's poor fluidity, rapid curing speed, and tendency to produce edge residues during the printing process often result in uneven edges or burrs on the surface of the printed concrete structure. For large-scale printing projects, especially when printing building walls and large structures, cleaning up edge residues requires significant manual time and effort, and manual cleaning makes it difficult to guarantee the uniformity and aesthetics of the edges.

[0004] While some existing concrete 3D printing equipment incorporates edge cleaning or grinding functions, this process typically requires manual intervention or adjustments to the equipment. This traditional method is not only time-consuming and labor-intensive, but also often fails to achieve ideal cleaning results due to the poor precision and consistency of manual operation. Furthermore, existing equipment has a low level of automation and typically cannot intelligently adjust to the specific shape of the concrete or the varying thickness of the printed layers during the printing process. This results in low efficiency during operation and may even lead to incomplete cleaning of certain areas, affecting the overall printing quality and the overall effectiveness of the equipment.

[0005] Therefore, how to design a concrete 3D printing equipment that can automatically clean up edge residues and improve printing quality has become an urgent technical problem to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a concrete 3D printing device with an edge scraping component that can be automatically adjusted. By precisely controlling the movement of the edge scraping component, excess concrete around the print head is cleaned, improving print quality and increasing the automation level of the device, thus reducing manual intervention.

[0007] The technical solution adopted by this utility model to solve the above problems is: a concrete 3D printing equipment, including a guide rail, a robotic arm and a driving component for driving the robotic arm to move along the guide rail. The movable end of the robotic arm is provided with a printing head group and a scraping component. The scraping component includes two sets of scrapers arranged symmetrically, and is adapted with an adjustment component for driving the two sets of scrapers to move closer or further apart.

[0008] Preferably, the adjustment component includes a trough, a dual-axis motor, and a slider. The dual-axis motor is disposed in the trough, the slider is threadedly fitted onto the motor shafts at both ends of the dual-axis motor, and a scraper is disposed below the slider.

[0009] Preferably, the scraping component is also adapted to a first linear module for driving its lifting and lowering. The first linear module includes a first lead screw motor and a first slide table threaded onto it. The groove of the adjusting component is installed and fixed on the first slide table.

[0010] Preferably, the printhead assembly includes a fixed head and a movable head. The fixed head is fixed to the movable end of the robotic arm, and the movable head is equipped with a rotating component that drives it to rotate around the fixed head, as well as a second linear module that adjusts the distance between the movable head and the fixed head.

[0011] Preferably, the rotating part includes a drive plate rotatably mounted on the fixed head. The drive plate is driven by a rotating motor through gear meshing. The second linear module is mounted and fixed on one side of the drive plate. It includes a second lead screw motor and a second slide table threaded onto it. The movable head is mounted on the second slide table through a fixed bracket.

[0012] Preferably, the scraping component further includes a connecting column, a support block, and a base plate. The connecting column is located below the slider, the support block is located below the connecting column, and the base plate is located on one side of the support block. The scraper is attached and fixed to the base plate.

[0013] Preferably, the scraper has a wavy outer surface.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention designs a concrete 3D printing device with an automatically adjustable scraping component, effectively cleaning edge residues during the printing process and avoiding the time-consuming, labor-intensive, and error-prone problems associated with traditional manual cleaning and adjustment. The device precisely controls the opening and closing degree and lifting and lowering of the scraping component through an adjustable mechanism, enabling automated cleaning based on the specific shape and thickness of the concrete during printing, thus improving the accuracy and efficiency of the printing process. Simultaneously, the wavy surface design of the scraping component further enhances the aesthetics of the wall surface. This highly automated device reduces manual intervention and operational errors, effectively improving the overall quality and production efficiency of concrete 3D printing, making it particularly suitable for construction projects with high requirements for printed surface quality. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural schematic diagram of the concrete 3D printing equipment according to an embodiment of the present invention.

[0018] Figure 2 This is a partial structural schematic diagram of the concrete 3D printing equipment according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the scraping and adjusting components according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the rotating component and the second linear module in an embodiment of this utility model.

[0021] Figure 5 This is a structural diagram of the wall.

[0022] In the diagram: guide rail 11, robotic arm 12, drive component 13, print head assembly 14, scraping component 15, scraper 16, adjustment component 17, groove 21, dual-axis motor 22, slider 23, first linear module 24, first lead screw motor 25, first slide table 26, fixed head 31, movable head 32, rotating component 33, second linear module 34, insulation wall 35, outer layer 36, inner layer 37, insulation layer 38, second linear module 39, drive plate 41, gear 42, rotating motor 43, second lead screw motor 44, second slide table 45, fixed bracket 46, connecting column 47, support block 48, base plate 49. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] Example: See Figure 1-4 In this embodiment, a concrete 3D printing device is disclosed, which is specifically used for edge grinding and cleaning of 3D printed concrete. Specifically, it includes a guide rail 11, a robotic arm 12, and a driving component 13 for driving the robotic arm 12 to move along the guide rail 11. The movable end of the robotic arm 12 is provided with a printing head group 14 and an edge scraping component 15. The edge scraping component 15 includes two sets of scrapers 16 arranged symmetrically, and is adapted with an adjustment component 17 for driving the two sets of scrapers 16 to move closer or further away.

[0025] Specifically, in this embodiment, the guide rail 11 provides a stable support structure for the equipment, ensuring that the robotic arm 12 can move along the guide rail 11. The robotic arm 12 is controlled by the drive component 13, and can move up and down as needed during the printing process, driving the print head assembly 14 and the scraping component 15 to perform corresponding operations. The robotic arm 12 drives the scraper 16 to move along both sides of the printed concrete. The scraping component 15 drives its two sets of scrapers 16 to open and close through the adjustment component 17. The scrapers 16 scrape the edges of the concrete on both sides, removing excess concrete from the rough edges and smoothing them, ensuring that the surface of each layer of concrete edge is flat, avoiding the time-consuming and laborious traditional manual grinding.

[0026] In addition, the adjusting component 17 can control the opening and closing degree (spacing) of the scraper 16, see [link / reference]. Figure 3 It includes a groove 21, a dual-axis motor 22, and a slider 23. The dual-axis motor 22 is disposed inside the groove 21, and the slider 23 is threadedly fitted onto the motor shafts at both ends of the dual-axis motor 22. A scraper 16 is disposed below the slider 23. The scraper 16 is driven to open and close by adjusting the component 17, which can adapt to walls of different printing thicknesses.

[0027] This equipment can automatically clean up residual concrete at the edges generated during the printing process, avoiding the tediousness and errors of manual grinding, and improving the overall printing quality and efficiency. This technical solution effectively solves the problem of incomplete edge residue cleaning in existing concrete 3D printing equipment, ensuring the quality stability and surface smoothness of each layer of concrete during the printing process, and is particularly suitable for engineering projects with high requirements for the appearance of printed building walls.

[0028] See Figure 2In this embodiment, the scraping component 15 is also equipped with a first linear module 24 for driving its lifting and lowering. The first linear module 24 includes a first lead screw motor 25 and a first slide 26 threaded onto it. The groove 21 of the adjusting component 17 is fixedly mounted on the first slide 26. By driving the scraping component 15 to lift and lower through the first linear module 24, the scraping component 15 is raised to reduce interference with printing when the device is using the print head (printing concrete). Before the concrete scraping process, the height of the scraping component 15 needs to be lowered. During the scraping process, the scraping component 15 can be repeatedly raised or lowered by high-frequency drive, which can further improve the scraping effect.

[0029] See Figure 4 In this embodiment, the print head assembly 14 includes a fixed head 31 and a movable head 32. The fixed head 31 is fixed to the movable end of the robotic arm 12. The movable head 32 is equipped with a rotating component 33 that drives it to rotate around the fixed head 31, and a second linear module 34 that adjusts its distance from the fixed head 31. The rotating component 33 provides rotational power to the movable head 32, enabling it to adjust the printing position and angle as needed, which is suitable for the requirement of simultaneously printing two concrete layers in concrete 3D printing. By driving the movable head 32 to rotate through the rotating component 33, it can better adapt to printing curves or printing tasks at specific angles, which is suitable for printing multi-layer walls. For example, an insulation wall 35 typically includes an outer layer 36, an inner layer 37, and an insulation layer 38 located between them. Both the outer layer 36 and the inner layer 37 are printed from concrete. The fixed head 31 and the movable head 32 can achieve simultaneous printing of the outer layer 36 and the inner layer 37, thereby improving the printing efficiency of similar structures.

[0030] Furthermore, the second linear module 34 can adjust the distance between the movable head 32 and the fixed head 31. Again, taking the printing of the insulation wall 35 as an example, by adjusting the distance between the movable head 32 and the fixed head 31 through the second linear module 34, the thickness of the insulation layer 38 between the outer layer 36 and the inner layer 37 can be adjusted. Figure 5 As shown, the thickness of the printed wall (outer layer 36 + insulation layer 38 + inner layer 37) can also be adjusted accordingly.

[0031] In this embodiment, the rotating part includes a drive plate 41 rotatably mounted on the fixed head 31. The drive plate 41 is driven by a rotating motor 43 through gear 42. The second linear module 34 is mounted and fixed on one side of the drive plate 41. It includes a second lead screw motor 44 and a second slide 45 threaded onto it. The movable head 32 is mounted on the second slide 45 through a fixed bracket 46.

[0032] In this embodiment, the scraping component 15 further includes a connecting post 47, a support block 48, and a base plate 49. The connecting post 47 is located below the slider 23, the support block 48 is located below the connecting post 47, and the base plate 49 is located on one side of the support block 48. The scraper 16 is attached and fixed to the base plate 49.

[0033] The scraper 16 is provided with a wavy outer surface, which can press the two sides of the concrete layer together from the wavy surface during the scraping process, so that the wall surface after printing has a wavy texture, which has a certain aesthetic appeal.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A concrete 3D printing device, comprising a guide rail, a robotic arm, and a driving component for moving the robotic arm along the guide rail, characterized in that, The movable end of the robotic arm is equipped with a print head assembly and a scraping component. The scraping component includes two sets of scrapers arranged symmetrically and is adapted with an adjustment component that drives the two sets of scrapers to move closer or further apart. The printhead assembly includes a fixed head and a movable head. The fixed head is fixed to the movable end of the robotic arm, and the movable head is equipped with a rotating component that drives it to rotate around the fixed head, as well as a second linear module that adjusts the distance between the movable head and the fixed head.

2. The concrete 3D printing equipment according to claim 1, characterized in that: The adjustment components include a trough, a dual-axis motor, and a slider. The dual-axis motor is located inside the trough, and the slider is threadedly fitted onto the motor shafts at both ends of the dual-axis motor. A scraper is located below the slider.

3. The concrete 3D printing equipment according to claim 2, characterized in that: The scraping component is also adapted to a first linear module for driving its lifting and lowering. The first linear module includes a first lead screw motor and a first slide table threaded onto it. The groove of the adjusting component is installed and fixed on the first slide table.

4. The concrete 3D printing equipment according to claim 1, characterized in that: The rotating part includes a drive plate rotatably mounted on the fixed head. The drive plate is driven by a rotating motor through gear meshing. The second linear module is mounted and fixed on one side of the drive plate. It includes a second lead screw motor and a second slide table threaded onto it. The movable head is mounted on the second slide table through a fixed bracket.

5. The concrete 3D printing equipment according to claim 1, characterized in that: The scraping component also includes a connecting column, a support block, and a base plate. The connecting column is located below the slider, the support block is located below the connecting column, and the base plate is located on one side of the support block. The scraper is attached and fixed to the base plate.

6. The concrete 3D printing equipment according to claim 1, characterized in that: The scraper has a wavy outer surface.

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