Cantilever type concrete 3D printing device

Abstract

The utility model relates to a cantilever type concrete 3D printing device which comprises a rack, a printing head, an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis moving mechanism. The Y-axis moving mechanism is installed on the X-axis moving mechanism and can move on the X-axis moving mechanism in the X-axis direction. The Z-axis moving mechanism is installed on the Y-axis moving mechanism and can move on the Y-axis moving mechanism in the Y-axis direction. The printing head is installed on the Z-axis moving mechanism, and the Z-axis moving mechanism is used for driving the printing head to move in the Z-axis direction. The 3D printing device has the beneficial effects that the printing head extrudes a printing material to a corresponding position according to a set printing path, feeding speed and walking speed, and the printing material is overlapped and solidified layer by layer, so that the automatic operation of 3D printing of concrete can be realized; and the equipment is simple in structure, small in size, small in occupied space, convenient to assemble and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, concretely relates to a cantilever type concrete 3D printing device. BACKGROUND

[0002] In recent years, 3D printing technology is gradually applied to house building, road and bridge construction fields. 3D printing concrete is a kind of rapid prototyping technology, uses concrete material as special "ink", and is printed and constructed by extruding and layering materials, has the advantages of automation, no template and rapid prototyping, has significant advantages in the construction of special shapes and other special shapes, makes up for the deficiency of traditional construction, and has broad development prospects.

[0003] The concrete 3D printing equipment is an important tool for realizing template-free construction and stacking of printing materials. At present, the concrete building 3D printer mainly adopts gantry type and mechanical arm type structures. The printing space of the gantry structure is large, and the printing precision is high. The printing head can move freely in X, Y and Z directions, realizes printing work in different directions, is suitable for printing components with different length-width ratios, but occupies a large area and is not easy to assemble. The mechanical arm structure has higher movement freedom and is suitable for printing components with complex curved geometrical shapes, but the structure is complex and the overall cost is high. Therefore, it is urgent to develop a concrete 3D printing device with simple structure, convenient operation and low overall cost. UTILITY MODEL CONTENT

[0004] The utility model provides a cantilever type concrete 3D printing device, aims at solving the problem in prior art.

[0005] The utility model solves the above technical problems by the following technical scheme:

[0006] A cantilever type concrete 3D printing device, comprising a rack, a printing head, an X-axis moving mechanism, a Y-axis moving mechanism and a Z-axis moving mechanism, the X-axis moving mechanism is installed on the rack, the Y-axis moving mechanism is installed on the X-axis moving mechanism, and the Y-axis moving mechanism can move along the X-axis direction on the X-axis moving mechanism, the Z-axis moving mechanism is installed on the Y-axis moving mechanism, and the Z-axis moving mechanism can move along the Y-axis direction on the Y-axis moving mechanism, and the printing head is installed on the Z-axis moving mechanism, and the Z-axis moving mechanism is used for driving the printing head to move in the Z-axis direction.

[0007] The utility model has the advantages that in the printing process, the X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism are used to realize the movement of the printing head in the X-axis direction, the Y-axis direction and the Z-axis direction, so that the printing component with the set shape is printed, and the printing is convenient and efficient.

[0008] The utility model discloses a printing head according to the printing path, the feeding speed and the walking speed of setting up good extrude printing material to corresponding position layer by layer and add solidification, can realize concrete 3D printing automation operation, and the equipment simple structure, small, small space occupation, convenient assembly, low in cost.

[0009] On the basis of the above technical scheme, the utility model further can make improvement as follows.

[0010] Further, the Z-axis moving mechanism includes a Z-axis driving member and a Z-axis slide rail set, the Z-axis slide rail set is slidably connected with the Y-axis moving mechanism through a Y-axis slide block set, a Z-axis slide block set is slidably installed on the Z-axis slide rail set, the Z-axis driving member is installed on the Z-axis slide rail set and is in transmission connection with the Z-axis slide block set, and the printing head is fixedly installed on the Z-axis slide block set.

[0011] The above further scheme has the beneficial effects that during printing, the Z-axis slide block set is driven to slide on the Z-axis slide rail set by the Z-axis driving member, so that the printing head is moved in the Z-axis direction, and corresponding printing operation is completed, which is convenient.

[0012] Further, the Z-axis slide rail set includes two Z-axis slide rails, the two Z-axis slide rails are oppositely distributed and are fixedly connected through a connecting plate, the Y-axis slide block set includes two Y-axis slide blocks, the two Y-axis slide blocks are oppositely fixedly installed at one end of the two Z-axis slide rails and are respectively in sliding connection with the Y-axis moving mechanism, the Z-axis driving member includes a Z-axis motor and a Z-axis screw rod, the Z-axis screw rod is installed on one side of any one of the Z-axis slide rails and can rotate around its own axis, and a Z-axis nut is threadedly sleeved on the Z-axis screw rod, and the Z-axis slide block set includes two Z-axis slide blocks, the two Z-axis slide blocks are respectively slidably installed on the two Z-axis slide rails, and any one of the Z-axis slide blocks is in fixed connection with the Z-axis nut.

[0013] The above further scheme has the beneficial effects that the structure is simple and reasonable, the two Z-axis slide rails are respectively in sliding connection with the Y-axis moving mechanism through the two Y-axis slide blocks, the stability of the whole Z-axis slide rail set is improved, meanwhile, the printing head is respectively in sliding connection with the two Z-axis slide rails through the two Z-axis slide blocks, the Z-axis motor is used to drive the Z-axis screw rod to rotate, the Z-axis nut is moved through the thread connection between the Z-axis nut and the Z-axis screw rod, the Z-axis nut drives the two Z-axis slide blocks to slide along the two Z-axis slide rails, so that the position of the printing head in the Z-axis direction is changed, and relevant operation of the printing head is completed.

[0014] Further, the other ends of the two Z-axis sliding rails are provided with a U-shaped frame, the other ends of the two Z-axis sliding rails extend into the U-shaped frame from the open ends of the U-shaped frame, and then penetrate the closed ends of the U-shaped frame and are in sliding fit with the closed ends of the U-shaped frame respectively; the two Z-axis sliding blocks are oppositely distributed on the sides of the two Z-axis sliding rails away from each other, and are fixedly connected with the two sides of the open ends of the U-shaped frame respectively.

[0015] The beneficial effect of the above further scheme is that the U-shaped frame is reasonably arranged, which can realize the sliding connection with the two Z-axis sliding rails and the fixed connection with the two Z-axis sliding blocks, and does not affect the movement of the whole printing head.

[0016] Further, the Y-axis moving mechanism comprises a Y-axis sliding rail, a Y-axis motor and a Y-axis screw, the Y-axis sliding rail is installed on the X-axis moving mechanism, and the two Y-axis sliding blocks are in sliding connection with the Y-axis sliding rail respectively; the Y-axis screw is installed on the Y-axis sliding rail and can rotate around its axis, a Y-axis nut is threadedly sleeved on the Y-axis screw, and the connecting plate is fixedly connected with the Y-axis nut; the Y-axis motor is fixedly installed on the Y-axis sliding rail, the driving end of the Y-axis motor extends along the axis of the Y-axis screw and is fixedly connected with one end of the Y-axis screw.

[0017] The beneficial effect of the above further scheme is that during printing, the Y-axis motor drives the Y-axis screw to rotate, the Y-axis screw moves the Y-axis nut along the axis of the Y-axis screw through the threaded connection between them, and the connecting plate drives the two Y-axis sliding blocks and the two Z-axis sliding rails to move along the Y-axis direction through the connection between the Y-axis nut and the connecting plate, so as to change the position of the printing head in the Y-axis direction.

[0018] Further, the X-axis moving mechanism comprises an X-axis driving member and an X-axis sliding rail set, the X-axis sliding rail set is installed on the rack and is in sliding connection with the Y-axis moving mechanism through the X-axis sliding block set; the X-axis driving member is installed on the X-axis sliding rail set and is in transmission connection with the X-axis sliding block set.

[0019] The beneficial effect of the above further scheme is that during printing, the X-axis driving member drives the X-axis sliding block set to slide on the X-axis sliding rail set, so as to realize the movement of the Y-axis moving mechanism in the X-axis direction, thereby changing the position of the printing head in the X-axis direction, and the adjustment is convenient.

[0020] Further, the X-axis sliding rail set comprises two X-axis sliding rails, the two X-axis sliding rails are oppositely installed on the rack; the X-axis sliding block set comprises two X-axis sliding blocks, the two X-axis sliding blocks are oppositely installed on the two X-axis sliding rails and are fixedly connected with the two ends of the Y-axis moving mechanism respectively; the X-axis driving member is in transmission connection with any one of the X-axis sliding blocks.

[0021] The beneficial effect of the further scheme is that the structure is simple and reasonable, the upper end and the lower end of the Y-axis moving mechanism are slidably connected with the two X-axis sliding rails through the X-axis sliding blocks, and the stability of the Y-axis moving mechanism is ensured.

[0022] Further, the X-axis driving member comprises an X-axis motor and an X-axis lower lead screw, the X-axis lower lead screw is installed on the rack and can rotate around its axis, an X-axis lower nut is threadedly sleeved on the X-axis lower lead screw, and the X-axis lower nut is fixedly connected with any one of the X-axis sliding blocks; the X-axis motor is fixedly installed on the rack, the driving end of the X-axis motor extends along the axis of the X-axis lower lead screw, and the driving end of the X-axis motor is fixedly connected with one end of the X-axis lower lead screw.

[0023] The beneficial effect of the further scheme is that during printing, the X-axis motor drives the X-axis lower lead screw to rotate, the X-axis lower nut is moved along the axis of the X-axis lower lead screw through the threaded connection between the X-axis lower nut and the X-axis lower lead screw, and the corresponding X-axis sliding block is driven to slide by the X-axis lower nut, so that the position of the print head in the X-axis direction is changed.

[0024] Further, the X-axis driving member further comprises an X-axis upper lead screw, the X-axis upper lead screw is installed on the rack and is located above the X-axis lower lead screw and parallel to the X-axis lower lead screw; the X-axis upper lead screw can rotate around its axis, an X-axis upper nut is threadedly sleeved on the X-axis upper lead screw, and the X-axis upper nut is fixedly connected with the other X-axis sliding block; a synchronous wheel is coaxially and fixedly sleeved on the same end of the X-axis upper lead screw and the X-axis lower lead screw, and the two synchronous wheels are drivingly connected through a synchronous belt.

[0025] The beneficial effect of the further scheme is that the structure is simple and reasonable, the X-axis upper lead screw and the X-axis lower lead screw are synchronously rotated through the synchronous belt and the two synchronous wheels, the two X-axis sliding blocks are synchronously slid along the two X-axis sliding rails, and the stability of the Y-axis moving mechanism in the X-axis direction is ensured.

[0026] Further, the rack comprises a base and an upper support, a plurality of Forma wheels are uniformly and spacedly installed on the bottom of the base and can rotate, the upper support is located above the base, the two ends of the upper support are connected with the two ends of the base through jackscrews, and the X-axis moving mechanism is installed on the base and the upper support.

[0027] The beneficial effect of the further scheme is that the structure is simple and reasonable, the rack is assembled by the base and the upper support, and the assembly is convenient.

[0028] In addition, the two ends of the upper support are connected with the two ends of the base through jackscrews, and the parallelism adjustment of the two X-axis sliding rails can be realized through the jackscrew structure during assembly. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is one of the whole structure schematic view of the utility model;

[0030] Figure 2 It is the second whole structure schematic view of the utility model;

[0031] Figure 3 It is the structure schematic view of the rack in the utility model;

[0032] Figure 4 It is Figure 3 The enlarged view of A in the utility model;

[0033] Figure 5 It is the three-dimensional structure schematic view of the print head in the utility model;

[0034] Figure 6 It is the structure schematic view of the X-axis lower lead screw in the utility model;

[0035] Figure 7 It is the structure schematic view of the X-axis upper lead screw in the utility model;

[0036] Figure 8 It is the structure schematic view of the Y-axis moving mechanism in the utility model;

[0037] Figure 9 It is the second structure schematic view of the Y-axis moving mechanism in the utility model;

[0038] Figure 10 It is the structure schematic view of the Z-axis moving mechanism in the utility model.

[0039] In the drawings, the component list represented by each sign is as follows:

[0040] 1, rack; 2, print head; 3, X-axis moving mechanism; 4, Y-axis moving mechanism; 5, Z-axis moving mechanism; 6, U-shaped frame; 7, base; 8, upper support; 9, form wheel; 10, top wire; 11, feeding pipe; 12, synchronous belt; 13, Z-axis slide rail; 14, connecting plate; 15, Y-axis slide block; 16, Z-axis motor; 17, Z-axis lead screw; 18, Z-axis nut; 19, Z-axis slide block; 20, Y-axis slide rail; 21, Y-axis motor; 22, Y-axis lead screw; 23, Y-axis nut; 24, X-axis slide rail; 25, X-axis slide block; 26, X-axis motor; 27, X-axis lower lead screw; 28, X-axis lower nut; 29, X-axis upper lead screw; 30, X-axis upper nut; 31, synchronous wheel. DETAILED DESCRIPTION

[0041] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0042] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0043] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0044] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0045] Embodiment 1

[0046] As Figures 1 to 10 shown, the utility model provides a cantilever type concrete 3D printing device, including frame 1, printing head 2, X axis moving mechanism 3, Y axis moving mechanism 4 and Z axis moving mechanism 5, X axis moving mechanism 3 is installed on frame 1, Y axis moving mechanism 4 is installed on X axis moving mechanism 3, and it can move along X axis direction on X axis moving mechanism 3, Z axis moving mechanism 5 is installed on Y axis moving mechanism 4, and it can move along Y axis direction on Y axis moving mechanism 4, printing head 2 is installed on Z axis moving mechanism 5, and Z axis moving mechanism 5 is used to drive printing head 2 to move in Z axis direction.

[0047] In the printing process, X axis moving mechanism 3, Y axis moving mechanism 4 and Z axis moving mechanism 5 are used to realize the movement of printing head 2 in X axis direction, Y axis direction and Z axis direction respectively, so that the printing member of the set shape is printed, and the printing is convenient and efficient.

[0048] It should be noted that the above printing head 2 uses the prior art, and the specific structure and principle will not be described here.

[0049] In addition, in actual application, a suitable model of printing head 2 can be selected according to the needs, which is convenient to replace and has strong versatility.

[0050] The printing head of the embodiment extrudes the printing material to the corresponding position according to the set printing path, feeding speed and walking speed, and the printing material is solidified layer by layer, which can realize the automation of concrete 3D printing; and the device has simple structure, small volume, small space occupation, convenient assembly and low cost.

[0051] Embodiment 2

[0052] In the embodiment, the Z-axis moving mechanism 5 includes a Z-axis driving member and a Z-axis slide rail set, the Z-axis slide rail set is slidably connected with the Y-axis moving mechanism 4 through the Y-axis slide block set, the Z-axis slide block set is slidably installed on the Z-axis slide rail set, the Z-axis driving member is installed on the Z-axis slide rail set and is in transmission connection with the Z-axis slide block set, and the printing head 2 is fixedly installed on the Z-axis slide block set.

[0053] During printing, the Z-axis slide block set is driven by the Z-axis driving member to slide on the Z-axis slide rail set, so as to drive the printing head 2 to move in the Z-axis direction, and the corresponding printing operation is completed, which is convenient.

[0054] Embodiment 3

[0055] In the embodiment, the Z-axis slide rail set includes two Z-axis slide rails 13, the two Z-axis slide rails 13 are oppositely distributed and are fixedly connected through a connecting plate 14, the Y-axis slide block set includes two Y-axis slide blocks 15, the two Y-axis slide blocks 15 are oppositely fixedly installed on one end of the two Z-axis slide rails 13 and are slidably connected with the Y-axis moving mechanism 4 respectively, the Z-axis driving member includes a Z-axis motor 16 and a Z-axis screw 17, the Z-axis screw 17 is installed on one side of any one of the Z-axis slide rails 13 and can rotate around its own axis, and a Z-axis nut 18 is threadedly sleeved on the Z-axis screw 17, and the Z-axis slide block set includes two Z-axis slide blocks 19, the two Z-axis slide blocks 19 are slidably installed on the two Z-axis slide rails 13 respectively, and any one of the Z-axis slide blocks 19 is fixedly connected with the Z-axis nut 18.

[0056] The scheme has simple structure and reasonable design. The two Z-axis sliding rails 13 are slidably connected with the Y-axis moving mechanism 4 by the two Y-axis sliding blocks 15, thereby increasing the stability of the Z-axis sliding rails 13. Meanwhile, the print head 2 is slidably connected with the two Z-axis sliding rails 13 by the two Z-axis sliding blocks 19. The Z-axis motor 16 drives the Z-axis screw 17 to rotate, and the Z-axis nut 18 is moved by the threaded connection between the Z-axis nut 18 and the Z-axis screw 17. The Z-axis nut 18 drives the two Z-axis sliding blocks 19 to slide along the two Z-axis sliding rails 13, so as to change the position of the print head 2 in the Z-axis direction, and complete the related work of the print head 2.

[0057] Embodiment 4

[0058] In this embodiment, the Y-axis moving mechanism 4 includes a Y-axis sliding rail 20, a Y-axis motor 21 and a Y-axis screw 22. The Y-axis sliding rail 20 is installed on the X-axis moving mechanism 3, and the two Y-axis sliding blocks 15 are slidably connected with the Y-axis sliding rail 20. The Y-axis screw 22 is installed on the Y-axis sliding rail 20 and can rotate around its own axis. A Y-axis nut 23 is threadedly sleeved on the Y-axis screw 22, and the connecting plate 14 is fixedly connected with the Y-axis nut 23. The Y-axis motor 21 is fixedly installed on the Y-axis sliding rail 20, and its driving end extends along the axis of the Y-axis screw 22 and is fixedly connected with one end of the Y-axis screw 22.

[0059] During printing, the Y-axis motor 21 drives the Y-axis screw 22 to rotate. The Y-axis screw 22 drives the Y-axis nut 23 to move along the axis of the Y-axis screw 22 by the threaded connection between the Y-axis screw 22 and the Y-axis nut 23. The connecting plate 14 drives the two Y-axis sliding blocks 15 and the two Z-axis sliding rails 13 to move along the Y-axis direction by the connection between the Y-axis nut 23 and the connecting plate 14, so as to change the position of the print head 2 in the Y-axis direction.

[0060] Based on the above scheme, the Y-axis sliding rail 20 is vertically arranged (i.e. along the Y-axis direction), and the two sides of the Y-axis sliding rail 20 are respectively provided with sliding grooves. The two Y-axis sliding blocks 15 are slidably connected with the two sides of the Y-axis sliding rail 20.

[0061] Embodiment 5

[0062] In this embodiment, the other end of each of the two Z-axis sliding rails 13 is provided with a U-shaped frame 6. The other end of each of the two Z-axis sliding rails 13 extends into the U-shaped frame 6 from the open end of the U-shaped frame 6, penetrates through the closed end of the U-shaped frame 6, and is slidably attached to the closed end of the U-shaped frame 6. The two Z-axis sliding blocks 19 are oppositely arranged on the side of the two Z-axis sliding rails 13 away from each other, and are respectively fixedly connected with the two sides of the open end of the U-shaped frame 6.

[0063] The U-shaped frame 6 is reasonably arranged, can realize sliding connection with the two Z-axis sliding rails 13, can be fixedly connected with the two Z-axis sliding blocks 19, and will not affect the movement of the whole print head 2.

[0064] Embodiment 6

[0065] On the basis of the above-mentioned embodiments, in this embodiment, the X-axis moving mechanism 3 comprises an X-axis driving member and an X-axis sliding rail set, the X-axis sliding rail set is installed on the frame 1, and is in sliding connection with the Y-axis moving mechanism 4 through an X-axis sliding block set; the X-axis driving member is installed on the X-axis sliding rail set, and is in transmission connection with the X-axis sliding block set.

[0066] During printing, the X-axis sliding block set is driven to slide on the X-axis sliding rail set by the X-axis driving member, so as to realize the movement of the Y-axis moving mechanism 4 in the X-axis direction, thereby changing the position of the print head 2 in the X-axis direction, and the adjustment is convenient.

[0067] Embodiment 7

[0068] On the basis of embodiment 6, in this embodiment, the X-axis sliding rail set comprises two X-axis sliding rails 24, the two X-axis sliding rails 24 are oppositely installed on the frame 1; the X-axis sliding block set comprises two X-axis sliding blocks 25, the two X-axis sliding blocks 25 are oppositely installed on the two X-axis sliding rails 24, and are respectively fixedly connected with two ends of the Y-axis moving mechanism 4; and the X-axis driving member is in transmission connection with any one of the X-axis sliding blocks 25.

[0069] This scheme has simple structure and reasonable design, the upper end and the lower end of the Y-axis moving mechanism 4 are respectively in sliding connection with the two X-axis sliding rails 24 through the X-axis sliding blocks 25, so as to ensure the stability of the sliding of the Y-axis moving mechanism 4.

[0070] On the basis of the above-mentioned scheme, the two X-axis sliding rails 24 are oppositely installed on the frame 1, and the Y-axis sliding rail 20 is vertically arranged between the two X-axis sliding rails 24.

[0071] Embodiment 8

[0072] On the basis of embodiment 7, in this embodiment, the X-axis driving member comprises an X-axis motor 26 and an X-axis lower lead screw 27, the X-axis lower lead screw 27 is installed on the frame 1, can rotate around its own axis, and is sleeved with an X-axis lower nut 28 through threads, the X-axis lower nut 28 is fixedly connected with any one of the X-axis sliding blocks 25; and the X-axis motor 26 is fixedly installed on the frame 1, and its driving end extends along the axis of the X-axis lower lead screw 27, and is fixedly connected with one end of the X-axis lower lead screw 27.

[0073] When printing, the X-axis lower screw rod 27 is driven to rotate by the X-axis motor 26, the X-axis lower nut 28 is moved along the axial direction of the X-axis lower screw rod 27 by virtue of the threaded connection between the X-axis lower screw rod 27 and the X-axis lower nut 28, thereby driving the corresponding X-axis sliding block 25 to slide along with the X-axis lower nut 28, so as to change the position of the printing head in the X-axis direction.

[0074] Embodiment 9

[0075] In the embodiment, the X-axis driving member further comprises an X-axis upper screw rod 29, which is installed on the frame 1 and is parallel to the X-axis lower screw rod 27; the X-axis upper screw rod 29 is rotatable about its own axis, and an X-axis upper nut 30 is threadedly sleeved on the X-axis upper screw rod 29; the X-axis upper nut 30 is fixedly connected with another X-axis sliding block 25; the X-axis upper screw rod 29 and the X-axis lower screw rod 27 are coaxially fixedly sleeved with a synchronous wheel 31 at the same end, and the two synchronous wheels 31 are drivingly connected by a synchronous belt 12.

[0076] The scheme has simple structure and reasonable design, and the X-axis upper screw rod 29 and the X-axis lower screw rod 27 are synchronously rotated by virtue of the synchronous belt 12 and the two synchronous wheels 31, so that the two X-axis sliding blocks 25 are synchronously slid along the two X-axis sliding rails 24, thereby ensuring the stability of the Y-axis moving mechanism 4 in the X-axis direction.

[0077] Embodiment 10

[0078] In the embodiment, the frame 1 comprises a base 7 and an upper support 8; the base 7 is uniformly and spacedly provided with a plurality of Forma wheels 9 at the bottom; the upper support 8 is located above the base 7 and is connected with the two ends of the base 7 by means of the jackscrews 10; and the X-axis moving mechanism 3 is installed on the base 7 and the upper support 8.

[0079] The scheme has simple structure and reasonable design, and the frame is assembled by the base and the upper support, so that the assembly is convenient; in addition, the two ends of the upper support 8 are connected with the two ends of the base 7 by means of the jackscrews 10, so that the parallelism of the two X-axis sliding rails 24 can be adjusted by the jackscrew structure during assembly.

[0080] The working principle of the utility model is as follows:

[0081] Step one: prepare or prepare the concrete material and the admixture material, and connect the concrete volumetric pump and the admixture volumetric pump with the printing head through the conveying pipes;

[0082] Step two: according to the structural design parameters of the concrete component to be printed, use CAD / CAM and 3D printing layering software to plan the 3D printing path, and compile numerical control instructions;

[0083] Step three: according to the printing material performance, the shape and size of the extrusion port and the printing path planning, determine the reasonable printing speed;

[0084] Step four: start the control system, import the numerical control instruction information of the printing path into the control system, can control the motion trajectory of the three-way walking mechanism through the forward rotation, reverse rotation, brake holding and other actions of the servo motor of X axis, Y axis and Z axis, the control system synchronously controls the flow of the concrete volumetric pump and the additive volumetric pump, finally realizes the precise control of the spatial position, walking speed and feeding speed of the printing head in the printing process;

[0085] Step five: according to the planned 3D printing path, the printing head moves and extrudes the printing material under the preset trajectory, and finally forms the required printed component.

[0086] Example: start the system to print a "C" shaped wall on the ground, the printing head first returns to the XYZ origin (the origin position can be set according to the requirements, and in this example, the XYZ origin is respectively the left limit position of X axis, the lower limit position of Y axis and the innermost limit position of Z axis) under the instruction of the control system (equivalent to the controller in the prior art), and the concrete volumetric pump and the additive volumetric pump start pumping according to the preset parameters;

[0087] When the printing material reaches the printing head and starts to extrude, the control system decomposes the C-shaped motion trajectory into X and Z axis movements, the X axis drive motor rotates according to the control system instruction, the printing head moves along the X direction, and the Z axis drive motor acts according to the control system instruction, when the Z axis drive motor runs to the top of the C-shaped according to the set parameters, the motor changes the direction and performs the second half of the printing work, until a complete C-shaped is printed, at this time, the Y axis drive motor rises a printing height (set according to the printing material characteristics and the shape and size of the extrusion port of the printing head) according to the preset parameters, and then the Y axis drive motor performs the brake holding action, the space height of the printing head is fixed, at this time, the X and Z axis drive motors perform the movement again in the opposite direction, and the cycle is repeated, finally the C-shaped wall printing is realized.

[0088] The utility model provides a kind of cantilever type concrete 3D printing device, printing head is extruded to corresponding position layer by layer and solidifies according to set printing path, feeding speed and walking speed Printing material, can realize concrete 3D printing automation operation.The device structure is simple, the amount of material such as guide rail, screw rod is less, and the overall cost is low;Overall space occupation is small, printing head adopts cantilever structure, which is convenient for operation and observation, especially suitable for printing wall, isolation belt, fence, flower bed and other strip-shaped concrete components;Machine frame structure has strong stability, and screw rod drive is accurate and high, which ensures printing quality.

[0089] It should be noted that each electronic component involved in the present application adopts the prior art, and the above-mentioned components are electrically connected with the controller, and the control circuit between the controller and each component is the prior art.

[0090] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0091] In addition, it should be understood that although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0092] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cantilevered concrete 3D printing device, characterized by: The application relates to a printing device, which comprises a rack (1), a printing head (2), an X-axis moving mechanism (3), a Y-axis moving mechanism (4) and a Z-axis moving mechanism (5), the X-axis moving mechanism (3) is installed on the rack (1), the Y-axis moving mechanism (4) is installed on the X-axis moving mechanism (3) and can move along the X-axis direction on the X-axis moving mechanism (3), the Z-axis moving mechanism (5) is installed on the Y-axis moving mechanism (4) and can move along the Y-axis direction on the Y-axis moving mechanism (4), and the printing head (2) is installed on the Z-axis moving mechanism (5) and driven by the Z-axis moving mechanism (5) to move along the Z-axis direction.

2. The cantilevered concrete 3D printing device according to claim 1, characterized in that: The Z-axis moving mechanism (5) comprises a Z-axis driving part and a Z-axis slide rail set, the Z-axis slide rail set is slidably connected with the Y-axis moving mechanism (4) through a Y-axis slide block set, a Z-axis slide block set is slidably installed on the Z-axis slide rail set, the Z-axis driving part is installed on the Z-axis slide rail set and is in transmission connection with the Z-axis slide block set, and the printing head (2) is fixedly installed on the Z-axis slide block set.

3. The cantilevered concrete 3D printing device according to claim 2, characterized in that: The Z-axis slide rail set comprises two Z-axis slide rails (13), the two Z-axis slide rails (13) are oppositely distributed and fixedly connected through a connecting plate (14), the Y-axis slide block set comprises two Y-axis slide blocks (15), the two Y-axis slide blocks (15) are oppositely fixedly installed on one end of the two Z-axis slide rails (13) and are respectively in sliding connection with the Y-axis moving mechanism (4), the Z-axis driving part comprises a Z-axis motor (16) and a Z-axis screw rod (17), the Z-axis screw rod (17) is installed on one side of any one of the Z-axis slide rails (13) and can rotate around the axis, a Z-axis nut (18) is threadedly sleeved on the Z-axis screw rod (17), and the Z-axis slide block set comprises two Z-axis slide blocks (19), the two Z-axis slide blocks (19) are respectively slidably installed on the two Z-axis slide rails (13), and any one of the Z-axis slide blocks (19) is fixedly connected with the Z-axis nut (18).

4. The cantilevered concrete 3D printing device according to claim 3, characterized in that: The Y-axis moving mechanism (4) comprises a Y-axis slide rail (20), a Y-axis motor (21) and a Y-axis screw rod (22), the Y-axis slide rail (20) is installed on the X-axis moving mechanism (3), and the two Y-axis slide blocks (15) are respectively in sliding connection with the Y-axis slide rail (20), the Y-axis screw rod (22) is installed on the Y-axis slide rail (20) and can rotate around the axis, a Y-axis nut (23) is threadedly sleeved on the Y-axis screw rod (22), the connecting plate (14) is fixedly connected with the Y-axis nut (23), and the Y-axis motor (21) is fixedly installed on the Y-axis slide rail (20), the driving end of the Y-axis motor (21) extends along the axis of the Y-axis screw rod (22) and is fixedly connected with one end of the Y-axis screw rod (22).

5. The cantilevered concrete 3D printing device according to claim 3, characterized in that: The other end of the two Z-axis sliding rails (13) is provided with a U-shaped frame (6), the other end of the two Z-axis sliding rails (13) extends into the U-shaped frame (6) from the open end of the U-shaped frame (6), penetrates the closed end of the U-shaped frame (6) respectively, and is in sliding fit with the closed end of the U-shaped frame (6) respectively; the two Z-axis sliding blocks (19) are oppositely distributed on the side, away from each other, of the two Z-axis sliding rails (13), and are fixedly connected with the two sides of the open end of the U-shaped frame (6) respectively.

6. The cantilevered concrete 3D printing device according to any one of claims 1-5, characterized in that: The X-axis moving mechanism (3) comprises an X-axis driving member and an X-axis sliding rail set, the X-axis sliding rail set is installed on the rack (1), and is in sliding connection with the Y-axis moving mechanism (4) through an X-axis sliding block set; the X-axis driving member is installed on the X-axis sliding rail set and is in transmission connection with the X-axis sliding block set.

7. The cantilevered concrete 3D printing device according to claim 6, characterized in that: The X-axis sliding rail set comprises two X-axis sliding rails (24), and the two X-axis sliding rails (24) are oppositely installed on the rack (1) in an up-down mode; the X-axis sliding block set comprises two X-axis sliding blocks (25), and the two X-axis sliding blocks (25) are oppositely installed on the two X-axis sliding rails (24) in a sliding mode and are fixedly connected with the two ends of the Y-axis moving mechanism (4) respectively; the X-axis driving member is in transmission connection with any one of the X-axis sliding blocks (25).

8. The cantilevered concrete 3D printing device according to claim 7, characterized in that: The X-axis driving member comprises an X-axis motor (26) and an X-axis lower lead screw (27), the X-axis lower lead screw (27) is installed on the rack (1) and can rotate around its own axis, an X-axis lower nut (28) is threadedly sleeved on the X-axis lower lead screw (27), and the X-axis lower nut (28) is fixedly connected with any one of the X-axis sliding blocks (25); the X-axis motor (26) is fixedly installed on the rack (1), the driving end of the X-axis motor (26) extends along the axis of the X-axis lower lead screw (27) and is fixedly connected with one end of the X-axis lower lead screw (27).

9. The cantilevered concrete 3D printing device according to claim 8, characterized in that: The X-axis driving member further comprises an X-axis upper lead screw (29), the X-axis upper lead screw (29) is installed on the rack (1), is located above the X-axis lower lead screw (27) and is parallel to the X-axis lower lead screw (27); the X-axis upper lead screw (29) can rotate around its own axis, an X-axis upper nut (30) is threadedly sleeved on the X-axis upper lead screw (29), and the X-axis upper nut (30) is fixedly connected with the other X-axis sliding block (25); a synchronous wheel (31) is coaxially and fixedly sleeved on the same end of the X-axis upper lead screw (29) and the X-axis lower lead screw (27), and the two synchronous wheels (31) are in transmission connection through a synchronous belt (12).

10. The cantilevered concrete 3D printing device according to any one of claims 1-5, characterized in that: The rack (1) comprises a base (7) and an upper support (8), a plurality of Forma wheels (9) are uniformly and spacedly installed on the bottom of the base (7); the upper support (8) is located above the base (7), and the two ends of the upper support (8) are connected with the two ends of the base (7) through top screws (10) respectively; the X-axis moving mechanism (3) is installed on the base (7) and the upper support (8).

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