3D ultra-high performance concrete printing device and printing method thereof

Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D ultra-high performance concrete printing device and a printing method thereof. When an existing device is used, part of slurry remains at a nozzle, and when a spray head moves to a next position for printing, the part of residual slurry falls to other printing areas in the moving process, so that the overall printing effect of works is influenced, and the printing efficiency is reduced; comprising a printing nozzle, a conveying pipeline is arranged on the printing nozzle, and the conveying pipeline penetrates through a linkage support to be connected with a storage tank on a printer body; the linkage support is connected with the printing nozzle and a printing assembly on the printer body and used for installing the printing nozzle on the printing assembly. The linkage support is provided with a rotation position flow blocking mechanism. And through the rotation flow blocking mechanism, residual concrete slurry falls into the movement blocking half box, the overall effect of work printing is prevented from being affected, and therefore the 3D printing efficiency is improved, and the success rate of 3D printing is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing, and specifically relates to a 3D ultra-high performance concrete printing device and a printing method thereof. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers; it is often used to make models in the fields of mold manufacturing, industrial design, and later gradually used for the direct manufacturing of some products; while 3D concrete printing uses concrete as the material.

[0003] When the existing device is in use, the concrete slurry is generally squeezed out through the printing nozzle for printing operation; however, some slurry will still remain at the nozzle, and when the nozzle moves to the next position for printing, the remaining slurry will fall to other printing areas during the movement, thereby affecting the overall effect of the printing of the work, causing the printing operation to fail, thereby reducing the printing efficiency. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a 3D concrete printing device and a printing method thereof, which effectively solve the problems in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a 3D ultra-high performance concrete printing device, comprising a printing nozzle, the printing nozzle is provided with a delivery pipeline, the delivery pipeline passes through a linkage bracket and is connected to a material storage tank on a printer body;

[0006] The linkage bracket is connected to the print head and the printing assembly on the printer body, and is used to install the print head on the printing assembly; the linkage bracket is provided with a rotational flow blocking mechanism, which prevents the residual slurry from dripping onto the printed object when the print head moves;

[0007] The rotational flow blocking mechanism includes an installation square plate, and the installation square plate and the linkage bracket are connected by bolts; a driving motor is fixedly installed on the installation square plate, and a driving gear is provided on the output end of the driving motor, and the driving gear is meshed and connected with the linkage gear, and a linkage shaft is installed on the linkage gear, and the linkage shaft passes through the linkage cross block and is transmission-connected with the linkage bracket; the linkage cross block is connected to the blocking half box through a connecting plate, and a guide block is installed on the blocking half box, and a clearing and reciprocating component is provided on the guide block; a positioning block is installed on the blocking half box, and a lifting and decelerating unit is connected to the positioning block.

[0008] Preferably, the lifting and decelerating unit includes an actuating ring rod arranged on the positioning block, a plurality of gear teeth are arranged on the actuating ring rod, the gear teeth are meshingly connected with the first gear, a driving shaft is installed on the first gear, one end of the driving shaft is transmission-connected with the driving base, and the driving base is fixedly connected with the first base arranged on the linkage bracket.

[0009] Preferably, a trigger gear is installed on the other end of the driving shaft, the trigger gear is meshed and connected with the trigger rack, a number of directional slide rails are installed on the trigger rack, the directional slide rails are slidably connected to the directional slide box, the directional slide box and the driving base are fixedly connected through a connecting square seat; the trigger rack is provided with a special-shaped long rod, the special-shaped long rod is fixedly connected to the L-shaped frame plate, the L-shaped frame plate is connected to the auxiliary stabilizing unit; the L-shaped frame plate is provided with a buffer pad, the buffer pad is cooperatively connected to the blocking half box.

[0010] Preferably, the positioning block is slidably connected to the positioning ring rod, and both ends of the positioning ring rod are fixedly connected to the first base.

[0011] Preferably, the clearing and stopping reciprocating assembly includes an auxiliary rotating shaft arranged on the guide block, the auxiliary rotating shaft passes through the linkage bracket and is connected to the first bevel gear, the first bevel gear is meshed and connected to the second bevel gear, and the second bevel gear is provided with an active rotating shaft, the active rotating shaft passes through the second base provided on the linkage bracket and is fixedly connected to the cam, the cam is cooperatively connected to the triggering square rod, and a limit block is symmetrically installed on the triggering square rod, the limit block is slidably connected to the limit rod, one end of the limit rod is fixedly connected to the limit circular plate, and the other end is fixedly connected to the limit base; one of the limit bases is fixedly connected to the second base, and the other limit base is fixedly connected to the linkage bracket; a first spring is sleeved on the limit rod, one end of the first spring is fixedly connected to the limit circular plate, and the other end is fixedly connected to the limit block.

[0012] Preferably, the auxiliary stabilizing unit includes an L-rod arranged on an L-shaped frame plate, and the L-rod is connected to an extending and moving double-closing mechanism; the L-rod is provided with a first limit rod, and the first limit rod is slidably connected to a third base provided on the linkage bracket; the third base is provided with a moving contact piece, and the moving contact piece is cooperatively connected with a static contact piece provided on the first limit rod, and the contact between the static contact piece and the moving contact piece is coordinated with a driving motor through a controller provided on the linkage bracket.

[0013] Preferably, the extending and closing mechanism includes a double-sided bevel block arranged on the L-rod, the double-sided bevel block is connected to the two circular wheels, and the circular wheels are rotatably connected to the annular circular block; a driven rotating shaft is installed on the annular circular block, and the driven rotating shaft passes through the fourth base provided on the linkage bracket and is connected to the clockwork spring.

[0014] Preferably, an extension plate is installed on one of the limit blocks, an electric telescopic rod is fixed on the extension plate, and the electric telescopic rod is connected to the controller; an extension rod is installed on the output end of the electric telescopic rod, and a brush plate is connected to the extension rod, and the brush plate is connected to the discharge port of the print head.

[0015] Preferably, the annular circular block is fixedly connected to the displacement square plate through an annular long rod, and the displacement square plate is symmetrically provided with second limit rods, and several second limit rods are commonly connected to the bonding plate, and the bonding plate is provided with a rubber pad; a second spring is sleeved on the second limit rod, and one end of the second spring is fixedly connected to the bonding plate, and the other end is fixedly connected to the displacement square plate.

[0016] The present invention also provides a 3D ultra-high performance concrete printing method, comprising the following steps:

[0017] Step 1: When the printing nozzle of the device is used, it is installed on the linkage bracket, which is installed on the printing component on the printer body. As the printing component moves, the 3D printing operation is performed through the printing nozzle;

[0018] Step 2: Place the concrete slurry in the storage tank on the printer body, and connect the storage tank to the print head through a delivery pipe to facilitate the use of the print head; then start the drive motor so that the drive gear on the output end drives the linkage gear to rotate, thereby driving the linkage shaft to rotate;

[0019] Step 3: The linkage horizontal block on the linkage shaft drives the blocking half box to rotate, and the blocking half box rotates at the upper limit position of the linkage bracket through the guide block;

[0020] Step 4: At the same time, the blocking half box moves at the upper limit of the positioning ring rod through the guide block to prevent the blocking half box from dislocation, shaking, etc. during rotation, so that the blocking half box moves stably;

[0021] Step 5: Rotate the half-blocking box to a certain degree and move it below the discharge port of the print head, so that the remaining concrete slurry falls into the half-blocking box, thereby avoiding affecting the overall effect of the printing of the work.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) Start the driving motor, so that the driving gear on its output end meshes with the linkage gear to rotate, so that the linkage cross block on the linkage shaft drives the blocking half box to rotate, and the blocking half box moves at the upper limit of the linkage bracket through the auxiliary shaft on the guide block, and at the same time, the blocking half box moves at the upper limit of the positioning ring rod through the guide block, so as to avoid dislocation and shaking of the blocking half box during rotation, thereby improving the stability of the blocking half box during rotation; the blocking half box is rotated to a certain degree and moved below the discharge port of the printing nozzle, so as to avoid the shaking of the printing head caused by the printing component on the 3D printer when moving, causing the concrete slurry remaining on the printing nozzle to fall to other printing areas or printed objects, so that even if the remaining concrete slurry falls, it will fall into the blocking half box, thereby avoiding affecting the overall effect of the work printing, thereby improving the efficiency and success rate of 3D printing; at the same time, the blocking half box will not affect the normal use of the printing nozzle when it is not working;

[0024] (2) The cam rotates and reciprocates to contact the triggering square rod, and the triggering square rod moves reciprocatingly at the upper limit of the limit rod through the limit block, so that the first spring is constantly in a buffering and resetting state; and before the driving motor is started, the electric telescopic rod will work, so that the output end of the electric telescopic rod drives the brush plate to move downward, so that the brush plate moves to the height of the discharge port of the printing nozzle; when the triggering square rod reciprocates, it drives the brush plate to reciprocate, and the brush plate reciprocates to clean the discharge port of the printing nozzle, thereby cleaning the concrete remaining on the surface of the printing nozzle, preventing the residual slurry from falling to other printing areas during movement, and at the same time allowing the printing nozzle to keep a clean state when printing at the next position, preventing the concrete slurry from drying out during the movement and mixing with normal concrete to affect the printing quality, thereby improving the printing efficiency;

[0025] (3) When the operator uses the print head of the device to print a work, the operator installs it on the linkage bracket, which is installed on the printing component on the printer body. As the printing component moves, the 3D printing operation is performed through the print head; the required concrete slurry is placed in the storage tank on the printer body, and the storage tank is connected to the print head through a conveying pipeline, which is convenient for the use of the print head;

[0026] (4) The two beveled edges contact the two round wheels, so that the circular block on the round wheel rotates at the upper limit of the fourth base through the driven shaft, and the spring is in a buffering state, so that the two displacement square plates move toward each other, and the bonding plate is driven to move through the second limit rod, so that the rubber pad on the bonding plate is connected to the printing nozzle. The friction force when the bonding plate and the printing nozzle are connected is increased by the rubber pad. At the same time, the buffering force brought by the second spring offsets the impact force caused by the movement of the printing nozzle, thereby avoiding damage to the printing nozzle and prolonging its service life; when the device is not printing, the concrete slurry needs to maintain the fluidity of the slurry at all times to avoid condensation and causing problems with the device; through the above description, the stability of the printing nozzle is improved, and the dislocation of the printing nozzle is avoided to affect the next use of the device, so that the device needs to be calibrated frequently;

[0027] (5) The trigger gear on the driving shaft rotates and engages with the trigger rack to move, so that it moves within the directional slide box through a plurality of directional slide rails, and drives the L-shaped frame plate to move toward the direction of the print head through the special-shaped long rod, so that the L-shaped frame plate moves toward the direction of rotation of the blocking half box, so that the right angle side of the blocking half box and the right angle side of the L-shaped frame plate are in a straight line, and then the blocking half box is connected to the buffer pad provided on the L-shaped frame plate, thereby reducing the impact force generated when the blocking half box contacts the L-shaped frame plate, and at the same time, the blocking half box can be lifted to provide a supporting force for the blocking half box, thereby improving the stability of the blocking half box when in use, avoiding excessive pressure damage caused by excessive accumulation of concrete in the blocking half box, and thus improving the service life of the device;

[0028] (6) When the L-shaped frame plate moves, it is limited and moved on the third base by the first limit rod on the L-rod, supporting the L-shaped frame plate to prevent it from being dislocated during movement, so that the L-shaped frame plate can be balanced during movement. At the same time, when the static contact piece on the first limit rod contacts the dynamic contact piece on the third base during movement, it indicates that the lifting contact buffer unit and the rotation flow blocking mechanism have moved into place, so that a signal is sent to the controller, thereby automatically shutting down the drive motor, avoiding the operator from having to stare at the device while it is working. The operation is automated and the operator's workload is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] In the attached picture:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is an exploded view of the installation of the square plate of the present invention;

[0033] Figure 3 It is an exploded view of the rotational flow blocking mechanism of the present invention;

[0034] Figure 4 It is a schematic diagram of the linkage support structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the L-shaped frame structure of the present invention;

[0036] Figure 6 It is a schematic diagram of the second base structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the directional slide rail structure of the present invention;

[0038] Figure 8 This is a schematic diagram of the partially enlarged structure of location A of the present invention;

[0039] Fig. 9 This is a schematic diagram of the brush plate structure of the present invention;

[0040] Fig.10 This is a schematic diagram of the structure of the extending and moving double-closing mechanism of the present invention;

[0041] In the figure: 1, print head; 2, conveying pipeline; 3, linkage bracket; 4, installation square plate; 5, bolt; 6, drive motor; 7, drive gear; 8, linkage gear; 9, linkage shaft; 10, linkage cross block; 11, blocking half box; 12, guide block; 13, positioning block; 14, different ring rod; 15, gear; 16, first gear; 17, drive shaft; 18, drive base; 19, first base; 20, touch gear; 21, touch rack; 22, directional slide rail; 23, directional slide box; 24, connecting square seat; 25, special-shaped long rod; 26, L-shaped frame plate; 27, buffer pad; 28, positioning ring rod; 29, auxiliary shaft; 30, first bevel gear; 3 1. Second bevel gear; 32. Active rotating shaft; 33. Second base; 34. Cam; 35. Touch square rod; 36. Limit block; 37. Limit rod; 38. Limit circular plate; 39. Limit base; 40. First spring; 41. L rod; 42. First limit rod; 43. Third base; 44. Moving contact piece; 45. Static contact piece; 46. Controller; 47. Double-sided inclined block; 48. Round wheel; 49. Circular moving block; 50. Driven rotating shaft; 51. Fourth base; 52. Clockwork spring; 53. Extension plate; 54. Electric telescopic rod; 55. Extension rod; 56. Brush plate; 57. Displacement square plate; 58. Second limit rod; 59. Laminating plate; 60. Rubber pad; 61. Second spring. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] Example, by Figures 1 to 10 The present invention comprises a print head 1, on which a delivery pipe 2 is provided, which passes through a linkage bracket 3 and is connected to a material storage tank on a printer body; the linkage bracket 3 is connected to the print head 1 and a printing assembly on the printer body, and is used to install the print head 1 on the printing assembly; the linkage bracket 3 is provided with a rotational flow blocking mechanism, which prevents the residual slurry of the print head 1 from dripping onto the printed object when the print head 1 moves; the rotational flow blocking mechanism comprises a mounting square plate 4, and the mounting square plate 4 and the linkage bracket 3 are connected by bolts 5; a driving motor 6 is fixedly installed on the mounting square plate 4 , a driving gear 7 is provided on the output end of the driving motor 6, the driving gear 7 is meshed with the linkage gear 8, a linkage shaft 9 is installed on the linkage gear 8, the linkage shaft 9 passes through the linkage cross block 10 and is transmission-connected with the linkage bracket 3; the linkage cross block 10 is connected with the blocking half box 11 through a connecting plate, the blocking half box 11 is installed with a guide block 12, and the guide block 12 is provided with a clearing and reciprocating assembly; a positioning block 13 is installed on the blocking half box 11, and a lifting and slowing unit is connected to the positioning block 13; the positioning block 13 is slidably connected with the positioning ring rod 28, and both ends of the positioning ring rod 28 are fixedly connected with the first base 19;

[0044] When the operator uses the print head 1 of the device to print works, he installs it on the linkage bracket 3, and the linkage bracket 3 is installed on the printing component on the printer body. As the printing component moves, the 3D printing operation is performed through the print head 1; the required concrete slurry is placed in the storage tank on the printer body, and the storage tank is connected to the print head 1 through the conveying pipe 2 to facilitate the use of the print head 1; and when the print head 1 finishes printing in this area and moves to the next area to print, some slurry will adhere to the outlet of the print head 1. At this time, by starting the drive motor 6, the drive gear 7 on the output end engages the linkage gear 8 to rotate, and then the linkage shaft 9 rotates, and the linkage cross block 10 on the linkage shaft 9 drives the blocking half box 11 to rotate, and the blocking half box 11 passes through the auxiliary shaft on the guide block 12 29 is limited and moved on the linkage bracket 3, and at the same time, the blocking half box 11 is limited and moved on the positioning ring rod 28 through the guide block 12, so as to avoid dislocation, shaking and the like of the blocking half box 11 during rotation, thereby improving the stability of the blocking half box 11 during rotation; the blocking half box 11 is rotated to a certain degree and moved below the discharge port of the printing nozzle 1, so as to avoid the shaking and the like caused by the printing component on the 3D printer when the printing nozzle 1 moves, causing the concrete slurry remaining on the printing nozzle 1 to fall to other printing areas or printed objects, so that even if the remaining concrete slurry falls, it will fall into the blocking half box 11, thereby avoiding affecting the overall effect of the printing of the work, and improving the efficiency and success rate of 3D printing; at the same time, the blocking half box 11 will not affect the normal use of the printing nozzle 1 when it is not working.

[0045] The lifting and decelerating unit of this embodiment includes an actuating ring rod 14 arranged on the positioning block 13, a plurality of gear teeth 15 are arranged on the actuating ring rod 14, the gear teeth 15 are meshingly connected with a first gear 16, a driving shaft 17 is installed on the first gear 16, one end of the driving shaft 17 is transmission-connected with a driving base 18, and the driving base 18 is fixedly connected with a first base 19 arranged on the linkage bracket 3; a trigger gear 20 is installed on the other end of the driving shaft 17, and the trigger gear 20 is meshingly connected with the contact A movable rack 21 is provided with a plurality of directional slide rails 22 on the trigger rack 21, the directional slide rails 22 are slidably connected with the directional slide box 23, and the directional slide box 23 is fixedly connected with the driving base 18 through a connecting square seat 24; a special-shaped long rod 25 is provided on the trigger rack 21, the special-shaped long rod 25 is fixedly connected with the L-shaped frame plate 26, and the L-shaped frame plate 26 is connected with the auxiliary dynamic stabilizing unit; a buffer pad 27 is provided on the L-shaped frame plate 26, and the buffer pad 27 is connected with the blocking half box 11;

[0046] When the positioning block 13 rotates, it drives the several gear teeth 15 on the moving ring rod 14 to rotate with the linkage shaft 9 as the center, thereby driving the first gear 16 to rotate, so that the trigger gear 20 on the driving shaft 17 rotates and engages with the trigger rack 21 to move, so that it moves within the directional slide box 23 through several directional slide rails 22, and drives the L-shaped frame plate 26 to move toward the direction of the print nozzle 1 through the special-shaped long rod 25, so that the L-shaped frame plate 26 moves toward the direction of the rotation of the blocking half box 11, so that the blocking half box 11 The right-angled side is in a straight line with the right-angled side of the L-shaped frame plate 26, so that the blocking half box 11 is connected to the buffer pad 27 provided on the L-shaped frame plate 26, thereby reducing the impact force generated when the blocking half box 11 contacts the L-shaped frame plate 26, and at the same time, the blocking half box 11 can be lifted and a supporting force can be provided to the blocking half box 11, thereby improving the stability of the blocking half box 11 during use, avoiding excessive pressure damage caused by excessive accumulation of concrete in the blocking half box 11, thereby improving the service life of the device.

[0047] The clearing and reciprocating assembly of the present embodiment includes an auxiliary rotating shaft 29 arranged on the guide block 12, the auxiliary rotating shaft 29 passes through the linkage bracket 3 and is connected with the first bevel gear 30, the first bevel gear 30 is meshed and connected with the second bevel gear 31, and the second bevel gear 31 is provided with an active rotating shaft 32, the active rotating shaft 32 passes through the second base 33 provided on the linkage bracket 3 and is fixedly connected with the cam 34, the cam 34 is matched and connected with the triggering square rod 35, and a limiting block 36 is symmetrically installed on the triggering square rod 35, the limiting block 36 is slidably connected with the limiting rod 37, one end of the limiting rod 37 is fixedly connected with the limiting circular plate 38, and the other end is fixedly connected with the limiting base 39 The limiting base 39 is fixedly connected to the second base 33, and the other limiting base 39 is fixedly connected to the linkage bracket 3; the limiting rod 37 is sleeved with a first spring 40, one end of the first spring 40 is fixedly connected to the limiting circular plate 38, and the other end is fixedly connected to the limiting block 36; an extension plate 53 is installed on one of the limiting blocks 36, and an electric telescopic rod 54 is fixedly provided on the extension plate 53, and the electric telescopic rod 54 is connected to the controller 46; an extension rod 55 is installed on the output end of the electric telescopic rod 54, and a brush plate 56 is connected to the extension rod 55, and the brush plate 56 is connected to the discharge port of the print head 1;

[0048] When the blocking half box 11 on the rotation blocking mechanism rotates, it drives the auxiliary rotating shaft 29 to rotate at the upper limit position of the linkage bracket 3 through the guide block 12, so that the first bevel gear 30 drives the meshing second bevel gear 31 to rotate, so that the cam 34 rotates and reciprocates to contact the touch square rod 35, and the touch square rod 35 moves reciprocatingly at the upper limit position of the limit rod 37 through the limit block 36, so that the first spring 40 is constantly in a buffering and resetting state; and before the driving motor 6 is started, the electric telescopic rod 54 will work, so that the output end of the electric telescopic rod 54 drives the brush plate 56 to move downward, so that The brush plate 56 moves to the height of the discharge port of the print nozzle 1; when the square rod 35 is triggered to move back and forth, the brush plate 56 is driven to move back and forth, and the brush plate 56 reciprocates to clean the discharge port of the print nozzle 1, thereby cleaning the concrete remaining on the surface of the print nozzle 1 to prevent the residual slurry from falling to other printed areas during movement, and at the same time, the print nozzle 1 can maintain a clean state when printing at the next position, thereby preventing the concrete slurry from drying out during the movement and mixing with normal concrete to affect the printing quality, thereby improving the printing efficiency.

[0049] The auxiliary stabilizing unit of this embodiment includes an L-rod 41 arranged on the L-shaped frame plate 26, and the L-rod 41 is connected with an extension and movement double-closing mechanism; the L-rod 41 is provided with a first limit rod 42, and the first limit rod 42 is slidably connected with a third base 43 provided on the linkage bracket 3; the third base 43 is provided with a moving contact piece 44, and the moving contact piece 44 is connected with a stationary contact piece 45 provided on the first limit rod 42, and the contact between the stationary contact piece 45 and the moving contact piece 44 is connected with the driving motor 6 through a controller 46 provided on the linkage bracket 3;

[0050] When the L-shaped frame plate 26 moves, it moves within the upper limit of the third base 43 through the first limit rod 42 on the L rod 41, supporting the L-shaped frame plate 26 to avoid dislocation during movement, so that the L-shaped frame plate 26 can be balanced during movement. At the same time, when the static contact piece 45 on the first limit rod 42 contacts the dynamic contact piece 44 on the third base 43 during movement, it indicates that the lifting contact buffer unit and the rotation flow blocking mechanism have moved into place, so that a signal is sent to the controller 46, thereby automatically shutting down the drive motor 6, avoiding the operator from having to stare at the device while it is working, automating the operation and reducing the operator's workload.

[0051] The extending and closing mechanism of this embodiment includes a double-sided inclined block 47 arranged on the L rod 41, and the double-sided inclined block 47 is connected with two round wheels 48, and the round wheel 48 is rotatably connected with the ring-moving circular block 49; a driven rotating shaft 50 is installed on the ring-moving circular block 49, and the driven rotating shaft 50 passes through the fourth base 51 provided on the linkage bracket 3 and is connected with the clockwork spring 52; the ring-moving circular block 49 is fixedly connected with the displacement square plate 57 through an annular long rod, and the displacement square plate 57 is symmetrically provided with second limiting rods 58, and a plurality of second limiting rods 58 are connected to the bonding plate 59 together, and the bonding plate 59 is provided with a rubber pad 60; the second limiting rod 58 is sleeved with a second spring 61, and one end of the second spring 61 is fixedly connected with the bonding plate 59, and the other end is fixedly connected with the displacement square plate 57;

[0052] When the L rod 41 on the auxiliary stabilizing unit moves, it drives the bilateral bevel block 47 to move, so that its two bevel edges contact the two round wheels 48, so that the annular round block 49 on the round wheel 48 rotates at the upper limit position on the fourth base 51 through the driven rotating shaft 50, and the clockwork spring 52 is in a buffering state, so that the two displacement square plates 57 move toward each other, and the bonding plate 59 is driven to move by the second limit rod 58, so that the rubber pad 60 on the bonding plate 59 is connected to the printing nozzle 1. The friction force when the bonding plate 59 and the printing nozzle 1 are connected is increased by the provision of the rubber pad 60. At the same time, the buffering force brought by the second spring 61 offsets the impact force caused by the movement of the printing nozzle 1, thereby avoiding damage to the printing nozzle 1 and prolonging its service life. When the device is not printing, the concrete slurry needs to maintain the fluidity of the slurry at all times to avoid condensation and problems with the device. Through the above description, the stability of the printing nozzle 1 is improved, and the dislocation of the printing nozzle 1 is avoided to affect the next use of the device, so that the device needs to be calibrated frequently.

[0053] The present invention also provides a 3D concrete printing method, comprising the following steps:

[0054] Step 1: When the printing nozzle 1 of the device is used, it is installed on the linkage bracket 3. The linkage bracket 3 is installed on the printing component on the printer body. As the printing component moves, the 3D printing operation is performed through the printing nozzle 1;

[0055] Step 2: Place the concrete slurry in the storage tank on the printer body, and connect the storage tank to the print head 1 through the delivery pipe 2 to facilitate the use of the print head 1; then start the drive motor 6, so that the drive gear 7 on the output end drives the linkage gear 8 to rotate, and drives the linkage shaft 9 to rotate;

[0056] Step 3: The linkage horizontal block 10 on the linkage shaft 9 drives the blocking half box 11 to rotate, and the blocking half box 11 rotates at the upper limit position of the linkage bracket 3 through the guide block 12;

[0057] Step 4: At the same time, the blocking half box 11 moves within the upper limit of the positioning ring rod 28 through the guide block 12 to prevent the blocking half box 11 from dislocation, shaking, etc. during rotation, so that the blocking half box 11 moves stably;

[0058] Step 5: The blocking half box 11 is rotated to a certain degree and moved below the discharge port of the printing nozzle 1, so that the remaining concrete slurry falls into the blocking half box 11, thereby avoiding affecting the overall effect of the work printing.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D ultra-high performance concrete printing device, characterized in that: The printer comprises a printing nozzle (1), wherein a delivery pipe (2) is provided on the printing nozzle (1), and the delivery pipe (2) passes through a linkage bracket (3) and is connected to a material storage tank on a printer body; The linkage bracket (3) is connected to the print head (1) and the printing assembly on the printer body, and is used to install the print head (1) on the printing assembly; the linkage bracket (3) is provided with a rotational flow blocking mechanism, which prevents the residual slurry of the print head (1) from dripping onto the printed object when the print head (1) moves; The rotational flow blocking mechanism comprises a mounting square plate (4), wherein the mounting square plate (4) and the linkage bracket (3) are connected by bolts (5); a driving motor (6) is fixedly mounted on the mounting square plate (4), a driving gear (7) is arranged on the output end of the driving motor (6), the driving gear (7) is meshingly connected with the linkage gear (8), a linkage rotating shaft (9) is mounted on the linkage gear (8), the linkage rotating shaft (9) passes through the linkage cross block (10) and is transmission-connected with the linkage bracket (3); the linkage cross block (10) is connected to the blocking half box (11) through a connecting plate, the blocking half box (11) is mounted with a guide square block (12), and a clearing and stopping reciprocating assembly is arranged on the guide square block (12); a positioning block (13) is mounted on the blocking half box (11), and a lifting and slowing unit is connected to the positioning block (13).

2. A 3D ultra-high performance concrete printing device according to claim 1, characterized in that: The lifting and slow-moving unit comprises an actuating ring rod (14) arranged on a positioning block (13), a plurality of gear teeth (15) being arranged on the actuating ring rod (14), the gear teeth (15) being meshingly connected with a first gear (16), a driving shaft (17) being mounted on the first gear (16), one end of the driving shaft (17) being transmission-connected with a driving base (18), and the driving base (18) being fixedly connected with a first base (19) arranged on the linkage bracket (3).

3. A 3D ultra-high performance concrete printing device according to claim 2, characterized in that: A trigger gear (20) is mounted on the other end of the driving shaft (17), the trigger gear (20) is meshed with a trigger rack (21), a plurality of directional slide rails (22) are mounted on the trigger rack (21), the directional slide rails (22) are slidably connected to a directional slide box (23), the directional slide box (23) and the driving base (18) are fixedly connected via a connecting square seat (24); a special-shaped long rod (25) is mounted on the trigger rack (21), the special-shaped long rod (25) is fixedly connected to an L-shaped frame plate (26), the L-shaped frame plate (26) is connected to an auxiliary stabilizing unit; a buffer pad (27) is mounted on the L-shaped frame plate (26), the buffer pad (27) is cooperatively connected to the blocking half box (11).

4. A 3D ultra-high performance concrete printing device according to claim 1, characterized in that: The positioning block (13) is slidably connected to the positioning ring rod (28), and the two ends of the positioning ring rod (28) are fixedly connected to the first base (19).

5. The 3D ultra-high performance concrete printing device according to claim 1, characterized in that: The clearing and stopping reciprocating assembly comprises an auxiliary rotating shaft (29) arranged on the guide block (12); the auxiliary rotating shaft (29) passes through the linkage bracket (3) and is connected to the first bevel gear (30); the first bevel gear (30) is meshedly connected to the second bevel gear (31); the second bevel gear (31) is provided with an active rotating shaft (32); the active rotating shaft (32) passes through a second base (33) provided on the linkage bracket (3) and is fixedly connected to a cam (34); the cam (34) is cooperatively connected to a triggering square rod (35); a limit block (32) is symmetrically installed on the triggering square rod (35); 36), a limit block (36) is slidably connected to a limit rod (37), one end of the limit rod (37) is fixedly connected to a limit circular plate (38), and the other end is fixedly connected to a limit base (39); one limit base (39) is fixedly connected to a second base (33), and the other limit base (39) is fixedly connected to a linkage bracket (3); a first spring (40) is sleeved on the limit rod (37), one end of the first spring (40) is fixedly connected to a limit circular plate (38), and the other end is fixedly connected to the limit block (36).

6. A 3D ultra-high performance concrete printing device according to claim 3, characterized in that: The auxiliary stabilizing unit comprises an L-rod (41) arranged on the L-shaped frame plate (26), and the L-rod (41) is connected with an extension and closing mechanism; the L-rod (41) is provided with a first limiting rod (42), and the first limiting rod (42) is slidably connected with a third base (43) provided on the linkage bracket (3); the third base (43) is provided with a moving contact piece (44), and the moving contact piece (44) is connected in cooperation with a stationary contact piece (45) provided on the first limiting rod (42), and the contact between the stationary contact piece (45) and the moving contact piece (44) is connected in cooperation with a driving motor (6) through a controller (46) provided on the linkage bracket (3).

7. A 3D ultra-high performance concrete printing device according to claim 6, characterized in that: The extending and closing mechanism comprises a double-sided inclined block (47) arranged on the L rod (41), the double-sided inclined block (47) is connected to two round wheels (48) in cooperation, and the round wheels (48) are rotatably connected to a circular moving block (49); a driven rotating shaft (50) is installed on the circular moving block (49), and the driven rotating shaft (50) passes through a fourth base (51) provided on the linkage bracket (3) and is connected to a spring spring (52).

8. The 3D concrete printing device according to claim 5, characterized in that: An extension plate (53) is installed on one of the limit blocks (36), an electric telescopic rod (54) is fixedly provided on the extension plate (53), and the electric telescopic rod (54) is connected to the controller (46); an extension rod (55) is installed on the output end of the electric telescopic rod (54), and a brush plate (56) is connected to the extension rod (55), and the brush plate (56) is connected to the discharge port of the print head (1).

9. A 3D ultra-high performance concrete printing device according to claim 7, characterized in that: The annular moving block (49) is fixedly connected to the displacement square plate (57) through an annular long rod. The displacement square plate (57) is symmetrically provided with second limiting rods (58). A plurality of second limiting rods (58) are commonly connected to a bonding plate (59). A rubber pad (60) is provided on the bonding plate (59). A second spring (61) is sleeved on the second limiting rod (58). One end of the second spring (61) is fixedly connected to the bonding plate (59), and the other end is fixedly connected to the displacement square plate (57).

10. A 3D ultra-high performance concrete printing method, using the 3D concrete printing device according to any one of claims 1 to 9, characterized in that: Includes steps: Step 1: When the printing nozzle (1) of the device is used, it is installed on the linkage bracket (3), and the linkage bracket (3) is installed on the printing component on the printer body. As the printing component moves, the 3D printing operation is performed through the printing nozzle (1); Step 2: Place concrete slurry in a storage tank on the printer body, and connect the storage tank to the print head (1) through a delivery pipe (2) to facilitate the use of the print head (1); then start the drive motor (6) so that the drive gear (7) on the output end drives the linkage gear (8) to rotate, thereby driving the linkage shaft (9) to rotate; Step 3: The linkage horizontal block (10) on the linkage rotating shaft (9) drives the blocking half box (11) to rotate, and the blocking half box (11) rotates at the upper limit position of the linkage bracket (3) through the guide block (12); Step 4: At the same time, the blocking half box (11) moves within the upper limit position on the positioning ring rod (28) through the guide block (12), so as to prevent the blocking half box (11) from being dislocated or shaking during rotation, thereby making the blocking half box (11) move stably; Step 5: The blocking half box (11) is rotated to a certain degree and moved below the discharge port of the printing nozzle (1), so that the remaining concrete slurry falls into the blocking half box (11), thereby avoiding affecting the overall effect of the printing of the work.

Images