Multifunctional concrete 3D printing spray head allowing steel bar section to be inserted

Abstract

The utility model relates to the technical field of printing nozzles, and discloses a multifunctional concrete 3D printing nozzle capable of being inserted with a steel bar section, the multifunctional concrete 3D printing nozzle comprises an upper end shell and a lower end shell, the lower end of the lower end shell is connected with a printing stock bin through a connecting piece, and a hollow auger is arranged in the printing stock bin; the upper end of the hollow packing auger penetrates through the lower end shell, extends into the lower end shell and is rotationally connected with the lower end shell, a rotary driving mechanism is arranged on the periphery of the hollow packing auger, a printing nozzle is installed at the lower end of the printing bin through an installation mechanism, an upper cover plate is arranged above the upper end shell, a support is arranged on the upper cover plate, and the upper end of the hollow packing auger is fixedly connected with the lower end shell. According to the device, through the arrangement of the rebar storage bin and the feeder spline shaft, rebar sections in the rebar storage bin can be automatically sprayed out from the printing nozzle, the construction strength of printing is improved, and the problems that in the prior art, a certain number of rebars are needed to improve the strength, and if vertical rebars are manually inserted, time and labor are wasted, inconvenience is caused, and the insertion efficiency is extremely low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing nozzles, and in particular to a multifunctional concrete 3D printing nozzle capable of inserting steel bar segments. Background Art

[0002] With the continuous advancement of 3D printing technology, it has been fully developed in various industries. The application of 3D printing technology in construction has the advantages of green energy saving, efficient molding and building environmental protection. Therefore, the development of this technology has been paid attention to by related industries at home and abroad. Construction 3D printing adopts a process similar to FDM (fused deposition modeling) to extrude and mold printing materials similar to concrete, stack them layer by layer to form a three-dimensional solid house or component. The existing construction 3D printing system cannot automatically insert vertical steel bars, resulting in insufficient structural strength after printing, and the bonding between the two layers is easy to break. The construction strength of construction 3D printing cannot completely rely on the interlayer bonding force of the material, and a certain number of steel bars are required to increase the strength. If the vertical steel bars are inserted manually, it will not only be time-consuming and inconvenient, but also the insertion efficiency is extremely low. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and to propose a multifunctional concrete 3D printing nozzle capable of inserting steel bar segments.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment comprises an upper end shell and a lower end shell, wherein the lower end of the lower end shell is connected to a printing material bin through a connecting piece, a hollow auger is arranged in the printing material bin, and the upper end of the hollow auger penetrates the bottom of the lower end shell and extends into the lower end shell, and is rotatably connected to the bottom of the lower end shell, a rotary drive mechanism is arranged on one side of the hollow auger, and the driving end of the rotary drive mechanism is connected to the hollow auger, and a printing nozzle is installed at the lower end of the printing material bin through an installation mechanism;

[0006] An upper cover plate is arranged above the upper end shell, a bracket is arranged on the upper cover plate, a rib storage bin is installed on the bracket through a plug-in mechanism, an outlet is arranged at the lower end of the rib storage bin, a feeder shell is also arranged on the upper cover plate, a feeder inlet is arranged at the upper end of the feeder shell, a feeder outlet is arranged at the lower end of the feeder shell, and the outlet, feeder inlet and feeder outlet are located in corresponding positions, a stepper motor is arranged on one side of the feeder shell, and a driving end of the stepper motor penetrates the feeder The outer shell of the feeder is connected to a feeder flower shaft, and a plurality of grooves are arranged on the feeder flower shaft. A steel bar guide is arranged below the feeder outlet, and the steel bar guide passes through the top of the upper end shell and extends into the upper end shell. The other end of the steel bar guide is connected to a steel bar segment launching cavity, and the steel bar segment launching cavity is arranged in the upper end shell. The lower end of the steel bar segment launching cavity passes through the upper end shell and is communicated with the upper end of the hollow auger in the lower end shell. A steel bar segment launching driving mechanism is arranged on the periphery of the steel bar segment launching cavity.

[0007] Preferably, the mounting mechanism is a clamp, and a fixing hole and a threaded hole are respectively provided on both sides of the clamp, a bolt is provided on one side of the fixing hole, and the bolt passes through the fixing hole and is threadedly connected with the threaded hole.

[0008] Preferably, the rotary drive mechanism includes an extrusion motor, which is arranged on one side below the lower end shell, and the driving end of the extrusion motor passes through the lower end shell and is connected to a synchronous transmission mechanism, and the other end of the synchronous transmission mechanism is connected to the hollow auger.

[0009] Preferably, the synchronous transmission mechanism includes a driving wheel, a driven wheel, a synchronous belt and a tensioning sleeve, the driving wheel is connected to the driving end of the extrusion motor, the driven wheel is fixedly arranged on the outer periphery of the hollow auger, the driving wheel and the driven wheel are connected via a synchronous belt transmission, the driven wheel is connected to the hollow auger via a tensioning sleeve, and the driving wheel is connected to the driving end of the extrusion motor via a tensioning sleeve.

[0010] Preferably, the rebar segment launching drive mechanism includes an electromagnetic coil drive control unit, which is arranged on one side of the upper end shell, and the electromagnetic coil drive control unit is connected to the electromagnetic coil through a control processor, and the electromagnetic coil is arranged on the outer periphery of the rebar segment launching cavity, and an infrared sensor is arranged on one side of the inner wall of the rebar segment launching cavity, and the output end of the infrared sensor is connected to the electromagnetic coil drive control unit through the control processor.

[0011] Preferably, the connecting member includes an upper mounting plate and a lower mounting plate, both of which are provided with mounting grooves, the printing material bin is connected with the mounting groove on the upper mounting plate through the mounting groove on the lower mounting plate, the lower end shell is fixed to the upper mounting plate by bolts, and the hollow auger extends into the lower end shell through the mounting groove and is connected with the steel bar segment launching chamber.

[0012] Preferably, a feed pipe is provided on one side of the printing material bin, and the feed pipe is communicated with the inner cavity of the printing material bin.

[0013] Preferably, a nozzle cleaning mechanism is provided on one side of the printing material bin, and the nozzle cleaning mechanism includes an input pipe, a plurality of high-pressure nozzles and a nozzle connecting plate, the nozzle connecting plate is arranged on one side of the upper mounting plate and the lower mounting plate, and the nozzle connecting plate and the upper mounting plate and the lower mounting plate form a U-shaped groove, a mounting hole is provided on one side of the nozzle connecting plate, the input pipe is arranged on one side of the printing material bin, and the other end of the input pipe is arranged in the printing material bin through the mounting hole, the input pipe is provided with a plurality of output ends, a plurality of the output ends are connected with internal threaded pipes, a plurality of the high-pressure nozzles are connected with corresponding internal threaded pipes, and the high-pressure nozzles are arranged in the printing material bin.

[0014] Preferably, an ultrasonic sensor is provided in the lower end shell.

[0015] Preferably, the reinforcement storage bin is connected to the bracket via a buckle structure, the buckle structure comprises a slot, a buckle and a block, the block is arranged below the reinforcement storage bin, the slot is arranged above the bracket, one side of the block is arranged in the slot, the other end of the block is arranged in the buckle, the buckle is arranged on the other side of the bracket, and the block is L-shaped.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model is provided with an upper end shell and a lower end shell, and when in use, the hollow auger in the printing material bin can be driven to rotate by a rotating drive mechanism, and the material in the printing material bin is printed out through the printing nozzle. When it is necessary to install the steel bar segment, the steel bar segment needs to be put into the steel bar storage bin, and then the stepper motor is started to drive the feeder flower shaft to rotate. Because the steel bar segment falls into the groove from the bin outlet and the feeder inlet, the steel bar segment is then rotated to enter the steel bar guide through the outlet, and the horizontal steel bar segment is changed to fall vertically into the steel bar segment launching chamber, and then the steel bar segment is passed through the hollow auger through the steel bar segment launching drive mechanism and sprayed out from the printing nozzle. Compared with the prior art, the device can automatically spray the steel bar segment in the steel bar storage bin from the printing nozzle through the provided steel bar storage bin and feeder flower shaft, thereby increasing the construction strength of the printing, and solving the problem that a certain number of steel bars are required to increase the strength in the prior art, and manual insertion of vertical steel bars is not only time-consuming and laborious but also inconvenient, and the insertion efficiency is extremely low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of a multifunctional concrete 3D printing nozzle capable of inserting steel bar segments proposed by the utility model;

[0019] Figure 2 This is a front cross-sectional view of a multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment proposed by the utility model;

[0020] Figure 3 This is a side sectional view of a multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment proposed by the utility model;

[0021] Figure 4 This is a top view of a multifunctional concrete 3D printing nozzle that can be inserted with steel bar segments proposed by the utility model.

[0022] In the figure: 1. Upper shell; 2. Lower shell; 3. Printing bin; 4. Hollow auger; 5. Printing nozzle; 6. Upper cover; 7. Bracket; 8. Rebar storage bin; 9. Outlet; 10. Feeder shell; 11. Feeder inlet; 12. Rebar guide; 13. Stepper motor; 14. Feeder flower shaft; 15. Groove; 16. Feeder outlet; 17. Rebar segment launching chamber; 18. Hoop; 19. Fixing hole; 20. Threaded hole; 21. Bolt; 22. Extrusion Feeding motor; 23. Driving wheel; 24. Driven wheel; 25. Synchronous belt; 26. Electromagnetic coil drive control unit; 27. Electromagnetic coil; 28. Infrared sensor; 29. ​​Upper mounting plate; 30. Lower mounting plate; 31. Mounting slot; 32. Feed pipe; 33. Input pipe; 34. High-pressure nozzle; 35. Nozzle connecting plate; 36. Mounting hole; 37. Internal threaded pipe; 38. Ultrasonic sensor; 39. Slot; 40. Buckle; 41. Block; 42. Expansion sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0024] Reference Figures 1 to 4 A multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment comprises an upper shell 1 and a lower shell 2, wherein the lower end of the lower shell 2 is connected to a printing material bin 3 through a connecting piece, a hollow auger 4 is arranged in the printing material bin 3, and the upper end of the hollow auger 4 passes through the bottom of the lower shell 2 and extends into the lower shell 2, and is rotatably connected to the bottom of the lower shell 2, a rotary drive mechanism is arranged on one side of the hollow auger 4, and the driving end of the rotary drive mechanism is connected to the hollow auger 4, and a printing nozzle 5 is installed at the lower end of the printing material bin 3 through an installation mechanism;

[0025] An upper cover plate 6 is arranged above the upper end shell 1, a bracket 7 is arranged on the upper cover plate 6, a rib storage bin 8 is installed on the bracket 7 through a plug-in mechanism, an outlet 9 is arranged at the lower end of the rib storage bin 8, a feeder housing 10 is also arranged on the upper cover plate 6, a feeder inlet 11 is arranged at the upper end of the feeder housing 10, a feeder outlet 16 is arranged at the lower end of the feeder housing 10, and the positions of the outlet 9, the feeder inlet 11 and the feeder outlet 16 correspond to each other, a stepper motor 13 is arranged on one side of the feeder housing 10, and the driving end of the stepper motor 13 penetrates the feeder The device shell 10 is connected to a feeder flower shaft 14, and a plurality of grooves 15 are arranged on the feeder flower shaft 14. A steel bar guide 16 is arranged below the feeder outlet 16, and the steel bar guide 16 passes through the top of the upper end shell 1 and extends into the upper end shell 1. The other end of the steel bar guide 16 is connected to a steel bar segment launching chamber 17, and the steel bar segment launching chamber 17 is arranged in the upper end shell 1. The lower end of the steel bar segment launching chamber 17 passes through the upper end shell 1 and is communicated with the upper end of the hollow auger 4 in the lower end shell 2. A steel bar segment launching driving mechanism is arranged on the periphery of the steel bar segment launching chamber 17.

[0026] When the device is in use, the hollow auger 4 in the printing bin 3 can be driven to rotate by the rotary drive mechanism, and the material in the printing bin 3 can be printed out through the printing nozzle 5. When it is necessary to install the steel bar segment, the steel bar segment needs to be placed in the storage bin 8, and then the stepper motor 13 is started to drive the feeder flower shaft 14 to rotate. Because the steel bar segment falls into the groove 15 from the bin outlet 9 and the feeder inlet 11, the steel bar segment is then rotated by the feeder flower shaft 14 to enter the steel bar guide 16 through the outlet, and the horizontal steel bar segment is changed to fall vertically into the steel bar segment launching chamber 17, and then the steel bar segment is ejected from the printing nozzle 5 through the hollow auger 4 by the steel bar segment launching drive mechanism. Compared with the prior art, the device can automatically eject the steel bar segment in the storage bin 8 from the printing nozzle 5 through the provided steel bar storage bin 8 and the feeder flower shaft 14, thereby increasing the construction strength of the printing, and solving the problem that a certain number of steel bars are required to increase the strength in the prior art, and the manual insertion of vertical steel bars is not only laborious and inconvenient, but also has extremely low insertion efficiency.

[0027] Furthermore, the mounting mechanism is a clamp 18, and a fixing hole 19 and a threaded hole 20 are respectively provided on both sides of the clamp 18. A bolt 21 is provided on one side of the fixing hole 19, and the bolt 21 passes through the fixing hole 19 and is threadedly connected with the threaded hole 20. The tightness of the clamp 18 can be adjusted by screwing the bolt 21, so that different printing nozzles 5 can be replaced to adapt to different steel bar segments, and then the tightness of the clamp 18 is adjusted by screwing the bolt 21 to fix the printing nozzle 5.

[0028] Furthermore, the rotary drive mechanism includes an extrusion motor 22, which is arranged on one side below the lower end shell 2. The driving end of the extrusion motor 22 passes through the lower end shell 2 and is connected to a synchronous transmission mechanism. The other end of the synchronous transmission mechanism is connected to the hollow auger 4. The extrusion motor 22 is arranged to drive the synchronous belt transmission mechanism to move, thereby driving the hollow auger 4 to rotate, so that the printing material is extruded through the printing nozzle 5 to complete the printing work.

[0029] Furthermore, the synchronous transmission mechanism includes a driving wheel 23, a driven wheel 24, a synchronous belt 25 and a tensioning sleeve 42. The driving wheel 23 is connected to the driving end of the extrusion motor 22, and the driven wheel 24 is fixedly arranged on the outer periphery of the hollow auger 4. The driving wheel 23 and the driven wheel 24 are connected through the synchronous belt 25. The driven wheel 24 is connected to the hollow auger 4 through the tensioning sleeve 42. The driving wheel 23 is connected to the driving end of the extrusion motor 22 through the tensioning sleeve 42. By setting the driving wheel 23 and the driven wheel 24, the driving wheel 23 can be driven to rotate by the extrusion motor 22, and then the driven wheel 24 can be driven to rotate by the synchronous belt 25, so that the hollow auger 4 can be driven to rotate to achieve extrusion.

[0030] Furthermore, the rebar segment launching drive mechanism includes an electromagnetic coil drive control unit 26, which is arranged on one side of the upper end shell 1, and the electromagnetic coil drive control unit 26 is connected to an electromagnetic coil 27 through a control processor, and the electromagnetic coil 27 is arranged on the outer periphery of the rebar segment launching cavity 17, and an infrared sensor 28 is arranged on one side of the inner wall of the rebar segment launching cavity 17, and the output end of the infrared sensor 28 is connected to the electromagnetic coil drive control unit 26 through the control processor. When the infrared sensor 28 senses that a rebar segment has fallen, the electromagnetic coil drive control unit 26 controls the electromagnetic coil 27 to release an instantaneous large current, so that it generates a strong magnetic field to accelerate the rebar segment that has just fallen into the rebar segment launching cavity 17, so that it passes through the hollow auger 4 and is ejected from the printing nozzle 5.

[0031] Furthermore, the connecting member includes an upper mounting plate 29 and a lower mounting plate 30, and both the upper mounting plate 29 and the lower mounting plate 30 are provided with mounting grooves 31. The printing silo 3 is connected with the mounting grooves 31 on the upper mounting plate 29 through the mounting grooves 31 on the lower mounting plate 30. The lower end shell 2 is fixed to the upper mounting plate 29 by bolts 21. The hollow auger 4 extends into the lower end shell 2 through the mounting grooves 31 and is connected with the steel bar segment launching chamber 17. By providing the upper mounting plate 29 and the lower mounting plate 30, the lower end shell 2 can be fixed to the upper mounting plate 29 during use, and then the printing silo 3 is connected to the lower mounting plate 30 by welding, thereby realizing the installation of the lower end shell 2 and the printing silo 3.

[0032] Furthermore, a feed pipe 32 is provided on one side of the printing material bin 3 , and the feed pipe 32 is communicated with the inner cavity of the printing material bin 3 . Through the feed pipe 32 , the printing material can be transferred into the printing material bin 3 .

[0033] Further, the nozzle cleaning mechanism includes an input pipe 33, a plurality of high-pressure nozzles 34 and a nozzle connecting plate 35, the nozzle connecting plate 35 is arranged on one side of the upper mounting plate 29 and the lower mounting plate 30, and the nozzle connecting plate 35 forms a U-shaped groove with the upper mounting plate 29 and the lower mounting plate 30, and a mounting hole 36 is arranged on one side of the nozzle connecting plate 35, the input pipe 33 is arranged on one side of the printing material bin 3, and the other end of the input pipe 33 passes through the mounting hole 36 and is arranged in the printing material bin 3, the input pipe 33 is provided with a plurality of output ends, and a plurality of the output ends are connected with internal threaded pipes 37, a plurality of the high-pressure nozzles 34 are connected with the corresponding internal threaded pipes 37, and the high-pressure nozzles The head 34 is arranged in the printing material bin 3. Through the arranged mounting hole 36 and the input pipe 33, the input pipe 33 can be used to connect to the cleaning water pipe. The input pipe 33 is attached to the outer wall of the printing material bin 3 by welding to form an annular channel for cleaning water. However, in order to avoid the printing material feeder inlet 11, the annular channel has four through holes evenly distributed on the upper part of the printing material bin 3 and internal threaded tubes 37 about 10 mm long are welded to the input tube 33 on the outer wall. The four internal threaded tubes 37 are used to install the high-pressure nozzle 34. The high-pressure nozzle 34 has a threaded head, a hexagonal shape in the middle, and a hemispherical shape at the other end. Fine holes at multiple angles are arranged on one side of the hemispherical shape, so that the inside of the printing material bin 3 can be cleaned at multiple angles.

[0034] Furthermore, an ultrasonic sensor 38 is provided in the lower end shell 2. Through the ultrasonic sensor 38, the material level height inside the printing silo 3 can be detected in real time, and the detection data can be transmitted to the printing device control unit, which processes the data to control the start and stop or speed adjustment of the pumping device to avoid overflow or lack of printing materials.

[0035] Furthermore, the reinforcement storage bin 8 is connected to the bracket 7 through a snap-on structure, and the snap-on structure includes a slot 39, a snap 40 and a block 41, wherein the block 41 is arranged below the reinforcement storage bin 8, and the slot 39 is arranged above the bracket 7, one side of the block 41 is arranged in the slot 39, and the other end of the block 41 is arranged in the snap 40, and the snap 40 is arranged on the other side of the bracket 7, and the block 41 is L-shaped. Through the provided snap-on 40 structure, the reinforcement storage bin 8 can be installed on the bracket 7. When installing the reinforcement storage bin 8, it is necessary to first insert the block 41 below the reinforcement storage bin 8 into the slot 39 and then push it toward the direction of the steel bar feeder, so that the other end of the block 41 at the bottom of the reinforcement storage bin 8 is inserted into the snap 40, and the door panel of the reinforcement storage bin 8 is opened, and at the same time, the outlet 16 of the reinforcement storage bin 8 feeder is aligned with the inlet 11 of the steel bar segment feeder, thereby completing the installation of the reinforcement storage bin 8.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment, comprising an upper end shell (1) and a lower end shell (2), characterized in that: The lower end of the lower end shell (2) is connected to a printing material bin (3) via a connecting piece, a hollow auger (4) is arranged in the printing material bin (3), and the upper end of the hollow auger (4) passes through the bottom of the lower end shell (2) and extends into the lower end shell (2), and is rotatably connected to the bottom of the lower end shell (2), a rotary drive mechanism is arranged on one side of the hollow auger (4), and the driving end of the rotary drive mechanism is connected to the hollow auger (4), and a printing nozzle (5) is installed at the lower end of the printing material bin (3) via a mounting mechanism; An upper cover plate (6) is arranged above the upper end shell (1), a bracket (7) is arranged on the upper cover plate (6), a rib storage bin (8) is installed on the bracket (7) through a plug-in mechanism, an outlet (9) is arranged at the lower end of the rib storage bin (8), a feeder housing (10) is also arranged on the upper cover plate (6), a feeder inlet (11) is arranged at the upper end of the feeder housing (10), a feeder outlet (16) is arranged at the lower end of the feeder housing (10), and the positions of the outlet (9), the feeder inlet (11) and the feeder outlet (16) correspond to each other, a stepping motor (13) is arranged on one side of the feeder housing (10), and a driving end of the stepping motor (13) penetrates The feeder housing (10) is connected to a feeder flower shaft (14), and a plurality of grooves (15) are provided on the feeder flower shaft (14). A steel bar guide (12) is provided below the feeder outlet (16), and the steel bar guide (12) passes through the top of the upper end shell (1) and extends into the upper end shell (1). The other end of the steel bar guide (12) is provided with a steel bar segment launching chamber (17), and the steel bar segment launching chamber (17) is provided in the upper end shell (1). The lower end of the steel bar segment launching chamber (17) passes through the upper end shell (1) and is connected to the upper end of the hollow auger (4) in the lower end shell (2). A steel bar segment launching drive mechanism is provided on the periphery of the steel bar segment launching chamber (17).

2. According to claim 1, a multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment is characterized in that: The mounting mechanism is a clamp (18), and a fixing hole (19) and a threaded hole (20) are respectively arranged on two sides of the clamp (18); a bolt (21) is arranged on one side of the fixing hole (19), and the bolt (21) passes through the fixing hole (19) and is threadedly connected to the threaded hole (20).

3. According to claim 1, a multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment is characterized in that: The rotary drive mechanism comprises an extrusion motor (22), which is arranged on one side below the lower end shell (2), and a driving end of the extrusion motor (22) passes through the lower end shell (2) and is connected to a synchronous transmission mechanism, and the other end of the synchronous transmission mechanism is connected to the hollow auger (4).

4. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 3, characterized in that: The synchronous transmission mechanism comprises a driving wheel (23), a driven wheel (24), a synchronous belt (25) and a tension sleeve (42); the driving wheel (23) is connected to the driving end of the extrusion motor (22); the driven wheel (24) is fixedly arranged on the outer periphery of the hollow auger (4); the driving wheel (23) and the driven wheel (24) are connected by a synchronous belt (25); the driven wheel (24) is connected to the hollow auger (4) by the tension sleeve (42); and the driving wheel (23) is connected to the driving end of the extrusion motor (22) by the tension sleeve (42).

5. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 1, characterized in that: The steel bar segment emission drive mechanism comprises an electromagnetic coil drive control unit (26), the electromagnetic coil drive control unit (26) is arranged on one side inside the upper end shell (1), the electromagnetic coil drive control unit (26) is connected to an electromagnetic coil (27) via a control processor, the electromagnetic coil (27) is arranged on the outer periphery of the steel bar segment emission chamber (17), an infrared sensor (28) is arranged on one side of the inner wall of the steel bar segment emission chamber (17), and the output end of the infrared sensor (28) is connected to the electromagnetic coil drive control unit (26) via the control processor.

6. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 1, characterized in that: The connecting member comprises an upper mounting plate (29) and a lower mounting plate (30), both of which are provided with mounting grooves (31), the printing material bin (3) is connected with the mounting groove (31) on the upper mounting plate (29) through the mounting groove (31) on the lower mounting plate (30), the lower end shell (2) is fixed to the upper mounting plate (29) through bolts (21), and the hollow auger (4) extends into the lower end shell (2) through the mounting groove (31) and is connected with the steel bar segment emission chamber (17).

7. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 1, characterized in that: A feeding pipe (32) is provided on one side of the printing material bin (3), and the feeding pipe (32) is communicated with the inner cavity of the printing material bin (3).

8. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 6, characterized in that: A nozzle cleaning mechanism is arranged on one side of the printing material bin (3), and the nozzle cleaning mechanism comprises an input pipe (33), a plurality of high-pressure nozzles (34) and a nozzle connecting plate (35). The nozzle connecting plate (35) is arranged on one side of the upper mounting plate (29) and the lower mounting plate (30), and the nozzle connecting plate (35) forms a U-shaped groove with the upper mounting plate (29) and the lower mounting plate (30). A mounting hole (36) is arranged on one side of the nozzle connecting plate (35). The input pipe (33) is arranged on one side of the printing material bin (3), and the other end of the input pipe (33) passes through the mounting hole (36) and is arranged in the printing material bin (3). The input pipe (33) is provided with a plurality of output ends, and a plurality of the output ends are connected to internally threaded pipes (37). A plurality of the high-pressure nozzles (34) are connected to corresponding internally threaded pipes (37), and the high-pressure nozzles (34) are arranged in the printing material bin (3).

9. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 6, characterized in that: An ultrasonic sensor (38) is arranged inside the lower end shell (2).

10. The multifunctional concrete 3D printing nozzle capable of inserting a steel bar segment according to claim 6, characterized in that: The rib storage bin (8) is connected to the bracket (7) via a buckle structure, wherein the buckle structure comprises a buckle slot (39), a buckle (40) and a clamping block (41), wherein the clamping block (41) is arranged below the rib storage bin (8), the buckle slot (39) is arranged above the bracket (7), one side of the clamping block (41) is arranged in the buckle slot (39), the other end of the clamping block (41) is arranged in the buckle (40), the buckle (40) is arranged on the other side of the bracket (7), and the clamping block (41) is L-shaped.

Images