Interlayer steel fiber reinforcing device for 3D printing cement-based material

Abstract

The invention discloses an interlayer steel fiber reinforcing device for a 3D printing cement-based material. The interlayer steel fiber reinforcing device comprises a printing head, and a steel fiber reinforcing assembly is mounted on the printing head; the steel fiber reinforced assembly comprises a rotating cylinder rotationally arranged on the printer head in a sleeving mode, the inner wall of the rotating cylinder is rotationally connected with the printer head through a bearing, an L-shaped plate is fixedly connected to the printer head, a motor is fixedly connected to the L-shaped plate, and the output end of the motor is fixedly connected with a rotating shaft. The rotating shaft is fixedly sleeved with a driving gear, and a plurality of clamping teeth meshed with the driving gear are evenly and fixedly connected to the outer wall of the rotating cylinder. The vertical steel fibers and the transverse steel fibers are added into the cement-based composite material, a staggered structure can be formed, the upper layer, the lower layer and the adjacent layer of the cement-based composite material can be reinforced, the structural strength of the cement-based composite material is effectively improved, and the quality of the 3D printing cement-based composite material is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to an interlayer steel fiber reinforcement device for 3D printing cement-based materials. Background Art

[0002] 3D-printed cementitious composites (3D-printed cementitious composites) are a new type of construction material that combines traditional cementitious materials (such as concrete and mortar) with 3D printing technology. Using computer-controlled printing equipment, they build up specialized cementitious materials layer by layer, enabling template-free, automated construction.

[0003] Existing 3D printing devices for cement-based composite materials produce cement-based composite materials that are simply stacked materials, resulting in low bond strength between the upper and lower layers and the adjacent layers, which in turn reduces the strength of the entire cement-based composite material and affects its quality. To address this issue, the present invention proposes a device for 3D printing cement-based materials with interlayer steel fiber reinforcement. Summary of the Invention

[0004] The purpose of the present invention is to provide an interlayer steel fiber reinforcement device for 3D printing cement-based materials to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An interlayer steel fiber reinforcement device for 3D printing cement-based materials, comprising a printer head, wherein a steel fiber reinforcement component is mounted on the printer head;

[0007] The steel fiber reinforced assembly includes a rotating cylinder rotatably mounted on the printer head, the inner wall of the rotating cylinder being rotatably connected to the printer head via a bearing; an L-shaped plate is fixedly connected to the printer head, and a driving mechanism is mounted on the L-shaped plate;

[0008] The outer wall of the rotating cylinder is fixedly connected to a mounting plate, the bottom surface of the mounting plate is fixedly connected to an adjustment component, and the upper and lower layer reinforcement components are installed on the adjustment component; the side wall of the adjustment component is fixedly connected to a fixing plate, the bottom surface of the fixing plate is fixedly connected to an electric push rod, the end of the electric push rod is fixedly connected to a vertical plate, the adjacent layer reinforcement component is installed on the vertical plate, and the upper and lower layer reinforcement components match the adjacent layer reinforcement components.

[0009] Preferably, the driving mechanism includes a motor, which is fixedly mounted on an L-shaped plate. The output end of the motor is fixedly connected to a rotating shaft, a driving gear is fixedly sleeved on the rotating shaft, and the outer wall of the rotating cylinder is evenly fixedly connected to a plurality of teeth meshing with the driving gear.

[0010] Preferably, the upper and lower layer reinforcement components include a steel fiber air gun installed on the adjustment component, and a feed box is fixedly connected to the steel fiber air gun.

[0011] Preferably, the adjacent layer reinforcement component includes two rotating shafts rotatably connected to the lower end of the vertical plate, and rotating rollers are fixedly sleeved on the two rotating shafts. The same conveyor belt is wound around the two rotating rollers, and the outer edge of the conveyor belt is evenly fixedly connected with a plurality of trapezoidal tooth blocks; the vertical plate is also fixedly connected to an electric motor, and the output end of the motor is fixedly connected to the rotating shaft; the upper end of the vertical plate is fixedly connected to a steel fiber discharge box, and the bottom of the steel fiber discharge box is evenly fixedly connected to a plurality of rectangular discharge pipes; a quantitative feeding comb plate is fixedly connected to the middle part of the vertical side wall of the vertical plate, and the quantitative feeding comb plate is located directly below the steel fiber discharge box. A steel fiber quantitative guide assembly is also provided directly below the quantitative feeding comb plate, and the steel fiber quantitative guide assembly is also fixedly connected to the vertical side wall of the vertical plate.

[0012] Preferably, the quantitative unloading comb plate includes a first layer of material guide plates, a second layer of material guide plates and a third layer of material guide plates which are fixedly and symmetrically connected to the vertical side walls of the vertical plates from top to bottom. The outlets of the first layer of material guide plates, the second layer of material guide plates and the third layer of material guide plates are staggered with each other, and the outlet size gradually decreases; the diameter of the outlet of the third material guide plate is slightly larger than the diameter of the steel fiber, and the outlet is fixedly connected to a rectangular material guide pipe, and an electric control valve is installed on the rectangular material guide pipe; the first layer of material guide plates, the second layer of material guide plates and the third layer of material guide plates are fixedly connected to the same anti-static device, and the anti-static device is fixedly connected to a first vibrator.

[0013] Preferably, the steel fiber quantitative guide assembly includes a first rubber guide roller and a second rubber guide roller rotatably connected to the vertical side wall of the vertical plate, and the first rubber guide roller is tightly fitted with the second rubber guide roller; the outer edge of the first rubber guide roller is evenly provided with a plurality of guide grooves, and the rotating shaft and the first rubber guide roller are fixedly connected with pulleys, and the same transmission belt is wound around the two pulleys.

[0014] Preferably, the adjustment assembly includes a mounting rail fixedly connected to the mounting plate, a sliding block is movably sleeved on the mounting rail, a locking screw is threadedly connected to the sliding block, and the locking screw is fixedly connected to a twisting plate at one end away from the mounting rail.

[0015] Preferably, the steel fiber discharge box comprises a trapezoidal box, a material agitator is fixedly connected to the top of the trapezoidal box, and a second vibrator is fixedly connected to the vertical side wall of the trapezoidal box.

[0016] Preferably, the diameter of the driving gear is smaller than the outer diameter of the rotating cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention innovatively designs a steel fiber reinforced component. By adding vertical steel fibers and transverse steel fibers to the cement-based composite material, an interlaced structure can be formed, thereby reinforcing and strengthening the upper and lower layers and adjacent layers of the cement-based composite material, effectively enhancing the structural strength of the cement-based composite material and improving the quality of 3D-printed cement-based composite materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an interlayer steel fiber reinforcement device for 3D printing cement-based materials proposed by the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the connection structure between the printer head and the steel fiber reinforced component;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the steel fiber reinforced component;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the mid-layer reinforcement component;

[0023] Figure 5 for Figure 1 Schematic diagram of part of the structure of the mid-layer reinforcement component;

[0024] Figure 6 for Figure 1 Schematic diagram of the structure of the middle regulating component;

[0025] Figure 7 for Figure 1 Schematic diagram of the connection structure between the middle driving gear and the rotating cylinder;

[0026] Figure 8 Schematic diagram of the principle of the present invention.

[0027] Figure: 1, printer head; 2, rotating cylinder; 3, L-shaped plate; 4, motor; 5, rotating shaft; 6, driving gear; 7, latching gear; 8, mounting plate; 9, adjusting assembly; 10, steel fiber air gun; 11, feed box; 12, vertical plate; 13, rotating shaft; 14, rotating roller; 15, conveyor belt; 16, motor; 17, steel fiber discharge box; 18, mounting rail; 19, sliding block; 20, locking screw; 21, twisting plate; 22, fixing plate; 23, trapezoidal gear block; 24, quantitative down Material comb plate; 25. Steel fiber quantitative guide assembly; 26. First layer material guide plate; 27. Second layer material guide plate; 28. Third material guide plate; 29. Rectangular material guide tube; 30. Antistatic device; 31. First vibrator; 32. First rubber material guide roller; 33. Second rubber material guide roller; 34. Material guide trough; 35. Pulley; 36. Transmission belt; 37. Trapezoidal box; 38. Material agitator; 39. Rectangular discharge tube; 40. Second vibrator; 41. Electric control valve; 42. Electric push rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figure 1-8 , the present invention provides an interlayer steel fiber reinforcement device for 3D printing cement-based materials, comprising a frame, a printer head 1 is mounted on the frame, and a steel fiber reinforcement component is mounted on the printer head 1;

[0031] The steel fiber reinforcement component includes a rotating cylinder 2 rotatably sleeved on the printer head 1, the inner wall of the rotating cylinder 2 is rotatably connected to the printer head 1 through a bearing, an L-shaped plate 3 is fixedly connected to the printer head 1, a motor 4 is fixedly connected to the L-shaped plate 3, the output end of the motor 4 is fixedly connected to a rotating shaft 5, a driving gear 6 is fixedly sleeved on the rotating shaft 5, the outer wall of the rotating cylinder 2 is evenly fixedly connected with a plurality of teeth 7 that mesh with the driving gear 6, the outer wall of the rotating cylinder 2 is fixedly connected to a mounting plate 8, the upper and lower layer reinforcement components and the adjacent layer reinforcement components are fixedly connected to the mounting plate 8, the upper and lower layer reinforcement components include an adjusting component 9 fixedly connected to the mounting plate 8, a steel fiber air gun 10 is fixedly connected to the adjusting component 9, a feed box 11 is fixedly connected to the steel fiber air gun 10, the adjacent layer reinforcement component includes a fixed plate 22 fixedly connected to the adjusting component 9, and the side wall of the lower side of the fixed plate 22 is fixedly connected to an electric push rod 42. The end of the electric push rod 42 is fixedly connected to the vertical plate 12, and two rotating shafts 13 are rotatably connected to the vertical plate 12. The two rotating shafts 13 are fixedly sleeved with rotating rollers 14, and the same conveyor belt 15 is wound around the two rotating rollers 14. The outer edge of the conveyor belt 15 is evenly fixedly connected with a plurality of trapezoidal tooth blocks 23, and the vertical plate 12 is fixedly connected to the motor 16. The output end of the motor 16 is fixedly connected to the rotating shaft 13, and the vertical plate 12 is fixedly connected to the steel fiber discharge box 17. The bottom of the steel fiber discharge box 17 is evenly fixedly connected with a plurality of rectangular discharge pipes 39, and the vertical side wall of the vertical plate 12 is fixedly connected with a quantitative feeding comb plate 24, and the quantitative feeding comb plate 24 is located directly below the steel fiber discharge box 17. The vertical side wall of the vertical plate 12 is installed with a steel fiber quantitative guide assembly 25, and the steel fiber quantitative guide assembly 25 is located directly below the bottom outlet of the quantitative feeding comb plate 24.

[0032] In the above embodiment, when printing cement-based composite materials, the printer head 1 is driven by the driving mechanism to move for 3D printing, and the steel fiber air gun 10 is started. The steel fiber air gun 10 vertically nails the steel fibers into the lower layer of the cement-based composite material, and makes the upper end of the steel fibers leak on the upper side of the lower cement-based composite material. When printing the upper cement-based composite material, the cement-based composite material wraps the exposed steel fibers inside, so that one end of the steel fibers can be inserted into the lower layer of the cement-based composite material and the other end can be inserted into the upper layer of the cement-based composite material, thereby reinforcing the upper and lower layers of the cement-based composite material; by installing an electric push rod 42, the adjacent layer reinforcement component installed on the vertical plate 12 can be driven to move freely back and forth horizontally, which is more convenient for layering the fiber mechanism Adjustment is performed, which effectively improves the flexibility of use; horizontal steel fibers are released through the steel fiber discharge box 17, and the material agitator 38 and the second vibrator 40 on the steel fiber discharge box 17 cooperate with each other to enable the steel fibers in the steel fiber discharge box 17 to be discharged smoothly through multiple rectangular discharge pipes 39, and multiple steel fibers fall onto the quantitative feeding comb plate 24. The first layer of guide plates 26, the second layer of guide plates 27 and the third layer of guide plates 28 can use gravity and dislocation screening principles to make a steel fiber pass through the rectangular guide pipe 29 horizontally for discharge, and the anti-static device 30 and the first vibrator 31 can prevent static electricity from causing the steel fibers to stick to the first layer of guide plates 26, the second layer of guide plates 27 and the third layer of guide plates 28, thereby achieving The single steel fiber is quantitatively discharged horizontally. The horizontally discharged steel fiber falls between the first rubber guide roller 32 and the second rubber guide roller 33, and the steel fiber falls into the guide groove 34 on the first rubber guide roller 32 to maintain a horizontal state. The motor 16 drives the conveyor belt 15 and the first rubber guide roller 32 to rotate. The first rubber guide roller 32 rotates. Under the action of gravity, the steel fiber automatically separates from the first rubber guide roller 32 and falls onto the conveyor belt 15. Since the first rubber guide roller 32 rotates at a constant speed, the steel fiber can fall evenly and horizontally onto the conveyor belt 15, and the trapezoidal tooth block 23 on the conveyor belt 15 can separate the steel fibers evenly. When the conveyor belt 15 transports the steel fiber to the bottom, under the action of gravity, the steel fiber separates from the conveyor belt 15 and falls to the cement-based composite material, so that the steel fibers can be evenly and horizontally laid on the cement-based composite material. When the upper layer of cement-based composite material covers the transverse steel fibers, the vertical steel fibers cooperate with the transverse steel fibers to form a staggered structure, which can reinforce the upper and lower layers and adjacent layers of the cement-based composite material, effectively improve the structural strength of the cement-based composite material, and effectively improve the quality of 3D printed cement-based composite materials. The motor 4 drives the active gear 6 to rotate, the active gear 6 drives the card tooth 7 to rotate, the card tooth 7 drives the rotating cylinder 2 to rotate, and the rotating cylinder 2 drives the upper and lower layer reinforcement components and the adjacent layer reinforcement components to rotate 180 degrees. The direction of the steel fiber reinforced component can be adjusted according to the printing direction of the printer head 1.

[0033] The steel fiber quantitative guide assembly 25 includes a first rubber guide roller 32 and a second rubber guide roller 33 rotatably connected to the vertical side wall of the vertical plate 12. The first rubber guide roller 32 is tightly fitted with the second rubber guide roller 33. A plurality of guide grooves 34 are evenly arranged on the outer edge of the first rubber guide roller 32. Pulleys 35 are fixedly connected to the rotating shaft 13 and the first rubber guide roller 32. The same transmission belt 36 is wound around the two pulleys 35. The rotation of the rotating shaft 13 drives one pulley 35 to rotate, and the pulley 35 drives the other pulley 35 to rotate through the transmission belt 36. The pulley 35 drives the first rubber guide roller 32 to rotate at a uniform speed.

[0034] The quantitative unloading comb plate 24 includes two vertical side walls fixedly connected to the vertical plate 12, and the first layer guide plate 26, the second layer guide plate 27 and the third layer guide plate 28 are fixedly connected from top to bottom. The outlets of the first layer guide plate 26, the second layer guide plate 27 and the third layer guide plate 28 are staggered with each other. The outlet sizes of the first layer guide plate 26, the second layer guide plate 27 and the third layer guide plate 28 are gradually reduced. The diameter of the outlet of the third layer guide plate 28 is slightly larger than the diameter of a steel fiber, and the outlet is fixed. A rectangular material guide tube 29 is connected, and the first-layer material guide plate 26, the second-layer material guide plate 27 and the third material guide plate 28 are fixedly connected to the same anti-static device 30, and the anti-static device 30 is fixedly connected to the first vibrator 31. An electric control valve 41 is installed on the rectangular material guide tube 29. The electric control valve 41 can be realized by a motor-controlled gate structure to accurately control the release of only one fiber at a time, and the vibration generated when the electric control valve 41 is in operation can also prevent the fiber from getting stuck in the rectangular material guide tube 29.

[0035] The adjustment component 9 includes a mounting rail 18 fixedly connected to the mounting plate 8, and a sliding block 19 is movably sleeved on the mounting rail 18. A locking screw 20 is threadedly connected to the sliding block 19. By loosening the locking screw 20, the limit of the locking screw 20 on the sliding block 19 is released, so that the sliding block 19 can be pushed to slide on the mounting rail 18, so that the position of the sliding block 19 can be adjusted, so that the position of the upper and lower layer reinforcement components can be adjusted according to actual needs, thereby improving the flexibility of use.

[0036] The diameter of the driving gear 6 is smaller than the outer diameter of the rotating drum 2, which can reduce the rotation speed of the rotating drum 2, thereby improving the adjustment accuracy of the steel fiber reinforced component.

[0037] One end of the locking screw 20 away from the mounting rail 18 is fixedly connected to a twisting plate 21 . The provision of the twisting plate 21 can improve the convenience of rotating the locking screw 20 .

[0038] Working principle:

[0039] When printing cement-based composite materials, the printer head 1 is driven by a driving mechanism to move for 3D printing, and the steel fiber air gun 10 is started. The steel fiber air gun 10 vertically nails the steel fibers into the lower layer of the cement-based composite material, and makes the upper end of the steel fibers leak on the upper side of the lower cement-based composite material. When printing the upper cement-based composite material, the cement-based composite material wraps the exposed steel fibers inside, so that one end of the steel fibers can be inserted into the lower layer of the cement-based composite material and the other end can be inserted into the upper layer of the cement-based composite material, thereby reinforcing the upper and lower layers of the cement-based composite material. The horizontal steel fibers are released through the steel fiber discharge box 17, and the material agitator 38 on the steel fiber discharge box 17 cooperates with the second vibrator 40 The steel fibers in the steel fiber discharge box 17 can be discharged smoothly through multiple rectangular discharge pipes 39, and multiple steel fibers fall onto the quantitative discharge comb plate 24. The first layer of guide plates 26, the second layer of guide plates 27 and the third layer of guide plates 28 can use gravity and the principle of dislocation screening to stack the steel fibers horizontally in the rectangular guide pipe 29, and then control a steel fiber to be discharged horizontally through the rectangular guide pipe 29 through the electric control valve 41. The anti-static device 30 and the first vibrator 31 can prevent static electricity from causing the steel fibers to stick to the first layer of guide plates 26, the second layer of guide plates 27 and the third layer of guide plates 28, thereby realizing the quantitative horizontal discharge of a single steel fiber, and the horizontally discharged steel fibers The steel fibers fall between the first rubber guide roller 32 and the second rubber guide roller 33, and fall into the guide groove 34 on the first rubber guide roller 32 to maintain a horizontal state. The motor 16 drives the conveyor belt 15 and the first rubber guide roller 32 to rotate. The first rubber guide roller 32 rotates. Under the action of gravity, the steel fibers automatically break away from the first rubber guide roller 32 and fall onto the conveyor belt 15. Since the first rubber guide roller 32 rotates at a constant speed, the steel fibers can fall evenly and horizontally onto the conveyor belt 15, and the trapezoidal tooth blocks 23 on the conveyor belt 15 can evenly isolate the steel fibers. When the conveyor belt 15 transports the steel fibers downward, under the action of gravity, the steel fibers break away from the conveyor belt 15 and fall onto the cement-based composite material. In this way, the steel fibers can be laid evenly and horizontally on the cement-based composite material. When the upper layer of cement-based composite material covers the transverse steel fibers, the vertical steel fibers cooperate with the transverse steel fibers to form a staggered structure, which can reinforce the upper and lower layers and adjacent layers of the cement-based composite material, effectively improve the structural strength of the cement-based composite material, and effectively improve the quality of 3D printed cement-based composite materials. The motor 4 drives the active gear 6 to rotate, the active gear 6 drives the latch 7 to rotate, the latch 7 drives the rotating cylinder 2 to rotate, and the rotating cylinder 2 drives the upper and lower layer reinforcement components and the adjacent layer reinforcement components to rotate 180 degrees. The direction of the steel fiber reinforced component can be adjusted according to the printing direction of the printer head 1.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printed cement-based material interlayer steel fiber reinforcement device, characterized in that: It comprises a printer head (1), on which a steel fiber reinforced component is mounted; The steel fiber reinforced assembly comprises a rotating cylinder (2) rotatably sleeved on a printer head (1), the inner wall of the rotating cylinder (2) being rotatably connected to the printer head (1) via a bearing; an L-shaped plate (3) is fixedly connected to the printer head (1), and a driving mechanism is mounted on the L-shaped plate (3); The outer wall of the rotating cylinder (2) is fixedly connected to a mounting plate (8), the bottom surface of the mounting plate (8) is fixedly connected to an adjusting assembly (9), and the adjusting assembly (9) is mounted with upper and lower layer reinforcement assemblies; the side wall of the adjusting assembly (9) is fixedly connected to a fixing plate (22), the bottom surface of the fixing plate (22) is fixedly connected to an electric push rod (42), the end of the electric push rod (42) is fixedly connected to a vertical plate (12), and the adjacent layer reinforcement assembly is mounted on the vertical plate (12), and the upper and lower layer reinforcement assemblies match the adjacent layer reinforcement assembly.

2. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 1, characterized in that: The driving mechanism comprises a motor (4), the motor (4) being fixedly mounted on the L-shaped plate (3), the output end of the motor (4) being fixedly connected to a rotating shaft (5), a driving gear (6) being fixedly sleeved on the rotating shaft (5), and a plurality of latching teeth (7) meshing with the driving gear (6) being evenly fixedly connected to the outer wall of the rotating cylinder (2).

3. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 1, characterized in that: The upper and lower layer reinforcement components include a steel fiber air gun (10) installed on the adjustment component (9), and a feed box (11) is fixedly connected to the steel fiber air gun (10).

4. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 1, characterized in that: The adjacent layer reinforcement assembly comprises two rotating shafts (13) rotatably connected to the lower end of the vertical plate (12), a rotating roller (14) is fixedly sleeved on the two rotating shafts (13), a same conveyor belt (15) is wound around the two rotating rollers (14), and a plurality of trapezoidal tooth blocks (23) are evenly fixedly connected to the outer edge of the conveyor belt (15); the vertical plate (12) is also fixedly connected to an electric motor (16), and the output end of the electric motor (16) is fixedly connected to the rotating shaft (13); the upper end of the vertical plate (12) is fixed A steel fiber discharge box (17) is connected, and a plurality of rectangular discharge pipes (39) are evenly fixedly connected to the bottom of the steel fiber discharge box (17); a quantitative discharge comb plate (24) is fixedly connected to the middle of the vertical side wall of the vertical plate (12), and the quantitative discharge comb plate (24) is located directly below the steel fiber discharge box (17); a steel fiber quantitative guide component (25) is also provided directly below the quantitative discharge comb plate (24), and the steel fiber quantitative guide component (25) is also fixedly connected to the vertical side wall of the vertical plate (12).

5. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 4, characterized in that: The quantitative unloading comb plate (24) comprises a first layer of material guide plate (26), a second layer of material guide plate (27) and a third layer of material guide plate (28) which are fixedly and symmetrically connected to the vertical side wall of the vertical plate (12) from top to bottom. The outlets of the first layer of material guide plate (26), the second layer of material guide plate (27) and the third layer of material guide plate (28) are staggered with each other, and the outlet size gradually decreases. The diameter of the outlet of the third layer of material guide plate (28) is slightly larger than the diameter of the steel fiber, and the outlet is fixedly connected to a rectangular material guide pipe (29), and an electric control valve (41) is installed on the rectangular material guide pipe (29). The first layer of material guide plate (26), the second layer of material guide plate (27) and the third layer of material guide plate (28) are fixedly connected to the same antistatic device (30), and the antistatic device (30) is fixedly connected to a first vibrator (31).

6. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 4, characterized in that: The steel fiber quantitative guide assembly (25) includes a first rubber guide roller (32) and a second rubber guide roller (33) which are rotatably connected to the vertical side wall of the vertical plate (12), wherein the first rubber guide roller (32) and the second rubber guide roller (33) are tightly fitted; a plurality of guide grooves (34) are evenly arranged on the outer edge of the first rubber guide roller (32); pulleys (35) are fixedly connected to the rotating shaft (13) and the first rubber guide roller (32), and the same transmission belt (36) is wound around the two pulleys (35).

7. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 1, characterized in that: The adjustment assembly (9) includes a mounting rail (18) fixedly connected to the mounting plate (8), a sliding block (19) movably sleeved on the mounting rail (18), a locking screw (20) threadedly connected to the sliding block (19), and a twisting plate (21) fixedly connected to the end of the locking screw (20) away from the mounting rail (18).

8. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 4, characterized in that: The steel fiber discharge box (17) comprises a trapezoidal box (37), a material stirrer (38) is fixedly connected to the top of the trapezoidal box (37), and a second vibrator (40) is fixedly connected to the vertical side wall of the trapezoidal box (37).

9. The interlayer steel fiber reinforcement device for 3D printing cement-based materials according to claim 2, characterized in that: The diameter of the driving gear (6) is smaller than the outer diameter of the rotating cylinder (2).

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