CN115416133B - 3D printing device and printing method for cement-based material by utilizing special-shaped steel fibers - Google Patents

Abstract

The invention relates to a 3D printing device and a printing method for cement-based materials by utilizing special-shaped steel fibers, wherein the 3D printing device for cement-based materials by utilizing special-shaped steel fibers comprises a discharging pipe and a controller, the discharging pipe comprises a discharging pipe body and a conical discharging hole, one side of the discharging pipe body is fixedly provided with a special-shaped steel fiber inserting mechanism, the special-shaped steel fiber inserting mechanism comprises an inserting unit, a wire feeding pipe and a shearing extrusion unit, and a wire reel for winding a steel wire is fixedly arranged above the wire feeding pipe; and to a printing method. The 3D printing device for the cement-based material by utilizing the special-shaped steel fibers can cut steel wires in the printing process, the special-shaped steel fibers are formed by extrusion after cutting, the lengths of the steel fibers can be accurately cut according to printing requirements, the structure is ingenious, and the operation is convenient.

Description

3D printing device and printing method for cement-based materials using special-shaped steel fibers

Technical field

The invention relates to the field of construction, and in particular to a 3D printing device and printing method for cement-based materials using special-shaped steel fibers.

Background technique

3D printing technology is a rapid prototyping technology that is based on digital model files and uses powdered adhesive materials to construct objects through layer-by-layer printing. It has been gradually used in aerospace, automotive components, medical equipment, culture and art and construction engineering and other fields. In terms of construction engineering, although 3D printing technology has developed rapidly, there are still certain shortcomings in its application. This is mainly due to the fact that most structures printed using 3D printing cement-based materials do not have reinforcements, resulting in poor tensile and seismic performance. Weak, the molding of taller and larger span structures is difficult to achieve.

At present, a small number of domestic and foreign researchers have used fiber materials such as steel fiber, polyvinyl alcohol fiber, polyethylene fiber, and glass fiber to improve the tensile and seismic properties of 3D printed reinforced cement-based composite materials. In existing architectural 3D printing technology, fibers are often mixed into cement-based materials and printed layer by layer along with the cement-based materials. However, in this printing method, on the one hand, the fiber reduces the fluidity of the cement-based material and increases the possibility of clogging the nozzle; on the other hand, the bonding method between the layers of the cement-based material is compared with the one-piece pouring method. , the strength and stability are greatly reduced. In response to this problem, some studies have proposed that on the basis of layer-by-layer printing of existing cement-based materials, additional steel fibers are inserted between layers. This method greatly enhances the bonding strength and stability between the layers of the printed structure. And there is no possibility of clogging the nozzle by inserting additional steel fibers.

The current steel fibers are basically cut into segments of the same length in advance and placed in the automatic vibrating plate loading device. This feeding method has two problems: first, the vibrating plate loading device has a relatively complex structure and high cost; There are many accessories; secondly, during the 3D printing process, the lengths of steel fibers used at different steel fiber insertion points may not be exactly the same. If there are requirements for steel fibers of different lengths, it will be more troublesome to handle, and even manual insertion is required. .

In the existing printing structure, in order to increase the strength or special requirements, special-shaped steel fibers need to be inserted, such as bow-shaped, wavy-shaped steel fibers, etc. Due to the irregular shape, the requirements for the automatic loading device of the vibrating plate are higher. Many construction parties, Since the automatic insertion problem of the special-shaped steel fiber cannot be solved, manual insertion is simply performed, which is very inefficient.

In addition, the steel fiber installation method generally uses two sets of robotic arms. The steel fiber splicing robotic arm follows the cement-based material printing robotic arm to print cement-based materials and steel fiber splicing respectively. It is very troublesome to coordinate. Especially when two sets of robotic arms turn or reset in a small range of paths, it is easy to cause interference; using two sets of universal robotic arms is also very costly; in addition, for cement-based material printing systems on the 3D printer track, it is simply impossible to Two sets of devices for cement-based material printing and steel fiber plugging are operated on the same 3D printer track. The 3D printer track described in the present invention is the track in the X, Y, and Z directions commonly used in 3D printing.

In order to solve the above existing problems, people have been seeking an ideal technical solution.

Contents of the invention

In view of the shortcomings of the existing technology, the present invention provides a cement-based material 3D printing device and printing method using special-shaped steel fibers.

The technical solution adopted by the present invention is:

The 3D printing device for cement-based materials using special-shaped steel fibers includes a discharge pipe for cement-based material extrusion and a controller. The discharge pipe includes a cylindrical discharge pipe body and a cone-shaped discharge pipe located at the bottom of the discharge pipe body. Discharge port, a special-shaped steel fiber plug-in mechanism is fixed on one side of the discharge pipe body. The special-shaped steel fiber plug-in mechanism includes a plug-in unit fixed on the discharge pipe body, and a plug-in unit fixed on the discharge pipe body. The wire feeding tube and the shearing and extruding unit provided on the wire feeding tube, the plug-in unit includes a first power source fixed on the discharge pipe body that outputs vertical reciprocating linear motion and a first power source provided on the first power There is a guide column at the lower end of the source. One side of the guide column has a guide slit. The output end of the first power source has a plug-in push rod that matches the guide slit. The shearing and extrusion unit includes a guide fixed on the bottom surface of the wire feed tube. The molding base on the side, the first L-shaped connecting plate fixed on one side of the wire feed tube, the second power source fixed on the connecting plate, and the second power source fixed on the output end of the second power source for extrusion fit with the molding base. Movable forming plate, the bottom surface of the wire feeding tube is a horizontal shearing surface, the movable forming plate has a movable shearing surface that cooperates with the horizontal shearing surface, the output axis of the second power source is parallel to the horizontal shearing surface, and the wire feeding tube A second L-shaped connecting plate is provided on the other side of the tube. A third power source is fixed on the second L-shaped connecting plate. The output end of the third power source has a special-shaped push plate and the thickness of the special-shaped push plate is equal to the thickness of the special-shaped steel fiber. Correspondingly, the special-shaped push plate is fit and overlapped on the forming base, and the second power source and the third power source are arranged at an angle of 90° in the circumferential direction of the wire feeding tube, above the wire feeding tube A winding reel for winding steel wires is fixedly installed, and the controller is control-connected to the first power source, the second power source and the third power source respectively.

Preferably, the horizontal shearing surface is provided with a C-shaped track, and the movable shearing surface is provided with a C-shaped chute that slides with the C-shaped track.

Preferably, the wire feeding tube is provided with a pressure roller and a first reduction motor that drives the pressure roller.

Preferably, the first power source, the second power source and the third power source are hydraulic push rods or electric push rods.

Preferably, the wire feeding tube is also fixed with a reinforcing rib plate connecting the wire feeding tube and the first L-shaped connecting plate, and a positioning plate for fixing the second power source is fixed on the reinforcing rib plate.

Preferably, an annular inner plate is fixed on the top of the discharge pipe body, a connecting material pipe is inserted into the annular inner plate, and the bottom of the connecting material pipe has an annular outer plate. Between the annular inner plate and the annular outer plate A thrust bearing is arranged between them. The upper plate of the thrust bearing is fixed to the annular inner plate. The lower plate of the thrust bearing is fixed to the annular outer plate. There is a rotation gap between the connecting material pipe and the upper plate, lower plate and annular inner plate. The upper surface of the annular inner plate has an annular rack. A fixed plate is set horizontally on the outer wall of the connecting material pipe. A second reduction motor is set at the bottom of the fixed plate. The output shaft of the second reduction motor has an annular rack. The rack-shaped gear meshes with the matching gear, and the controller is connected to the second reduction motor for control.

The method for 3D printing using the cement-based material 3D printing device includes the following steps:

Step 1. The controller controls the robotic arm or 3D printer track based on the preset printing path, so that the cement-based material 3D printing device installed on it runs according to the printing path;

Step 2. When the cement-based material 3D printing device is running according to the printing path, the cement-based material flows out of the discharge pipe. At the position where the steel fiber needs to be inserted, the second reduction motor drives the discharge pipe to rotate and then drives the plug-in unit and The wire feed tube rotates at a certain angle along the axis of the discharge tube, so that the lower end of the plug-in unit faces the position where the special-shaped steel fiber needs to be inserted. During this process, the controller controls the first step according to the preset steel wire length at this position. The reduction motor drives the pressure roller to straighten the steel wire on the winding reel and send the preset length of steel wire between the forming base and the movable forming plate. Then the second power source pushes the movable forming plate to move horizontally to cut the steel wire. Continue to push the movable forming plate, and together with the forming base, squeeze the cut steel wire into special-shaped steel fibers of the required shape;

Step 3. After extrusion, the movable forming plate is slightly retracted, and the controller controls the third power source to push the special-shaped push plate. The special-shaped push plate moves horizontally along the gap between the forming base and the movable forming plate, and then pushes the formed special shape. Steel fiber, push the special-shaped steel fiber into the guide gap of the guide column, and then the third power source and the second power source are reset respectively;

Step 4. The controller controls the insertion push rod of the first power source to move downward along the guide seam, pushing the special-shaped steel fiber stuck in the guide seam downward to insert into the cement-based material;

Step 5. After the plugging is completed, the first power source is reset.

The 3D printing device for cement-based materials using special-shaped steel fibers of the present invention can cut steel wires during the printing process, and then extrud and shape special-shaped steel fibers after cutting, and can accurately cut the length of the steel fibers according to printing needs. Ingenious structure and easy operation.

Furthermore, there is a C-shaped track on the horizontal shearing surface, and the movable shearing surface has a C-shaped chute that slides with the C-shaped track, so that the movement of the movable shearing surface along the horizontal shearing surface is more stable, and at the same time The second power source does not need to bear the torque of the movable forming plate in the vertical direction, thereby extending the life of the second power source.

Furthermore, the wire feeding tube is provided with a pressure roller and a first reduction motor that drives the pressure roller. The first reduction motor drives the pressure roller, pulls and straightens the steel wire on the winding reel and sends the preset length of steel wire into the forming base. and between the movable forming plates.

Furthermore, a reinforcing rib plate connecting the wire feeding pipe and the first L-shaped connecting plate is fixed on the wire feeding pipe, and a positioning plate for fixing the second power source is fixed on the reinforcing rib plate, so that the second power source The source runs more stably.

Furthermore, an ingenious structure is adopted to rotate and assemble the discharge pipe at the bottom of the connecting pipe, and control the rotation through a second reduction motor, and fix the plug-in unit and wire feeding pipe on one side of the discharge pipe, so that when it is necessary to insert The position of the steel fiber, the second reduction motor drives the discharge pipe to rotate and then drives the special-shaped steel fiber plug-in mechanism to rotate at a certain angle along the axis of the discharge pipe, so that the lower end of the plug-in unit faces the position where the steel fiber needs to be inserted. During the process, the controller controls the first reduction motor to drive the pressure roller to pull and straighten the steel wire on the winding reel according to the preset length of the steel wire at this position, and sends the preset length of steel wire between the forming base and the movable forming plate. , and then the second power source pushes the movable forming plate to move horizontally to cut the steel wire, and then continues to push the movable forming plate, and together with the forming base, the cut steel wire is extruded into special-shaped steel fibers of the required shape; after extrusion, the movable forming plate is The forming plate retracts slightly, and the controller controls the third power source to push the special-shaped push plate. The special-shaped push plate moves horizontally along the gap between the forming base and the movable forming plate, and then pushes the formed special-shaped steel fiber into the special-shaped steel fiber. in the guide seam of the guide column, and then the third power source and the second power source are reset respectively; the controller controls the insertion push rod of the first power source to move downward along the guide seam to push the special-shaped steel fiber stuck in the guide seam. Insert downward into the cement-based material.

In this way, in the field of 3D printing of cement-based materials, the discharge pipe of cement-based materials and the special-shaped steel fiber plug-in mechanism can be set up on one printing system, which greatly saves costs and effectively prevents interference. In addition, it also perfectly solves the problem of cement-based materials. The problem is that two sets of devices for base material printing and steel fiber plugging cannot use the same 3D printer track for printing operations.

Description of drawings

Figure 1 is a schematic structural diagram of a 3D printing device for cement-based materials using special-shaped steel fibers in an embodiment of the present invention.

Figure 2 is an enlarged structural schematic diagram of position A in Figure 1.

Figure 3 is a schematic structural diagram of the wire feed tube and shearing and extrusion unit.

Fig. 4 is a schematic left structural diagram of the plug-in unit in Fig. 1.

Figure 5 is a schematic structural diagram of an arcuate steel fiber.

Implementation

The technical solution of the present invention will be further described in detail below through specific embodiments.

The 3D printing device for cement-based materials using special-shaped steel fibers, as shown in Figure 1-5, includes a discharge pipe for cement-based material extrusion and a controller (not shown in the picture). The discharge pipe includes a cylindrical discharge pipe. Pipe body 2 and a cone-shaped discharge port 1 located at the bottom of the discharge pipe body. A special-shaped steel fiber plug-in mechanism is fixed on one side of the discharge pipe body. The special-shaped steel fiber plug-in mechanism includes a fixed steel fiber plug-in mechanism fixed on the discharge pipe body. A plug-in unit, a wire feed tube 6 fixed on the plug unit, and a shearing and extrusion unit installed on the wire feed tube. The plug-in unit includes an output vertical reciprocating linear motion fixed on the discharge pipe body. The first power source 4 and the guide column 3 located at the lower end of the first power source. One side of the guide column has a guide slit 19. The output end of the first power source has a plug-in push rod 20 that fits the guide slit. Shear The cutting and extruding unit includes a forming base 21 fixed on one side of the bottom surface of the wire feed tube, a first L-shaped connecting plate 8 fixed on one side of the wire feeding tube, a second power source 25 fixed on the connecting plate, and a second power source 25 fixed on the connecting plate. The movable forming plate 18 at the second power source output end 27 is used for extrusion fit with the forming base. The bottom surface of the wire feed tube is a horizontal shearing surface, and the movable forming plate has a movable shearing surface that shears and fits with the horizontal shearing surface. , the output axis of the second power source is parallel to the horizontal shear surface, which has a C-shaped track (not shown in the figure), and the movable shear surface has a C-shaped chute that slides with the C-shaped track. (Not shown in the figure) This makes the movement of the movable shear surface along the horizontal shear surface more stable. At the same time, the second power source does not need to bear the torque of the movable forming plate in the vertical direction, extending the life of the second power source.

The other side of the wire feed tube is provided with a second L-shaped connecting plate 7, and a third power source 9 is fixed on the second L-shaped connecting plate. The output end of the third power source has a special-shaped push plate 28 and the thickness of the special-shaped push plate is equal to The thickness of the special-shaped steel fibers is equivalent, and the special-shaped push plate is fit and overlapped on the molded base. In this embodiment, the extruded steel fibers are arcuate steel fibers, and the special-shaped push plate 28 is also arcuate. In other embodiments, , the special-shaped steel fiber and special-shaped push plate can also be wavy, etc. The second power source 25 and the third power source 9 are arranged at an angle of 90° in the circumferential direction of the wire feed tube, and are fixed above the wire feed tube for The coil reel 23 around which the steel wire is wound is controlled and connected by the controller to the first power source, the second power source and the third power source respectively. The first power source, the second power source and the third power source are all hydraulic push rods or Electric push rod, in this embodiment, the first power source and the second power source are hydraulic push rods, and the third power source is an electric push rod.

In this embodiment, the wire feeding tube is provided with a pressure roller 22 and a first reduction motor (not shown in the figure) that drives the pressure roller, which pulls and straightens the steel wire on the winding reel and sends the steel wire of the preset length into the forming base. and between the movable forming plates. The wire feeding pipe is also fixed with a reinforcing rib plate 24 connecting the wire feeding pipe 6 and the first L-shaped connecting plate 8. A positioning plate 26 for fixing the second power source is fixed on the reinforcing rib plate, so that the second power source can operate. more stable.

An annular inner plate 14 is fixed at the top of the discharge pipe body. A connecting material pipe 5 is inserted into the annular inner plate. The bottom of the connecting material pipe has an annular outer plate 17 between the annular inner plate and the annular outer plate. A thrust bearing is provided. The upper plate 15 of the thrust bearing is fixed to the annular inner plate 15. The lower plate 16 of the thrust bearing is fixed to the annular outer plate 17. There is a rotation between the connecting material pipe and the upper plate, lower plate and annular inner plate. gap, the upper surface of the annular inner plate has an annular rack 10, a fixed plate 12 is set horizontally on the outer wall of the connecting material pipe, a second reduction motor 11 is set at the bottom of the fixed plate, and the output shaft of the second reduction motor has a The annular rack meshes with the matching gear 13, and the controller is connected to the second reduction motor.

The cement-based material 3D printing device using special-shaped steel fibers in this embodiment can cut the steel wires during the printing process, and then extrud and shape them into special-shaped steel fibers after cutting, and the length of the steel fibers can be accurately cut according to the printing requirements. , ingenious structure and easy operation.

Furthermore, an ingenious structure is adopted to rotate and assemble the discharge pipe at the bottom of the connecting pipe, and control the rotation through a second reduction motor, and fix the plug-in unit and wire feeding pipe on one side of the discharge pipe, so that when it is necessary to insert The position of the steel fiber, the second reduction motor drives the discharge pipe to rotate and then drives the special-shaped steel fiber plug-in mechanism to rotate at a certain angle along the axis of the discharge pipe, so that the lower end of the plug-in unit faces the position where the steel fiber needs to be inserted. During the process, the controller controls the first reduction motor to drive the pressure roller to pull and straighten the steel wire on the winding reel according to the preset length of the steel wire at this position, and sends the preset length of steel wire between the forming base and the movable forming plate. , and then the second power source pushes the movable forming plate to move horizontally to cut the steel wire, and then continues to push the movable forming plate, and together with the forming base, the cut steel wire is extruded into special-shaped steel fibers of the required shape; after extrusion, the movable forming plate is The forming plate retracts slightly, and the controller controls the third power source to push the special-shaped push plate. The special-shaped push plate moves horizontally along the gap between the forming base and the movable forming plate, and then pushes the formed special-shaped steel fiber into the special-shaped steel fiber. in the guide seam of the guide column, and then the third power source and the second power source are reset respectively; the controller controls the insertion push rod of the first power source to move downward along the guide seam to push the special-shaped steel fiber stuck in the guide seam. Insert downward into the cement-based material.

In this way, in the field of 3D printing of cement-based materials, the discharge pipe of cement-based materials and the special-shaped steel fiber plug-in mechanism can be set on one printing system, which greatly saves costs and effectively prevents interference; in addition, it also perfectly solves the problem of cement-based materials. The problem is that two sets of devices for base material printing and steel fiber plugging cannot use the same 3D printer track for printing operations.

The 3D printing method using the cement-based material 3D printing device, as shown in Figure 1-5, includes the following steps:

Step 1. The controller controls the robotic arm or 3D printer track based on the preset printing path, so that the cement-based material 3D printing device installed on it runs according to the printing path;

Step 2. When the cement-based material 3D printing device is running according to the printing path, the cement-based material flows out of the discharge pipe. At the position where the steel fiber needs to be inserted, the second reduction motor drives the discharge pipe to rotate and then drives the plug-in unit and The wire feed tube rotates at a certain angle along the axis of the discharge tube, so that the lower end of the plug-in unit faces the position where the special-shaped steel fiber needs to be inserted. During this process, the controller controls the first step according to the preset steel wire length at this position. The reduction motor drives the pressure roller to straighten the steel wire on the winding reel and send the preset length of steel wire between the forming base and the movable forming plate. Then the second power source pushes the movable forming plate to move horizontally to cut the steel wire. Continue to push the movable forming plate, and together with the forming base, squeeze the cut steel wire into special-shaped steel fibers of the required shape;

Step 3. After extrusion, the movable forming plate is slightly retracted, and the controller controls the third power source to push the special-shaped push plate. The special-shaped push plate moves horizontally along the gap between the forming base and the movable forming plate, and then pushes the formed special shape. Steel fiber, push the special-shaped steel fiber into the guide gap of the guide column, and then the third power source and the second power source are reset respectively;

Step 4. The controller controls the insertion push rod of the first power source to move downward along the guide seam, pushing the special-shaped steel fiber stuck in the guide seam downward to insert into the cement-based material;

Step 5. After the plugging is completed, the first power source is reset.

Claims (6)

1. A 3D printing device for cement-based materials using special-shaped steel fibers, including a discharge pipe for cement-based material extrusion and a controller. The discharge pipe includes a cylindrical discharge pipe body and a cone located at the bottom of the discharge pipe body. shaped discharge port, characterized in that: a special-shaped steel fiber plug-in mechanism is fixed on one side of the discharge pipe body, and the special-shaped steel fiber plug-in mechanism includes a plug-in unit fixed on the discharge pipe body, a fixed A wire feeding tube provided on the plug-in unit and a shearing and extruding unit provided on the wire feeding tube. The plug-in unit includes a first power source fixed on the discharge pipe body that outputs vertical reciprocating linear motion. And a guide column located at the lower end of the first power source. One side of the guide column has a guide slit. The output end of the first power source has a plug-in push rod that matches the guide slit. The shearing and extrusion unit includes a fixed A molded base on the bottom side of the wire feed tube, a first L-shaped connecting plate fixed on one side of the wire feeding tube, a second power source fixed on the connecting plate, and a power source fixed on the output end of the second power source for communicating with The movable forming plate is squeeze-fitted by the forming base. The bottom surface of the wire feeding tube is a horizontal shearing surface. The movable forming plate has a movable shearing surface that is shear-matched with the horizontal shearing surface. The output axis of the second power source is in contact with the horizontal shearing surface. The cut surfaces are parallel, and a second L-shaped connecting plate is provided on the other side of the wire feed tube. A third power source is fixed on the second L-shaped connecting plate. The output end of the third power source has a special-shaped push plate and the thickness of the special-shaped push plate The thickness of the special-shaped steel fiber is equivalent to that of the special-shaped push plate. The special-shaped push plate is fit and overlapped on the forming base. The second power source and the third power source are arranged at an angle of 90° in the circumferential direction of the wire feed tube. , a winding reel for winding steel wire is fixed above the wire feed tube. There is a pressure roller and a first reduction motor that drives the pressure roller in the wire feed tube. The controller is connected to the first reduction motor and the first power source respectively. , the second power source and the third power source control connection. 2. The cement-based material 3D printing device using special-shaped steel fibers according to claim 1, characterized in that: the horizontal shearing surface has a C-shaped track, and the movable shearing surface has a C-shaped track that slides with the C-shaped track Matching C-shaped chute. 3. The cement-based material 3D printing device using special-shaped steel fibers according to claim 2, characterized in that: the first power source, the second power source and the third power source are all hydraulic push rods. Or electric actuator. 4. The cement-based material 3D printing device using special-shaped steel fibers according to claim 3, characterized in that: the wire feeding tube is also fixed with a reinforcing rib plate connecting the wire feeding tube and the first L-shaped connecting plate, A positioning plate for fixing the second power source is fixed on the reinforcing rib plate. 5. The cement-based material 3D printing device using special-shaped steel fibers according to claim 4, characterized in that: an annular inner plate is fixed at the top of the discharge pipe body, and the connecting material pipe is plugged into the annular inner plate. , the bottom of the connecting material pipe has an annular outer plate, a thrust bearing is set between the annular inner plate and the annular outer plate, the upper plate of the thrust bearing is fixed to the annular inner plate, and the lower plate of the thrust bearing is fixed to the annular outer plate Fixed, there is a rotation gap between the connecting material pipe and the upper plate, lower plate and annular inner plate. The upper surface of the annular inner plate has an annular rack. A fixed plate is set horizontally on the outer wall of the connecting material pipe. A second reduction motor is provided at the bottom of the plate. The output shaft of the second reduction motor has a gear meshing with the annular rack. The controller is connected to the second reduction motor. 6. A method for 3D printing using the cement-based material 3D printing device of claim 5, characterized by comprising the following steps: Step 1. The controller controls the robotic arm or 3D printer track based on the preset printing path, so that the cement-based material 3D printing device installed on it runs according to the printing path; Step 2. When the cement-based material 3D printing device is running according to the printing path, the cement-based material flows out of the discharge pipe. At the position where the steel fiber needs to be inserted, the second reduction motor drives the discharge pipe to rotate and then drives the plug-in unit and The wire feed tube rotates at a certain angle along the axis of the discharge tube, so that the lower end of the plug-in unit is facing the position where the special-shaped steel fiber needs to be inserted. In this process, the controller controls the third wire according to the length of the steel wire preset at this position. A reduction motor drives the pressure roller to straighten the steel wire on the winding reel and send the preset length of steel wire between the forming base and the movable forming plate. Then the second power source pushes the movable forming plate to move horizontally to cut the steel wire. Then continue to push the movable forming plate, and together with the forming base, the cut steel wire will be extruded into special-shaped steel fibers of the required shape; Step 3. After extrusion, the movable forming plate is slightly retracted, and the controller controls the third power source to push the special-shaped push plate. The special-shaped push plate moves horizontally along the gap between the forming base and the movable forming plate, and then pushes the formed special shape. Steel fiber, push the special-shaped steel fiber into the guide gap of the guide column, and then the third power source and the second power source are reset respectively; Step 4. The controller controls the insertion push rod of the first power source to move downward along the guide seam, pushing the special-shaped steel fiber stuck in the guide seam downward to insert into the cement-based material; Step 5. After the plugging is completed, the first power source is reset.