Intelligent feeding and temperature control system of modular FDM 3D printing equipment and control method

Abstract

The invention provides an intelligent feeding and temperature control system of modular FDM 3D printing equipment and a control method, and belongs to the technical field of printing equipment. The problem that the existing temperature control precision is not easy to control is solved. According to the intelligent feeding and temperature control system of the modular FDM 3D printing equipment and the control method, the intelligent feeding and temperature control system comprises a printing main body with a workbench, a spray head unit and an extrusion unit, a control unit is further arranged in the printing main body, and a moving unit is further arranged in the printing main body; the spray head unit comprises an assembly plate and a spray head structure arranged on the assembly plate and connected with the assembly plate, the assembly plate is connected with the moving unit through a first connecting unit, the extrusion unit comprises a heat source, the temperature control system of the printing body comprises a heat source temperature sensor and a spray head temperature sensor, and an adjusting unit is arranged on the lower end face of the assembly plate. A heat preservation assembly is arranged between the assembling plate and the workbench. The temperature control device has the advantage of high temperature control precision.

Description

Technical Field

[0001] This invention belongs to the field of printing equipment technology, and relates to an intelligent feeding and temperature control system and control method for a modular FDM 3D printing equipment. Background Technology

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a basis to stack materials layer by layer into an object according to a program. It generally uses a moving print head to melt and extrude thermoplastic filaments at high temperatures. The extruded molten material cools down and solidifies, bonding together to form a solid. After stacking layer by layer, a physical object with a stable shape is finally formed. Temperature control in 3D printing is relatively critical, directly affecting print quality, efficiency, and equipment lifespan. In actual operation, temperature control is needed to ensure that the material is in a molten state, avoiding nozzle clogging or premature solidification, thereby ensuring interlayer bonding and overall structural integrity. However, excessively high temperatures can cause material to fray, deform, or burn, while excessively low temperatures can easily cause delamination and surface roughness, affecting printing accuracy. Therefore, effective temperature control methods are urgently needed. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a temperature control system and method that offers precise temperature control and solves these problems.

[0004] The objective of this invention can be achieved through the following technical solution: an intelligent feeding and temperature control system and control method for a modular FDM 3D printing equipment, comprising a printing body with a worktable, a nozzle unit disposed within the printing body for printing material output, and an extrusion unit connected to and cooperating with the nozzle unit. The extrusion unit delivers material to the nozzle unit and extrudes it through the nozzle unit. The worktable is located directly below the nozzle unit. The printing body also includes a control unit connected to it for controlling the operation of the printing body, and a moving unit connected to it for controlling the axial reciprocating movement of the nozzle unit. The nozzle unit includes an assembly plate and a nozzle structure disposed on and connected to the assembly plate. The assembly plate is connected to a connecting unit... The extrusion unit, connected to the moving unit, includes a heat source. The number of moving units is at least three, and each moving unit includes an output motor, upper and lower seats, each with a pulley structure, a belt that cooperates with the pulley structure of the upper and lower seats, and a movable block disposed on the belt. The connecting unit includes two movable rods connected to the printing body, a movable seat connected to the two movable rods and also connected to the movable block, a fixed seat disposed on and connected to the assembly plate, and two connecting rods connecting the movable seat and the fixed seat. The temperature control system of the printing body includes a heat source temperature sensor and a nozzle temperature sensor, and the heat source temperature sensor and the nozzle temperature sensor are communicatively connected to the control unit. The heat source temperature sensor is used to sense the temperature of the extrusion unit, record its data, and transmit the data to the control unit; The nozzle temperature sensor is used to sense the temperature of the nozzle structure, record the data, and transmit the data to the control unit. The lower end face of the assembly plate is provided with an adjustment unit connected thereto and used to adjust the external temperature of the nozzle structure. The adjustment unit includes an electric heating box with a delivery pipe and connected to the printing body, an air outlet connected to the delivery pipe and connected to the assembly plate, and a temperature sensor 1 provided on the assembly plate for reading the air delivery temperature. The temperature sensor 1 is communicatively connected to the control unit. The electric heating box is also communicatively connected to the control unit. The electric heating box is provided with an electric heating wire structure and an electric heating temperature sensor. A heat-insulating component is provided between the assembly plate and the worktable, connecting to and cooperating with the adjustment unit to maintain the temperature of the worktable during processing. This heat-insulating component includes a movable unit connected to the worktable and a moving unit connected to both the assembly plate and the movable unit. The movable unit includes an upper plate, a lower plate, and a corrugated sleeve. The lower plate is disposed on and connected to the worktable and is hollow. The two ends of the corrugated sleeve are connected to the lower plate and the upper plate, respectively. The upper plate is connected to corresponding movable rods via several connecting units (II), and is also hollow. Each connecting unit (II) contains... The moving unit includes a movable seat 2 connected to the movable rod and two connecting rods 2 connecting the movable seat 2 to the upper plate. The moving unit includes a lower movable seat disposed on the upper plate and movably connected thereto, and an upper movable seat disposed on the lower movable seat and movably connected thereto. Both the upper and lower movable seats are provided with cavities. The upper plate is provided with protective units on both sides of the lower movable seat, which are connected to and cooperate with the lower movable seat and seal the cavities of the upper plate. The lower movable seat is also provided with protective units at both ends of the upper movable seat, which are connected to and cooperate with the upper movable seat and seal the cavities of the lower movable seat. The aforementioned electric heating temperature sensor is used to sense the temperature of the electric heating box, record its data, and transmit the data to the control unit; The temperature sensor is used to sense the temperature outside the nozzle structure, record the data, and transmit the data to the control unit. The aforementioned control unit is used to store and record data from the heat source temperature sensor, nozzle temperature sensor, electric heating temperature sensor, and temperature sensor 1, and to read the data and determine the temperature. When the printhead sensor temperature is too high, the heat source is reduced to bring it into the allowable range; or when the printhead sensor temperature is too low, the heat source is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printer stops and manual inspection and repair are performed. When the temperature of temperature sensor 1 is too high, the temperature of the heating box is reduced to bring it into the allowable range. When the temperature of temperature sensor 1 is too low, the temperature of the heating box is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printing body 1 stops, so that the temperature at the worktable after material output can be maintained between 40 degrees and 100 degrees. The temperature control data is set according to actual needs.

[0005] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, the electric heating box is equipped with a fan connected to it for air supply.

[0006] In the aforementioned intelligent feeding and temperature control system and control method for modular FDM 3D printing equipment, the control unit includes a circuit board, a display screen, and an input key structure.

[0007] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, a mounting plate frame is provided on the lower end face of the assembly plate and connected thereto. The mounting plate frame has bent edges extending to the nozzle structure on both side walls, and mounting holes for air outlets are provided on the wall surface of the bent edges at the nozzle structure. An inclined plate is provided on the lower end face of the mounting plate frame and connected thereto. A fan for air supply is also provided on the mounting plate frame, and air supply holes are provided on the mounting plate frame to facilitate air supply. The airflow from the air outlet is directed through the fan to the nozzle structure and then externally. Temperature sensors are used to read the temperature of the flowing airflow. Two adjustment units may be used.

[0008] In the intelligent feeding and temperature control system and control method of the above-mentioned modular FDM 3D printing equipment, the upper movable seat is connected to the above-mentioned folded edge part through a cavity.

[0009] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, the protective unit includes several telescopic joint covers, and the inner diameter of each telescopic joint cover increases progressively from the outside to the inside. Two adjacent telescopic joints have a snap-fit ​​structure for limiting movement. The upper plate and the lower movable seat are provided with baffles connected to and also connected to the corresponding protective unit at their respective locations, causing the protective unit to extend and retract synchronously with the movement of the lower or upper movable seat. The upper plate and the lower movable seat are each provided with a lead screw unit connected to and facilitating the movement of the corresponding lower and upper movable seats. The lead screw unit assists in the movement of the lower and upper movable seats, thereby not affecting the work of the assembly plate. The lead screw unit includes a slide rail, a slider, a lead screw, a nut seat, a coupling, a lead screw seat, and an output motor.

[0010] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, a temperature sensor two is connected to the worktable and used to detect the temperature inside the insulation component. Temperature sensor two may have a detection error with temperature sensor one, with the error range being between 0.5 degrees and 1.5 degrees. The aforementioned fan sends hot air to the nozzle structure, and part of the airflow enters the insulation component, thereby maintaining the temperature at the worktable, reducing temperature disturbance after material discharge, and thus maintaining interlayer interface characteristics and adhesion.

[0011] Compared with existing technologies, the intelligent feeding and temperature control system and control method of this modular FDM 3D printing equipment ensures that the extrusion temperature of the extrusion unit is within the same range through the temperature control system, thereby preventing melting and other phenomena. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the intelligent feeding and temperature control system and control method of this modular FDM 3D printing equipment.

[0013] Figure 2 This is a top view of the insulation component in the intelligent feeding and temperature control system and control method of this modular FDM 3D printing equipment.

[0014] Figure 3 This is a side view of the insulation component in the intelligent feeding and temperature control system and control method of this modular FDM 3D printing equipment.

[0015] In the diagram, 1. Printing body; 3. Moving unit; 4. Assembly plate; 5. Nozzle structure; 6. Air outlet; 7. Mounting frame; 8. Folded edge; 9. Fan; 10. Upper plate; 11. Lower plate; 12. Corrugated sleeve; 13. Lower movable seat; 14. Upper movable seat; 15. Reduction cover. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, the intelligent feeding and temperature control system and control method of this modular FDM 3D printing equipment includes a printing body 1 with a worktable, a nozzle unit disposed within the printing body 1 for printing material output, and an extrusion unit connected to the printing body 1 and cooperating with the nozzle unit. The extrusion unit delivers material to the nozzle unit and extrudes it through the nozzle unit. The worktable is located directly below the nozzle unit. The printing body 1 also includes a control unit connected to it for controlling the operation of the printing body 1, and a moving unit 3 connected to it for controlling the axial reciprocating movement of the nozzle unit. The nozzle unit includes an assembly plate 4 and a nozzle structure 5 disposed on and connected to the assembly plate 4. The assembly plate 4 is connected via... Unit 1 is connected to moving unit 3. The extrusion unit includes a heat source. The number of moving units 3 is at least three. Each moving unit 3 includes an output motor, upper and lower seats with pulley structures, belts that cooperate with the pulley structures of the upper and lower seats, and movable blocks set on the belts. Connecting unit 1 includes two movable rods connected to the printing body 1, a movable seat 1 connected to the two movable rods and also connected to the movable blocks, a fixed seat set on and connected to the assembly plate 4, and two connecting rods connecting the movable seat 1 and the fixed seat. The temperature control system of the printing body 1 includes a heat source temperature sensor and a nozzle temperature sensor, and the heat source temperature sensor and the nozzle temperature sensor are communicatively connected to the control unit. The heat source temperature sensor is used to sense the temperature of the extrusion unit, record its data, and transmit the data to the control unit; The nozzle temperature sensor is used to sense the temperature of the nozzle structure 5, record its data, and transmit the data to the control unit; The lower end face of the assembly plate 4 is provided with an adjustment unit connected thereto and used to adjust the external temperature of the nozzle structure 5. The adjustment unit includes an electric heating box with a delivery pipe and connected to the printing body 1, an air outlet 6 connected to the delivery pipe and connected to the assembly plate 4, and a temperature sensor 1 provided on the assembly plate 4 for reading the air delivery temperature. The temperature sensor 1 is communicatively connected to the control unit. The electric heating box is also communicatively connected to the control unit. The electric heating box is provided with an electric heating wire structure and an electric heating temperature sensor. A heat-insulating component is provided between the assembly plate 4 and the worktable, connecting to and cooperating with the adjustment unit, and used to maintain the temperature of the worktable during processing. This heat-insulating component includes a movable unit connected to the worktable and a moving unit connected to both the assembly plate 4 and the movable unit. The movable unit includes an upper plate 10, a lower plate 11, and a corrugated sleeve 12. The lower plate 11 is disposed on and connected to the worktable and is hollow. The two ends of the corrugated sleeve 12 are connected to the lower plate 11 and the upper plate 10, respectively. The upper plate 10 is connected to corresponding movable rods via several connecting units (II), and is also hollow. Each connecting unit (II) includes a movable unit connected to the movable unit. The moving unit includes a movable seat 2 connected by a rod and two connecting rods 2 connecting the movable seat 2 to the upper plate 10. The moving unit includes a lower movable seat 13 disposed on the upper plate 10 and movably connected thereto, and an upper movable seat 14 disposed on the lower movable seat 13 and movably connected thereto. Both the upper movable seat 14 and the lower movable seat 13 are provided with cavities. The upper plate 10 is provided with protective units on both sides of the lower movable seat 13, which are connected to and cooperate with the lower movable seat 13 and seal the cavities of the upper plate 10. The lower movable seat 13 is also provided with protective units at both ends of the upper movable seat 14, which are connected to and cooperate with the upper movable seat 14 and seal the cavities of the lower movable seat 13. The aforementioned electric heating temperature sensor is used to sense the temperature of the electric heating box, record its data, and transmit the data to the control unit; The temperature sensor is used to sense the temperature outside the nozzle structure 5, record the data, and transmit the data to the control unit. The aforementioned control unit is used to store and record data from the heat source temperature sensor, nozzle temperature sensor, electric heating temperature sensor, and temperature sensor 1, and to read the data and determine the temperature. When the printhead sensor temperature is too high, the heat source is reduced to bring it into the allowable range; or when the printhead sensor temperature is too low, the heat source is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printing unit 1 stops for manual inspection and repair. When the temperature of temperature sensor 1 is too high, the temperature of the heating box is reduced to bring it into the allowable range. When the temperature of temperature sensor 1 is too low, the temperature of the heating box is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printing body 1 stops, so that the temperature at the worktable after material output can be maintained between 40 degrees and 100 degrees. The temperature control data is set according to actual needs.

[0018] In the intelligent feeding and temperature control system and control method of the above-mentioned modular FDM 3D printing equipment, the electric heating box is equipped with a fan 9 connected thereto for air supply.

[0019] In the aforementioned intelligent feeding and temperature control system and control method for modular FDM 3D printing equipment, the control unit includes a circuit board, a display screen, and an input key structure.

[0020] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, the lower end face of the assembly plate 4 is provided with a mounting plate frame 7 connected thereto. The two side walls of the mounting plate frame 7 are provided with bent and extended flange portions 8, and the flange portions 8 are provided with mounting holes for the air outlet head 6 on the wall surface of the air outlet head 5. The lower end face of the mounting plate frame 7 is provided with an inclined plate connected thereto and inclined thereto. The mounting plate frame 7 is also provided with a fan 9 connected thereto for air supply, and the mounting plate frame 7 is provided with air supply holes for easy air supply. The airflow from the air outlet head 6 is sent out through the air outlet head 5 by the fan 9, and the temperature of the airflow is read by a temperature sensor. There can be two adjustment units.

[0021] In the intelligent feeding and temperature control system and control method of the above-mentioned modular FDM 3D printing equipment, the upper movable seat 14 is connected to the folded edge part 8 through a cavity.

[0022] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, the protective unit includes several telescopic joint covers 15, and the inner diameter of the several telescopic joint covers 15 increases progressively from the outside to the inside. Two adjacent telescopic joints have a snap-fit ​​structure, which limits the movement. The upper plate 10 and the lower movable seat 13 are provided with baffles connected to and also connected to the corresponding protective unit at the corresponding protective unit, so that the protective unit can extend and retract synchronously with the movement of the lower movable seat 13 or the upper movable seat 14. The upper plate 10 and the lower movable seat 13 are each provided with a lead screw unit connected to them and facilitating the movement of the corresponding lower movable seat 13 and upper movable seat 14. The lead screw unit assists the movement of the lower movable seat 13 and the upper movable seat 14, so as not to affect the operation of the assembly plate 4. The lead screw unit includes a slide rail, a slider, a lead screw, a nut seat, a coupling, a lead screw seat, and an output motor.

[0023] In the aforementioned intelligent feeding and temperature control system and control method of the modular FDM 3D printing equipment, a temperature sensor 2 is connected to the worktable and used to detect the temperature inside the insulation component. The temperature sensor 2 and the temperature sensor 1 may have a detection error, with the error range being between 0.5 degrees and 1.5 degrees. The aforementioned fan 9 delivers hot air to the nozzle structure 5, and part of the airflow enters the insulation component, thereby maintaining the temperature at the worktable, reducing temperature disturbance after material discharge, and thus maintaining interlayer interface characteristics and adhesion.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0025] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A modular FDM 3D printing equipment intelligent feeding and temperature control system and control method, including a printing body (1) with a worktable, a nozzle unit set inside the printing body (1) for printing material output, and an extrusion unit connected to the printing body (1) and cooperating with the nozzle unit. The extrusion unit conveys the material to the nozzle unit and extrudes it through the nozzle unit. The worktable is located directly below the nozzle unit. The printing body (1) is also equipped with a control unit connected to it for controlling the operation of the printing body (1), and the printing body (1) is also equipped with a moving unit (3) connected to it for controlling the axial reciprocating movement of the nozzle unit. The nozzle unit includes an assembly plate (4) and a mounting plate (5). The nozzle structure (5) is mounted on and connected to the mounting plate (4), and the mounting plate (4) is connected to the moving unit (3) via a connecting unit 1. The extrusion unit includes a heat source. The number of the moving units (3) is at least three, and the moving unit (3) includes an output motor, upper and lower seats, each with a pulley structure, a belt that cooperates with the pulley structure of the upper and lower seats, and a movable block disposed on the belt. The connecting unit 1 includes two movable rods connected to the printing body (1), a movable seat 1 connected to the two movable rods and also connected to the movable block, a fixed seat disposed on and connected to the mounting plate (4), and two connecting rods 1 that connect the movable seat 1 and the fixed seat. The characteristic of the unit is that... The temperature control system of the printing body (1) includes a heat source temperature sensor and a printhead temperature sensor, and the heat source temperature sensor and the printhead temperature sensor are connected in communication with the control unit. The heat source temperature sensor is used to sense the temperature of the extrusion unit, record its data, and transmit the data to the control unit; The nozzle temperature sensor is used to sense the temperature of the nozzle structure (5), record its data, and transmit the data to the control unit; The lower end face of the mounting plate (4) is provided with an adjustment unit connected thereto and used to adjust the external temperature of the nozzle structure (5). The adjustment unit includes an electric heating box with a delivery pipe connected to the printing body (1), an air outlet (6) connected to the delivery pipe and connected to the mounting plate (4), and a temperature sensor 1 set on the mounting plate (4) for reading the air delivery temperature. The temperature sensor 1 is connected in communication with the control unit. The electric heating box is also connected in communication with the control unit. The electric heating box is provided with an electric heating wire structure and an electric heating temperature sensor. A heat-insulating component is provided between the mounting plate (4) and the worktable, which is connected to and cooperates with the adjustment unit to maintain the temperature of the worktable during processing. The heat-insulating component includes a movable unit connected to the worktable and a moving unit connected to the mounting plate (4) and also connected to the movable unit. The movable unit includes an upper plate (10), a lower plate (11), and a corrugated sleeve (12). The lower plate (11) is set on and connected to the worktable. The lower plate (11) is hollow. The two ends of the corrugated sleeve (12) are connected to the lower plate (11) and the upper plate (10) respectively. The upper plate (10) is connected to the corresponding movable rod through several connecting units II. The upper plate (10) is also hollow. The connecting unit II includes a component connected to the movable rod. The movable seat 2 is connected to the upper plate (10) and two connecting rods 2 are used to connect the movable seat 2 to the upper plate (10). The moving unit includes a lower movable seat (13) disposed on the upper plate (10) and movably connected thereto, and an upper movable seat (14) disposed on the lower movable seat (13) and movably connected thereto. Both the upper movable seat (14) and the lower movable seat (13) are provided with cavities. The upper plate (10) is provided with protective units on both sides of the lower movable seat (13) that are connected to it, cooperate with the lower movable seat (13), and seal the cavity of the upper plate (10). The lower movable seat (13) is also provided with protective units at both ends of the upper movable seat (14) that are connected to it, cooperate with the upper movable seat (14), and are used to seal the cavity of the lower movable seat (13). The aforementioned electric heating temperature sensor is used to sense the temperature of the electric heating box, record its data, and transmit the data to the control unit; The temperature sensor is used to sense the temperature outside the nozzle structure (5), record its data, and transmit the data to the control unit; The aforementioned control unit is used to store and record data from the heat source temperature sensor, nozzle temperature sensor, electric heating temperature sensor, and temperature sensor 1, and to read the data and determine the temperature. When the nozzle sensor temperature is too high, the heat source is reduced to bring it into the allowable range, or when the nozzle sensor temperature is too low, the heat source is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printing body (1) stops and manual inspection and maintenance are performed. When the temperature of temperature sensor 1 is too high, the temperature of the heating box is reduced to bring it into the allowable range. When the temperature of temperature sensor 1 is too low, the temperature of the heating box is increased to bring it into the allowable range. When the adjustment exceeds the allowable range, the printing body (1) stops, so that the temperature at the workbench after material discharge can be maintained at 40 degrees to 100 degrees. The temperature control data is set according to actual needs.

2. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 1, characterized in that, The electric heating box is equipped with a fan (9) connected to it for air supply.

3. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 1, characterized in that, The control unit includes a circuit board, a display screen, and an input key structure.

4. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 1, characterized in that, The mounting plate (4) is provided with a mounting bracket (7) connected to it on its lower end surface. The mounting bracket (7) is provided with bent and extended folded edges (8) on both sides of its side walls. The folded edges (8) are provided with mounting holes for the air outlet (6) on the wall surface of the air outlet (5). The mounting bracket (7) is provided with an inclined plate connected to it and inclined. The mounting bracket (7) is also provided with a fan (9) connected to it and used for air supply. The mounting bracket (7) is provided with an air supply hole for easy air supply. The airflow from the air outlet (6) is sent out through the air outlet (5) by the fan (9). The temperature of the airflow is read by a temperature sensor. There can be two adjustment units.

5. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 4, characterized in that, The upper movable seat (14) is connected to the folded edge (8) through a cavity.

6. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 1, characterized in that, The protective unit includes several telescopic joint covers (15), and the inner diameter of the several telescopic joint covers (15) increases from the outside to the inside. Two adjacent telescopic joints have a snap-fit ​​structure, which limits the movement. The upper plate (10) and the lower movable seat (13) are provided with baffles connected to the corresponding protective unit, so that the protective unit can move synchronously with the movement of the lower movable seat (13) or the upper movable seat (14). The upper plate (10) and the lower movable seat (13) are each provided with a screw unit connected to them and facilitating the movement of the corresponding lower movable seat (13) and the upper movable seat (14). The screw unit assists the movement of the lower movable seat (13) and the upper movable seat (14) so ​​as not to affect the work of the assembly plate (4). The screw unit includes a slide rail, a slider, a screw, a nut seat, a coupling, a screw seat and an output motor.

7. The intelligent feeding and temperature control system and control method for the modular FDM 3D printing equipment according to claim 2, characterized in that, The workbench is equipped with a temperature sensor 2 connected to it and used to detect the temperature inside the insulation component. The fan (9) sends hot air to the nozzle structure (5), and part of the airflow enters the insulation component, thereby maintaining the temperature at the workbench and reducing temperature disturbance after discharge, thereby maintaining the interlayer interface characteristics and adhesion.

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