WO2017067134A1

WO2017067134A1 - Internet-of-things-based 3d printer having closed-loop control function

Info

Publication number: WO2017067134A1
Application number: PCT/CN2016/077047
Authority: WO
Inventors: 张萍
Original assignee: 张萍
Priority date: 2015-10-22
Filing date: 2016-03-22
Publication date: 2017-04-27
Also published as: CN105216323A

Abstract

An Internet-of-Things-based 3D printer having a closed-loop control function comprises an intelligent communication terminal (1) and a 3D printer wirelessly connected to each other. The 3D printer comprises a displacement adjusting mechanism, a printing nozzle and a working platform (11), wherein the displacement adjusting mechanism is drivingly connected to the printing nozzle, and the displacement adjusting mechanism comprises two displacement adjusting components. The Internet-of-Things-based 3D printer having the closed-loop control function enables an operator to remotely adjust and control the 3D printer in real-time through the wirelessly connected intelligent communication terminal (1) and the 3D printer. A displacement sensor (7) measures the position of the printing nozzle accurately and cooperates with the displacement adjusting mechanism to form a closed-loop control, thus improving the displacement accuracy of the 3D printer. A temperature sensor (20) monitors the working temperature of a heating device (9) in real-time and cooperates with a heating control module (18) to form a close-loop control, thus improving the temperature accuracy of the 3D printer.

Description

A 3D printer with closed-loop control based on the Internet of Things

Technical field

The invention relates to a 3D printer with closed-loop control function based on the Internet of Things.

Background technique

With the continuous improvement of the level of modern science and technology, people's lives have undergone earth-shaking changes, and some new technologies have emerged.

3D printing is one of the emerging technologies. Due to the short time of 3D printing technology, many aspects have not been perfected, which affects the printing effect of 3D printers and reduces its practicability.

Mainly reflected in the control accuracy of the 3D printer's nozzle, because 3D printing requires high displacement accuracy of printing, many 3D printers currently use open-loop displacement control, which can not meet the requirements. Not only that, but temperature control of the nozzle is also an aspect that needs to be perfected.

Summary of the invention

The technical problem to be solved by the present invention is to provide a closed-loop control based on the Internet of Things, which can realize remote monitoring and high accuracy of displacement control and temperature control, in order to overcome the shortcomings of the prior art displacement control and temperature control accuracy. Functional 3D printer.

The technical solution adopted by the present invention to solve the technical problem thereof is: a 3D printer with closed-loop control function based on the Internet of Things, comprising a wirelessly connected intelligent communication terminal and a 3D printer, the 3D printer including a displacement adjustment mechanism, a print nozzle, and a worktable, the displacement adjusting mechanism is connected to the printing nozzle;

The displacement adjustment mechanism includes two displacement adjustment components, the displacement adjustment components are located on both sides of the print head and are symmetric about a central axis of the print head;

The print head includes a guide sleeve, two squeeze bars disposed above the guide sleeve, a heating device disposed under the guide sleeve, and a nozzle disposed under the heating device, and the outer side of the guide sleeve is provided with a plurality of Evenly distributed displacement sensor;

The guiding sleeve is provided with a central control device, which comprises a central control system, a wireless communication module connected with the central control system, a motor driving module, an extrusion control module, a displacement measuring module, a temperature measuring module, and a heating control The module and the working power module are electrically connected to the extrusion control module, the displacement sensor is electrically connected to the displacement measuring module, and the heating device is electrically connected to the heating control module.

Specifically, the displacement adjustment assembly includes a horizontally disposed conveyor belt, two displacement adjustment units located below the conveyor belt, the displacement adjustment unit being symmetrical about a central axis of the print head, the displacement adjustment unit including a first connecting rod, and a second a connecting rod and a driving motor, the first connecting rod is disposed under the conveyor belt, one end of the first connecting rod is fixedly connected with the conveyor belt, and the other end of the first connecting rod is fixedly connected with the second connecting rod, The drive motor is disposed on the print head and drives a second connecting rod, and the drive motor is electrically connected to the motor drive module.

Specifically, the vertical cross section of the second connecting rod is L-shaped.

Specifically, the smart communication terminal is a smart phone.

Specifically, in order to improve the heating effect, the heating device is a resistive heating wire.

Specifically, in order to improve the accuracy of the displacement measurement, the displacement sensor is a photoelectric displacement sensor.

Specifically, in order to improve the temperature control accuracy, a temperature sensor is provided in the heating device, and the temperature sensor is electrically connected to the temperature measuring module.

Specifically, a battery is disposed in the guiding sleeve, and the battery is electrically connected to the working power module.

Specifically, in order to increase the continuous operation capability of the device, the battery is a lithium battery.

The invention has the beneficial effects that the 3D printer with closed-loop control function based on the Internet of Things realizes the remote real-time regulation of the 3D printer by the staff through the wirelessly connected intelligent communication terminal and the 3D printer, and simultaneously passes the displacement sensor to the printing nozzle. Position for accurate measurement, and displacement adjustment machine The structure is combined to form a closed-loop control, which improves the displacement accuracy of the 3D printer. Moreover, the temperature of the heating device is monitored in real time by the temperature sensor, and then combined with the heating control module to form a closed-loop control, which improves the temperature accuracy of the 3D printer. Sex.

DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a schematic structural view of a 3D printer with closed-loop control function based on the Internet of Things according to the present invention;

2 is a schematic structural diagram of a 3D printer with closed-loop control function based on the Internet of Things according to the present invention;

3 is a system structural diagram of a 3D printer with closed-loop control function based on the Internet of Things of the present invention;

In the figure: 1. Intelligent communication terminal, 2. Conveyor belt, 3. First connecting rod, 4. Second connecting rod, 5. Driving motor, 6. Squeeze stick, 7. Displacement sensor, 8. Guide sleeve, 9. Heating device, 10. Nozzle, 11. Workbench, 12. Central control system, 13. Wireless communication module, 14. Motor drive module, 15. Squeeze control module, 16. Displacement measurement module, 17. Temperature measurement module, 18 Heating control module, 19. working power module, 20. temperature sensor, 21. battery.

detailed description

The invention will now be described in further detail with reference to the drawings. The drawings are simplified schematic diagrams, and only the basic structure of the present invention is illustrated in a schematic manner, and thus only the configurations related to the present invention are shown.

As shown in FIG. 1 to FIG. 3, a 3D printer with closed-loop control function based on the Internet of Things includes a wireless communication intelligent communication terminal 1 and a 3D printer, and the 3D printer includes a displacement adjustment mechanism, a print nozzle, and a work table 11 The displacement adjusting mechanism is connected to the printing nozzle;

The displacement adjustment mechanism includes two displacement adjustment components, and the displacement adjustment component is located at the print spray Both sides of the head are symmetrical about the central axis of the print head;

The print head comprises a guide sleeve 8, two squeeze bars 6 disposed above the guide sleeve 8, a heating device 9 disposed below the guide sleeve 8, and a nozzle 10 disposed below the heating device 9, the guide sleeve 8 a plurality of evenly distributed displacement sensors 7 are arranged on the outer side;

The guiding sleeve 8 is provided with a central control device, and the central control device comprises a central control system 12, a wireless communication module 13 connected to the central control system 12, a motor driving module 14, an extrusion control module 15, and a displacement measuring module 16 The temperature measuring module 17, the heating control module 18, and the working power module 19, the pressing rod 6 is electrically connected to the extrusion control module 15, and the displacement sensor 7 is electrically connected to the displacement measuring module 16, the heating device 9 and The heating control module 18 is electrically connected.

Specifically, the displacement adjusting assembly includes a horizontally disposed conveyor belt 2, two displacement adjusting units located below the conveyor belt 2, the displacement adjusting unit being symmetrical about a central axis of the printing head, and the displacement adjusting unit including the first connecting rod 3 a second connecting rod 4 and a driving motor 5, the first connecting rod 3 is disposed below the conveyor belt 2, one end of the first connecting rod 3 is fixedly connected to the conveyor belt 2, and the other end of the first connecting rod 3 The second connecting rod 4 is fixedly connected, and the driving motor 5 is disposed on the printing head and drives the second connecting rod 4, and the driving motor 5 is electrically connected to the motor driving module 14.

Specifically, the vertical cross section of the second connecting rod 4 is L-shaped.

Specifically, the smart communication terminal 1 is a smart phone.

Specifically, in order to improve the heating effect, the heating device 9 is a resistive heating wire.

Specifically, in order to improve the accuracy of the displacement measurement, the displacement sensor 7 is a photoelectric displacement sensor.

Specifically, in order to improve the temperature control accuracy, the heating device 9 is provided with a temperature sensor 20, which is electrically connected to the temperature measuring module 17.

Specifically, the guide sleeve 8 is provided with a battery 21, and the battery 21 and the working power module 19 electrical connections.

Specifically, in order to improve the continuous operation capability of the device, the battery 21 is a lithium battery.

The working principle of the 3D printer based on the Internet of Things with closed-loop control function is: real-time remote control of the 3D printer by the intelligent communication terminal 1 and 3D printer connected wirelessly; the precision of the printing nozzle is controlled by the displacement adjustment mechanism The displacement is adjusted, and the displacement adjusting component is located on both sides of the printing head and is symmetric about the central axis of the printing head, so that the printing head can be evenly stressed, and the stability of the printing head is improved. In the print head, the material yarn is pressed by two squeeze bars 6 to enter the guide sleeve 8, and then the material yarn is melted by the heating device 9, and finally sprayed through the nozzle 10 for 3D printing.

The working principle of the displacement adjusting mechanism is that the displacement adjusting unit is disposed under the conveyor belt 2, so that the horizontal displacement of the printing head can be adjusted by the conveyor belt 2, and the driving motor 5 controls the horizontal and vertical heights by driving the inclination angle of the second connecting rod 4. The position of the print head is accurately measured by the displacement sensor 7, so that the measurement information is sent to the central control system 12, and the fine adjustment of the drive motor 5 and the conveyor belt 2 is controlled by feedback, thereby further improving the displacement adjustment accuracy of the print head.

The IoT-based 3D printer with closed-loop control function: the wireless communication module 13 is used for wireless connection with the intelligent communication terminal 1; the motor drive module 14 is used for controlling the drive motor 5; and the squeeze control module 15 is used for controlling the squeeze rod The operation of 6; the displacement measurement module 16 is used to analyze the measurement data of the displacement sensor 7; the temperature measurement module 17 is used to analyze the measurement data of the temperature sensor 20; the heating control module 18 is used to control the operation of the heating device 9; The power module 19 ensures the normal operation of the 3D printer and improves the reliability of the 3D printer; the central control system 12 is used to control each module and improve the intelligence of the 3D printer.

Compared with the prior art, the IoT-based 3D printer with closed-loop control realizes remote real-time operation of the 3D printer by the intelligent communication terminal 1 and 3D printer connected wirelessly. At the same time, the position of the printing nozzle is accurately measured by the displacement sensor 7, and cooperates with the displacement adjusting mechanism to form a closed loop control, which improves the displacement accuracy of the 3D printer; not only the temperature sensor 20 controls the operating temperature of the heating device 9 The real-time monitoring is combined with the heating control module 18 to form a closed loop control, which improves the temperature accuracy of the 3D printer.

In view of the above-described embodiments of the present invention, various changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and the technical scope thereof must be determined according to the scope of the claims.

Claims

A 3D printer with closed-loop control function based on the Internet of Things, comprising a wireless communication intelligent communication terminal (1) and a 3D printer, the 3D printer comprising a displacement adjustment mechanism, a print nozzle and a work table (11), The displacement adjusting mechanism is connected to the printing nozzle;

The displacement adjustment mechanism includes two displacement adjustment components, the displacement adjustment components are located on both sides of the print head and are symmetric about a central axis of the print head;

The print head includes a guide sleeve (8), two squeeze bars (6) disposed above the guide sleeve (8), a heating device (9) disposed below the guide sleeve (8), and a heating device (9) The lower nozzle (10), the outer side of the guide sleeve (8) is provided with a plurality of evenly distributed displacement sensors (7);

A central control device is provided in the guide sleeve (8), the central control device includes a central control system (12), a wireless communication module (13) connected to the central control system (12), and a motor drive module (14). Extrusion control module (15), displacement measurement module (16), temperature measurement module (17), heating control module (18) and working power supply module (19), the extrusion bar (6) and the extrusion control module ( 15) Electrical connection, the displacement sensor (7) is electrically connected to the displacement measuring module (16), and the heating device (9) is electrically connected to the heating control module (18).
The IoT-based 3D printer with closed-loop control function according to claim 1, wherein the displacement adjustment component comprises a horizontally disposed conveyor belt (2) and two displacement adjustment units located below the conveyor belt (2). The displacement adjusting unit is symmetrical about a central axis of the printing head, the displacement adjusting unit includes a first connecting rod (3), a second connecting rod (4) and a driving motor (5), the first connecting rod (3) Provided below the conveyor belt (2), one end of the first connecting rod (3) is fixedly connected with the conveyor belt (2), and the other end of the first connecting rod (3) is fixedly connected with the second connecting rod (4) The drive motor (5) is disposed on the print head and drives a second connecting rod (4), and the drive motor (5) is electrically connected to the motor drive module (14).
The IoT-based 3D printer with closed loop control function according to claim 1 It is characterized in that the vertical cross section of the second connecting rod (4) is L-shaped.
The IoT-based 3D printer with closed-loop control function according to claim 1, wherein the intelligent communication terminal (1) is a smart phone.
The IoT-based 3D printer with closed-loop control function according to claim 1, characterized in that the heating device (9) is a resistive heating wire.
The IoT-based 3D printer with closed-loop control function according to claim 1, wherein the displacement sensor (7) is a photoelectric displacement sensor.
The IoT-based 3D printer with closed-loop control function according to claim 1, wherein the heating device (9) is provided with a temperature sensor (20), the temperature sensor (20) and a temperature measuring module (17) Electrical connection.
The IoT-based 3D printer with closed-loop control function according to claim 1, wherein the guide sleeve (8) is provided with a battery (21), the battery (21) and the working power module (19). ) Electrical connection.
The IoT-based 3D printer with closed-loop control function according to claim 8, wherein the battery (21) is a lithium battery.